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Stephan J. W. Platzer
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Califon, NJ, US
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last 30 patents
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Patent Grant
Process for the mechanical roughening of the surface of a printing...
Patent number
5,860,184
Issue date
Jan 19, 1999
AGFA-Gevaert A.G.
Stephan J. W. Platzer
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Process for the mechanical roughening of the surface of a printing...
Patent number
5,775,977
Issue date
Jul 7, 1998
AGFA-Gevaert A.G.
Stephan J. W. Platzer
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Solid transfer negative- or positive-working color proofing element
Patent number
5,725,988
Issue date
Mar 10, 1998
Bayer Corporation
Stephan J. W. Platzer
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Process for the production of a lithographic printing plate through...
Patent number
5,705,313
Issue date
Jan 6, 1998
AGFA-Gevaert A.G.
Werner Frass
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Peel-apart process for the production of a colored image and imaged...
Patent number
5,534,373
Issue date
Jul 9, 1996
AGFA-Gevaert A.G.
Stephan J. W. Platzer
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Photosensitive material for the production of a colored image utili...
Patent number
5,529,883
Issue date
Jun 25, 1996
Hoechst Aktiengesellschaft
Stephan J. W. Platzer
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Photosensitive material and method for making color-proofing films
Patent number
5,492,791
Issue date
Feb 20, 1996
Hoechst Aktiengesellschaft
Karin Maerz
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Photopolymerizable material and process for the production of a col...
Patent number
5,374,184
Issue date
Dec 20, 1994
Hoeschst Aktiengesellschaft
Stephan J. W. Platzer
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Photoimaged article having a colored image protected by a transpare...
Patent number
5,258,247
Issue date
Nov 2, 1993
Hoechst Celanese Corporation
Stephan J. W. Platzer
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Solid transfer negative- or positive-working color proofing method
Patent number
5,213,941
Issue date
May 25, 1993
Hoechst Celanese Corporation
Stephan J. W. Platzer
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image transfer to diverse paper stocks
Patent number
5,192,630
Issue date
Mar 9, 1993
Hoechst Celanese Corporation
Stephan J. W. Platzer
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Colored image on a degradable sheet material and method of formation
Patent number
5,183,723
Issue date
Feb 2, 1993
Hoechst Celanese Corporation
Stephan J. W. Platzer
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Negative working, peel developable, single sheet color proofing method
Patent number
5,108,868
Issue date
Apr 28, 1992
Hoechst Celanese Corporation
Stephan J. W. Platzer
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Method for forming a colored image on a degradable sheet material
Patent number
5,100,757
Issue date
Mar 31, 1992
Hoechst Celanese Corporation
Stephan J. W. Platzer
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Color proofing system having a graduated layer of resins with diffe...
Patent number
5,080,996
Issue date
Jan 14, 1992
Hoechst Celanese Corporation
Stephan J. W. Platzer
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Color proofing system having a graduated layer of resins with diffe...
Patent number
5,008,174
Issue date
Apr 16, 1991
Hoechst Celanese Corporation
Stephan J. W. Platzer
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Protected color image on substrate with thermal adhesive and antibl...
Patent number
4,999,266
Issue date
Mar 12, 1991
Hoechst Celanese Corporation
Stephan J. W. Platzer
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Positive working color proofing system comprising polyvinyl acetal/...
Patent number
4,948,693
Issue date
Aug 14, 1990
Hoechst Celanese Corporation
Richard L. Shadrach
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Solid transfer negative- or positive-working color proofing method...
Patent number
4,937,168
Issue date
Jun 26, 1990
Hoechst Celanese Corporation
Stephan J. W. Platzer
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Pigment transfer to photopolymerizable positive-working imaging system
Patent number
4,935,331
Issue date
Jun 19, 1990
Hoechst Celanese Corporation
Stephan J. W. Platzer
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Preparation of receiver sheet materials for peel developable, singl...
Patent number
4,910,120
Issue date
Mar 20, 1990
Hoechst Celanese Corporation
Stephan J. W. Platzer
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Transferrable, thermoplastic, antiblocking/adhesive protecting laye...
Patent number
4,902,594
Issue date
Feb 20, 1990
Hoechst Celanese Corporation
Stephan J. W. Platzer
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Photopolymerizable positive working, peel developable, single sheet...
Patent number
4,895,787
Issue date
Jan 23, 1990
Hoechst Celanese Corporation
Stephan J. W. Platzer
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Negative working color proofing process comprising diazo compound a...
Patent number
4,808,508
Issue date
Feb 28, 1989
Hoechst Celanese Corporation
Stephan J. W. Platzer
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Positive working naphthoquinone diazide color proofing element with...
Patent number
4,772,533
Issue date
Sep 20, 1988
American Hoechst Corporation
Stephan J. W. Platzer
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Apparatus and method for separating adherent films
Patent number
4,752,346
Issue date
Jun 21, 1988
Hoechst Celanese Corporation
Stephan J. W. Platzer
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Negative working diazo color proofing method
Patent number
4,751,166
Issue date
Jun 14, 1988
Hoechst Celanese Corp.
Stephan J. Platzer
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Protective coating for images
Patent number
4,719,169
Issue date
Jan 12, 1988
Hoechst Celanese Corporation
Stephan J. W. Platzer
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Positive working naphthoquinone diazide color proofing transfer pro...
Patent number
4,659,642
Issue date
Apr 21, 1987
American Hoechst Corporation
Stephan J. W. Platzer
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Negative working diazo color proofing method
Patent number
4,650,738
Issue date
Mar 17, 1987
American Hoechst Corporation
Stephan J. W. Platzer
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY