Alexander C. Chan

Person

Buffalo Grove, IL, US

People

Patents Grantslast 30 patents

Information Patent Grant
Method and composition for removing semi-permanent color from human...
- Patent number 5,651,960
- Issue date Jul 29, 1997
- Helene Curtis, Inc.
- Alexander C. Chan
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Oxidative hair coloring composition and process for dyeing human ke...
- Patent number 5,540,738
- Issue date Jul 30, 1996
- Alexander C. Chan
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Direct dyes having a quaternary center with a long aliphatic chain
- Patent number 5,486,629
- Issue date Jan 23, 1996
- Clairol, Inc.
- Alexander Chan
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Erasable hair dyeing process
- Patent number 5,474,578
- Issue date Dec 12, 1995
- Clairol, Inc.
- Alexander C. Chan
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Synthesis of 2-methyl-1-naphthol
- Patent number 5,420,362
- Issue date May 30, 1995
- Clairol, Inc.
- Mu-Ill Lim
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Use of metal salts and chelates together with chlorites as oxidants...
- Patent number 5,368,610
- Issue date Nov 29, 1994
- Clairol Incorporated
- Alexander Chan
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Direct dyes having a quaternary center with a long aliphatic chain
- Patent number 5,360,930
- Issue date Nov 1, 1994
- Clairol Inc.
- Alexander Chan
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Hair dye compositions and methods utilizing 2-substituted-1-naphtho...
- Patent number 5,344,463
- Issue date Sep 6, 1994
- Clairol, Inc.
- Alexander Chan
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Aminoan thraquinone dyes having a quaternary center with a long ali...
- Patent number 5,314,505
- Issue date May 24, 1994
- Clairol, Inc.
- Alexander Chan
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Nitrophenylenediamine dyes having a quaternary center with a long a...
- Patent number 5,298,029
- Issue date Mar 29, 1994
- Clairol Incorporated
- Alexander Chan
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Quarternized monoalkylenediamine nitrobenzene compounds and their u...
- Patent number 5,256,823
- Issue date Oct 26, 1993
- Clairol Incorporated
- Alexander Chan
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
M-phenylenediamine coupler and oxidative dye compositions containin...
- Patent number 5,199,955
- Issue date Apr 6, 1993
- Clairol Inc.
- Yuh-Guo Pan
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Hair dye coupler compounds
- Patent number 5,183,941
- Issue date Feb 2, 1993
- Clairol Incorporated
- Yuh-Guo Pan
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Direct dyes having a quaternary center with a long aliphatic chain
- Patent number 5,169,403
- Issue date Dec 8, 1992
- Clairol, Inc.
- Alexander Chan
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Quaternized monoalkylenediamine nitrobenzene compounds and their us...
- Patent number 5,135,543
- Issue date Aug 4, 1992
- Clairol Incorporated
- Alexander Chan
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Dye couplers
- Patent number 5,073,173
- Issue date Dec 17, 1991
- Clairol Incorporated
- Yuh-Guo Pan
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Skin coloring compositions containing indoles and quaternary ammoni...
- Patent number 5,049,381
- Issue date Sep 17, 1991
- Clairol Incorporated
- Thomas M. Schultz
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Skin coloring and sunscreening compositions containing indoles and...
- Patent number 5,037,640
- Issue date Aug 6, 1991
- Clairol Incorporated
- Thomas M. Schultz
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Processes for coloring and/or conditioning hair
- Patent number 4,975,092
- Issue date Dec 4, 1990
- Clairol Incorporated
- Alexander C. Chan
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Skin tanning composition and method
- Patent number 4,968,497
- Issue date Nov 6, 1990
- Clairol Incorporated
- Leszek Wolfram
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE

Alexander C. Chan

Person

Patents Grantslast 30 patents

Method and composition for removing semi-permanent color from human...

Oxidative hair coloring composition and process for dyeing human ke...

Direct dyes having a quaternary center with a long aliphatic chain

Erasable hair dyeing process

Synthesis of 2-methyl-1-naphthol

Use of metal salts and chelates together with chlorites as oxidants...

Direct dyes having a quaternary center with a long aliphatic chain

Hair dye compositions and methods utilizing 2-substituted-1-naphtho...

Aminoan thraquinone dyes having a quaternary center with a long ali...

Nitrophenylenediamine dyes having a quaternary center with a long a...

Quarternized monoalkylenediamine nitrobenzene compounds and their u...

M-phenylenediamine coupler and oxidative dye compositions containin...

Hair dye coupler compounds

Direct dyes having a quaternary center with a long aliphatic chain

Quaternized monoalkylenediamine nitrobenzene compounds and their us...

Dye couplers

Skin coloring compositions containing indoles and quaternary ammoni...

Skin coloring and sunscreening compositions containing indoles and...

Processes for coloring and/or conditioning hair

Skin tanning composition and method