Labeling system for vial container

Information

  • Patent Grant
  • 6308827
  • Patent Number
    6,308,827
  • Date Filed
    Wednesday, November 24, 1999
    25 years ago
  • Date Issued
    Tuesday, October 30, 2001
    23 years ago
Abstract
The present invention relates to a labeling system on a packaging container designed to transport an object, which may contain a liquid. The packaging container has at least one sealing multi-layer comprising a first water soluble film, an absorbent/adsorbent material, and at least one water soluble layer, the outer layer of the packaging container. The inner layer of the packaging container is the water-soluble film that forms a boundary between a cavity that hold the object and the packaging container. When a liquid leaks from the object while in the packaging container, the liquid passes through the water-soluble film. When the liquid contacts the absorbent/adsorbent material, the absorbent/adsorbent material absorbs or adsorbs, and immobilizes the liquid material. This immobilization prevents the liquid from escaping from the packaging container. The present invention also includes a tamper-evident, water insoluble sleeve on at least a portion of the outer layer which is bondable to the outer layer and receives a first label.
Description




FIELD OF THE INVENTION




The present invention relates to a labeling system used in association with a packaging container to hold or ship an object. And if the object contains a liquid and the liquid leaks from the object, then the package container ensures the liquid does not leak therefrom.




BACKGROUND OF THE INVENTION




Prior attempts to control leaking materials have been disclosed in U.S. Pat. No. 4,749,600 (Inventors: Cullen et al.). Cullen et al. disclose a packet for absorbing and immobilizing a liquid. The packet looks like a sugar packet (See FIG. 3 of the '600 patent) by having an outer layer and inner contents. When the packet is to be used, it is inserted within an outer container, like a Federal Express package. In most instances, the packet falls to the bottom edge, in particular a corner, of the outer container. See Col. 2, lines 46 of the '600 patent. Along with the packet, an inner container of a liquid, like a test-tube of blood (See FIG. 5 of the '600 patent) is inserted into the outer container. According to the '600 patent, the bottom edge of the inner container should contact the packet. Thus, when the blood spills from the inner container, the blood may contact the packet.




If the blood contacts the packet, the blood dissolves the outer layer. The packet has an inner layer of polyvinyl acetate and an outer layer of starch paper or any other liquid-degradable material. The polyvinyl acetate has to be the inner layer in order for the packet to be formed. See col 2, lines 9-11 of the '600 patent.




When the outer layer dissolves, the inner contents are released and form a gel-like substance by absorbing the blood. The inner content is sodium polyacrylate having the formula (C


3


H


3


O


2


Na)


n


. It is obtainable under the trademark WATER LOCK J-550 from Grain Processing Corporation.




A problem with the Cullen et al.'s invention is that the packet is so small that it is possible that the liquid may never contact the packet. For example, if the packet is located at the bottom of the outer container, as Cullen et al. suggest, and the liquid leaks to the top of the outer container, the packet will never immobilize the liquid since the liquid never contacts the packet. Thereby, the liquid spills from the outer container and provides little protection to the handler of the package. These results could be extremely deleterious to the handler. For example, if the liquid is HIV contaminated and that liquid contacts a cut on the handler, that handler could become infected.




Another problem with Cullen et al.'s invention is that it fails to disclose a method to ensure the package and the object, contained within the package, are properly labeled. “Properly labeled” is defined as having a first label on the exterior package container, and a second label on the object, wherein the first and second labels contain at least a certain identifier, like bar code or fingerprint. The certain identifier inhibits the opportunity for contamination of the object and a liquid, if the object holds a liquid, mishandling that object, misidentifying that object, and ensures a proper tracking method of that object. The first label is protected from being damaged from conventional adverse exterior elements, like rain, snow, or moisture, that affect the exterior of the package and a liquid from within the package.




SUMMARY OF THE INVENTION




The present invention relates to a labeling system on a packaging container designed to transport an object, which may contain a liquid. The packaging container has at least one sealing multi-layer comprising a first water soluble film, an absorbent material or adsorbent material (hereinafter referred to as “absorbent/adsorbent material”), and at least one water soluble layer, the outer layer of the packaging container. The inner layer of the packaging container is the water-soluble film that forms a boundary between a cavity that hold the object and the packaging container. When a liquid leaks from the object while in the packaging container, the liquid passes through the water-soluble film. When the liquid contacts the absorbent/adsorbent material, the absorbent/adsorbent material absorbs or adsorbs, and immobilizes the liquid material. This immobilization prevents the liquid from escaping from the packaging container. The present invention also includes a tamper-evident, water insoluble sleeve on at least a portion of the outer layer which is bondable to the outer layer and receives a first label.











BRIEF DESCRIPTION OF THE DRAWINGS





FIG. 1

is a perspective view of a plurality of packaging containers.





FIG. 2

is a cross-sectional view of

FIG. 1

taken along the line


2





2


.





FIGS. 3

to


11


are alternative embodiments of FIG.


2


.





FIG. 12

is a view of

FIG. 1

taken along the line


3





3


.





FIG. 13

shows Section A of FIG.


12


.





FIGS. 14

to


15


are alternative embodiments of FIG.


13


.





FIGS. 16

to


17


are alternative embodiments of FIG.


2


.





FIG. 18

illustrates the labeling system on a representative sample of the packaging container.











DETAILED DESCRIPTION OF THE PRESENT INVENTION




One version of the packaging container


10


for adsorbing or absorbing, and immobilizing a liquid


32


is shown at

FIG. 1

in a roll


9


having a plurality of containers


10


. Each container


10


includes a multi-layer film wherein the outer layer


12


is shown. The outer layer


12


is any suitable material such as paper, cardboard, wood, or plastic, but preferably a water-insoluble material. Examples of some water-insoluble materials that can be used for the outer layer


12


include thermoplastic resin films, laminated films prepared from two or more thermoplastic resin films, and laminated films prepared from a thermoplastic resin film and paper, metallic foil, woven fabric or unwoven fabric. Preferable thermoplastic resins include polymers and copolymers of olefins, such as ethylene, propylene, butene, pentene, hexene, and the like; polymers and copolymers of vinyl compounds such as vinyl chloride, vinylidene chloride, vinylacetate, vinyl alcohol, acrylic ester, methacrylic ester, acrylonitrile, styrene and the like, polymers of diolefins such as butadiene, isoprene, and the like; copolymers of the above-mentioned olefins, or vinyl compounds; polyamides; and polyesters such as polyethylene terephthalate and the like.




The container


10


has at least two sides—a top side


42


and a bottom side


44


. The bottom side


44


is either the same length as the top side


42


, as shown in

FIG. 1

, or longer than the top side


42


, as shown in

FIGS. 14 and 15

, so the bottom side


44


has a flap


40


. The flap


40


is designed to fold over onto a portion of the top side


42


, as shown in

FIGS. 12-13

. The inner layer of the flap


40


contacts the top side


42


by various conventional methods. One method, which is shown in

FIGS. 2-9

, has a conventional sealant material


90


. Such sealant materials


90


include polyvinyl acetate, ethylvinyl acetate or glue. These sealant materials


90


can be film-like as shown in

FIG. 2

or a dot matric coating as shown in FIG.


3


. In either case, these sealant materials


90


adhere to the top side


42


or underside of the topside


77


by conventional sealing processes, such as crimping, adhesive, pressure sealing, or heat sealing to ensure the package


10


is tamper resistant and impact resistant.




Another method to seal the package container


10


, and make it tamper resistant and impact resistant, is merely heat sealing or pressure sealing the edges of the package


10


together with a tab


40


as shown in

FIGS. 14-15

, or without a tab


40


as shown in

FIGS. 16-17

.




The packaging container


10


is used to transport a object(s)


30


which may include liquids or gelatin materials, hereinafter liquid material


32


, from one place to another. The liquid material


32


can be a biological, a radioactive, a pesticide, and/or a chemical agent.




An object


30


, which may contain a liquid


32


. The object


30


is any material, like evidence at a crime scene, or any type of container, like a vial, that can securely hold the liquid material


32


and fit within the container


10


. The object


30


can be a rigid material such as glass, metallic, ceramic, plastic or the like, or a flexible material like a conventional flexible plastic material. When the object


30


is a vial, the vial should be sealable for transportation purposes. An example of the seal includes a cap


36


which holds the liquid


32


sealed within the object


30


. Sometimes, the liquid


32


leaks from the object


30


. When this occurs, the packaging container


10


contains the liquid


32


.




Turning to

FIG. 2

, the container


10


has the outer layer


12


, a cavity


50


to hold the object


30


, an absorbent or adsorbent material


16


, and a first layer of a water-permeable material


14


. The layers


12


and


14


are superimposed upon each other and seal together at the peripheral edges


66


of the container


10


. At the peripheral edges


66


, the layers


12


,


14


are sealed together by conventional methods, such as heat sealing, pressure sealing, crimping, and/or adhesive. Between layers


12


,


14


is the absorbent/adsorbent material


16


. The absorbent/adsorbent material


16


is contained within the two layers


12


,


14


until the liquid permeates through the first layer


14


, which can dissolve.




The first layer


14


is any conventional water permeable material, such as starch paper, polyvinyl acetate, water-soluble synthetic polymer films, water soluble semisynthetic polymer films, and water-soluble natural polymers. Examples of water soluble synthetic polymer films include partially saponified polyvinyl alcohol, polyethers, such as polyethylene oxide and the like, polyvinylpyrrolidone, ethylenically unsaturated acids, such as acrylic acid, methacrylic acid, maleic acid, and polymers formed from their salts thereof.




Examples of water soluble semisynthetic polymer films include cellulose derivatives, such as carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, and starch derivatives such as cyclodextrin. As for the water-soluble natural polymers, those include carrageena, starch, gelatin, and chitin.




Layer


14


can also be conventional non-woven and/or woven materials of plastic, natural products, namely, wool or cotton, or synthetic materials. In this embodiment, the layer


14


positions the absorbent/adsorbent material


16


and allows liquid


32


to penetrate through it.




In any case, liquid


32


passes through layer


14


when liquid


32


contacts it. The absorbent/adsorbent material


16


is then released. When released, the material


16


absorbs or adsorbs, and then immobilizes large volumes of aqueous solutions including dilute alkalis, dilute acids and body fluids. The material can be sodium polyacrylate having the formula (C


3


H


3


O


2


Na)


n


and variations thereof. This material is obtainable under the trademark WATER LOCK J-550 from Grain Processing Corporation. The material


16


can also be ARIDALL 1080 from Aridall, equivalents thereof of ARIDALL 1080 and WATER LOCK J-550, and mixtures thereof with or without the WATER LOCK J-550.




In some instances, it is desirable to add a conventional nullifying agent


18


, such as a biocide or equivalent thereof, to nullify a specific undesirable quality of the liquid


32


. In some instances, it is desirable to mix the absorbent/adsorbent material


16


and nullifying agent


18


together as shown in FIG.


3


.




In another embodiment of the present invention, a second water permeable material


20


is located between the first layer


14


and the outer layer


12


. The second layer


20


is selected from the same group of materials as the first layer


14


. Moreover, the first layer


14


superimposes upon the second layer


20


and the outer layer


12


, wherein each layer


12


,


14


,


20


seals together at the peripheral edges


66


. As shown in

FIG. 4

, the absorbent/adsorbent material


16


and nullifying agent


18


are mixed together between the first and second layers


14


,


20


, or alternatively, either the absorbent/adsorbent material


16


or the nullifying agent


18


are between the first and second layers


14


,


20


.




To ensure safe transport of the liquid


32


, sometimes it is advisable to separate the two materials


16


,


18


. In

FIG. 5

, the nullifying agent


18


is between the first layer


14


and the second layer


16


while the absorbent/adsorbent material


16


is between the second layer


16


and the outer layer


12


. In contrast,

FIG. 6

shows the opposite configuration of FIG.


5


.




In yet another embodiment of the present invention,

FIGS. 7 and 8

illustrate a variation of

FIGS. 5 and 6

respectively. The only difference between these figures is that

FIGS. 7 and 8

both illustrate a third water permeable material


22


. The third layer


22


is selected from the same group of materials as the first layer


14


. Moreover, the first layer


14


superimposes upon the second layer


20


, third layer


22


, and outer layer


12


, wherein each layer


12


,


14


,


22


,


20


seals together at the peripheral edges


66


.




Another embodiment of the present invention is illustrated in FIG.


9


.

FIG. 9

illustrates

FIG. 4

without the water insoluble layer


12


. Obviously, as indicated by

FIG. 9

, alternative embodiments of the present invention also include those embodiments shown in

FIGS. 4-8

without the water insoluble layer


22


.




Likewise,

FIGS. 10 and 11

respectively illustrate embodiments of

FIGS. 2 and 9

without any sealing material


90


. Obviously, as indicated by

FIGS. 10 and 11

, alternative embodiments of the present invention also include those embodiments illustrated in

FIGS. 3-8

.




Turning to

FIG. 12

, packages


10


can be removed from roll


9


in sets or individually, as shown in

FIG. 9

, along perforations


70


. Thereby, the user can select the desired number of packages


10


to be transported.




Turning to

FIGS. 13 and 16

, vials


30


are inserted into cavity


50


, preferably within an air pocket therein to provide further protection. The air pocket can be incorporated within cavity


50


by a conventional blower. The blower pumps the air into the cavity


50


to form the air pocket. The air pocket forms within the cavity


50


only after the package


10


is sealed as shown in

FIGS. 15 and 17

.




Alternatively, the package


10


can have a first and/or second labels


80


,


81


. The labels


80


,


81


have at least a certain identifier


83


, like a bar code, fingerprint, handprint, retinal scan, or DNA fingerprint of the person(s) who gave the object


30


or liquid


32


, obtained the object


30


or liquid


32


, or both. The labels


80


,


81


can have additional information


87


thereon, such as the person who provided the object


30


and/or liquid


32


; who obtained the object


30


and/or liquid


32


; identifies the type of test to be conducted on the object


30


and/or liquid


32


; and/or identifies where the object


30


and/or liquid


32


came from, and when. These labels


80


,


81


can be produced by a printer to print out the additional information and the certain identifier, manually produced, or a combination thereof. The certain identifier can be transferred to the computer through scanners or the conditioned collection techniques. Preferably, the first label


80


is positioned on the outer layer,


12


,


22


, or


20


of the package


10


within a tamper-evident, water insoluble sleeve


84


on at least a portion of the outer layer


12


which is bondable to the outer layer and receives the first label


80


. Preferably, the sleeve


84


has at least one side which superimposes and bonds on the one peripheral edge of the outer layer and inner layer which bonds after the packaging container


10


receives the object


30


. The sleeve


84


then has a cavity


86


that receives the first label


80


. The sleeve


84


protects the first label


80


from conventional adverse exterior elements, like rain, snow or moisture, that affect the outer layer


12


,


22


,


20


and the liquid


32


within the packaging container.




The second label


81


is attached to the object


30


, by conventional means like adhesive, storing, screw, or nail.




Another alternative to the first and second labels


80


,


81


can be a color code system. A particular color on the labels


80


,


81


can identify which test should be conducted on the object


30


and/or liquid


32


. Alternatively, the color can cover the entire outer layer


12


,


22


,


20


, the labels


80


,


81


, the object


30


, all items or just a portion thereof (as shown in FIG.


18


).




In case the absorbent/adsorbent material


16


is activated and absorbs the liquid


32


, the liquid


32


can be extracted from the absorbent/adsorbent material


16


, and the nullifying agent


18


. The extraction can be accomplished by conventional biological processes, for example, osmosis, chemical processes, or mechanical processes, i.e., centrifugation. Thereby, the liquid


32


can be analyzed whether the object


30


is broken or not.




In yet another embodiment of the present invention shown at

FIG. 13

, the package container


10


can be divided into having at least two cavities


50


,


50




a


to hold two objects


30


,


30




a


. The container


10


is divided, not always equally, along edge


34


and perforations


70


. Edge


34


is formed in the same manner as the various layers of container


10


are joined at peripheral edge


66


.




The present invention


10


ensures that if for any reason liquid


32


leaks from object


30


, the liquid


32


will permeate, and dissolve in some instances, at least a portion of the first layer


14


because the first layer


14


, and obviously the absorbent/adsorbent material


16


and/or nullifying agent


18


, completely surrounds the vial


30


. And once the liquid


32


passes through the first layer


14


, the enclosed agent, either


16


and/or


18


, will nullify or absorb the liquid


32


. Thereby, the handler of the packaging container


10


will know that no liquid


32


will accidently leak from it.




While preferred embodiments of the present invention have been disclosed, it will be appreciated that it is not limited thereto but may be otherwise embodied with the scope of the following claims.



Claims
  • 1. A packaging container comprisingat least one sealable multi-layer film having at least a first layer of a water permeable material to form an inner layer of the packaging container and at least one layer of a water insoluble material to form an outer layer of the packaging container, the water insoluble material and the water permeable material are superimposable to each other, the water permeable material allows a liquid to penetrate through the first layer when an object contains the liquid and the liquid leaks within the packaging container; a cavity within the packaging container to hold the object wherein the boundary between the cavity and the packaging container is the is the first water permeable material; an absorbent/adsorbent material between the first water permeable material and the water insoluble material that absorbs or adsorbs and immobilizes the liquid, so the liquid is prevented from leaking from the packaging container; a tamper-evident, water insoluble sleeve on at least a portion of the outer layer which is bondable to the outer layer and receives a first label.
  • 2. The packaging container of claim 1 further comprising a second water permeable material superimposed between the first water permeable material and water insoluble material and bonded at the peripheral edges of each material.
  • 3. The packaging container of claim 2 further comprising a nullifying material for additionally treating the liquid material to nullify a specific undesirable quality thereof, the nullifying material is between the first and second water permeable materials, and the absorbent/adsorbent material is between the second water permeable material and the water insoluble material.
  • 4. The packaging container of claim 2 further comprising a nullifying material for additionally treating the liquid material to nullify a specific undesirable quality thereof, the nullifying material is between the second water permeable material and the water insoluble material, and the absorbent/adsorbent material is between the first and second water permeable materials.
  • 5. The packaging container of claim 2 comprising a third water soluble film superimposed between the second water permeable material and water insoluble material and bonded at the peripheral edges of each material.
  • 6. The packaging container of claim 5 wherein the absorbent/adsorbent material is between a second permeable material and a third permeable material.
  • 7. The packaging container of claim 5 wherein the absorbent/adsorbent material is between the first and second permeable materials.
  • 8. The packaging container of claim 1 further comprising a nullifying material for additionally treating the liquid material to nullify a specific undesirable quality thereof.
  • 9. The packaging container of claim 3 wherein the nullifying material is mixed with the absorbent/adsorbent material.
  • 10. The packaging container of claim 1 wherein the packaging container is tamper-resistant.
  • 11. The packaging container of claim 1 wherein the first label has a certain identifier and information relating to the object.
  • 12. The packaging container of claim 11 wherein a second label has the certain identifier and is attached to the object.
  • 13. The packaging container of claim 12 wherein the first and second labels and the corresponding certain identifier, are generated through a printer.
  • 14. The packaging container of claim 11 wherein the certain identifier is a bar code.
  • 15. The packaging container of claim 11 wherein the certain identifier is a finger print.
  • 16. The packaging containing of claim 11 wherein the certain identifier is a DNA fingerprint.
  • 17. The packaging container of claim 1 wherein at least one peripheral edge of the outer layer and inner layer are bonded after the packaging container receives the object.
  • 18. The packaging container of claim 17 wherein the sleeve has at least one side which superimposes and bonds on at least one peripheral edge of the outer layer and inner layer, and the outer layer and inner layer are bonded after the packaging container receives a material.
  • 19. A method to use a packaging container comprising the following steps:inserting an object, which may contain a liquid, into a packaging container, wherein the packaging container comprises at least one sealable multi-layer film having at least a first layer of a water permeable material to form an inner layer of the packaging container and at least one layer of a water insoluble material to form an outer layer of the packaging container, the water insoluble material and water permeable material are superimposable and bondable to each other at the peripheral edges of each material, the water permeable material allows the liquid to penetrate through the first layer when the material, if the object contains the liquid and the liquid leaks within the packaging container; a cavity within the packaging container to hold the object wherein the boundary between the cavity and the packaging container is the first water permeable material; an absorbent/adsorbent material between the first water permeable material and the water insoluble material that absorbs/adsorbs and immobilizes the liquid, so the liquid is prevented from leaking from the packaging container; and a tamper-evident, water insoluble sleeve on at least a portion of the outer layer which is bondable to the outer layer and receives a first label; and moving the package container from a first position to a second position.
  • 20. The method of claim 19, further comprising the step of extracting the liquid from the absorbent/adsorbent material.
  • 21. The method of claim 20 wherein a second label that has the certain identifier and is attached to the object.
  • 22. The method of claim 20 wherein the certain identifier is a bar code.
  • 23. The method of claim 20 wherein the certain identifier is a DNA fingerprint.
  • 24. The method of claim 20 wherein the certain identifier is a fingerprint.
  • 25. The method of claim 19 wherein the first label has a certain identifier and information relating to the object.
  • 26. A packaging container comprising at least one sealable multi-layer film having at least a first layer of a water permeable material and at least one layer of a water insoluble material, wherein the inner layer of the packaging container is the water permeable material and the outer layer of the packaging container is the water insoluble material, the water insoluble material and water permeable material are superimposed and bonded to each other, the water permeable material allows a liquid to penetrate through the first layer when a liquid material contained in a vial leaks within the packaging container;a second water permeable material superimposed between the first water permeable material and water insoluble material; a cavity within the packaging container to hold the vial wherein the boundary between the cavity and the packaging container is the first water permeable material; and an absorbent material between the first water permeable material and the water insoluble material that absorbs and immobilizes the liquid material, so the liquid material is prevented from leaking from the packaging container.
  • 27. The packaging container of claim 26 further comprising a nullifying material for additionally treating the liquid material to nullify a specific undesirable quality thereof.
  • 28. The packaging container of claim 27 wherein the nullifying material is mixed with the absorbent material.
  • 29. The packaging container of claim 26 further comprising a nullifying material for additionally treating the liquid material to nullify a specific undesirable quality thereof, the nullifying material is between the first and second water permeable materials, and the absorbent material is between the second water permeable material and the water insoluble material.
  • 30. The packaging container of claim 26 further comprising a nullifying material for additionally treating the liquid material to nullify a specific undesirable quality thereof, the nullifying material is between the second water permeable material and the water insoluble material, and the absorbent material is between the first and second water permeable materials.
  • 31. The packaging container of claim 26 comprising a third water soluble film superimposed between the second water permeable material and water insoluble material and bonded at the peripheral edges of each material.
  • 32. The packaging container of claim 31 wherein the absorbent material is between a second permeable material and a third permeable material.
  • 33. The packaging container of claim 31 wherein the absorbent material is between the first and second permeable materials.
  • 34. The packaging container of claim 31 wherein the inner layer of the third water soluble material has a sealant material.
  • 35. The packaging container of claim 26 wherein the container is tamper-resistant.
  • 36. The packaging container of claim 26 wherein the inner layer of the first water permeable material has a sealant material.
  • 37. The packaging container of claim 26 wherein the inner layer of the second water permeable material has a sealant material.
  • 38. A method to use a packaging container, inserting a vial containing a liquid into a packaging container comprising at least one sealable multi-layer film having at least a first layer of a water permeable material and at least one layer of a water insoluble material, wherein the inner layer of the packaging container is the water permeable material and the outer layer of the packaging container is the water insoluble material, the water insoluble material and water permeable material are superimposed and bonded to each other at the peripheral edges of each material, the water permeable material allows a liquid to penetrate through the first layer when a liquid material contained in a vial leaks within the packaging container;a cavity within the packaging container to hold the vial wherein the boundary between the cavity and the packaging container is the first water permeable material; and an absorbent material between the first water permeable material and the water insoluble material that absorbs and immobilizes the liquid material, so the liquid material is prevented from leaking from the packaging container; extracting the liquid from the absorbent material.
PRIORITY OF INVENTION

This application is a continuation-in-part application of U.S. patent application Ser. No. 09/343,901 filed Jun. 30, 1999, (now U.S. Pat. No. 6,161,687), which is a continuation-in-part application of U.S. patent application Ser. No. 09/247,421 filed Feb. 10, 1999 (now U.S. Pat. No. 5,984,087).

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4748069 Cullen May 1988
4853266 Cullen Aug 1989
4861632 Caggiano Aug 1989
4927010 Kannankeril May 1990
5069694 Cullen et al. Dec 1991
5279421 Gouge et al. Jan 1994
5284621 Kaufman Feb 1994
5330047 Gouge et al. Jul 1994
5537313 Pirelli Jul 1996
5691015 Tsukamoto et al. Nov 1997
5820955 Brander Oct 1998
5827586 Yamashita et al. Oct 1998
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5984087 Hacikyan Nov 1999
6161687 Hacikyan Dec 2000
Continuation in Parts (2)
Number Date Country
Parent 09/343901 Jun 1999 US
Child 09/449125 US
Parent 09/247421 Feb 1999 US
Child 09/343901 US