Chia-Hu Chang

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Tappan, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Ultraviolet light absorbing ketones of 2-(2-hydroxyphenyl) benzotri...
- Patent number 8,163,934
- Issue date Apr 24, 2012
- Chia-Hu Chang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Ultraviolet light absorbing ketones of 2-(2-hydroxyphenyl) benzotri...
- Patent number 7,847,103
- Issue date Dec 7, 2010
- Chia-Hu Chang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE

Patents Applicationslast 30 patents

Information Patent Application
Ultraviolet light absorbing compounds based on benzyl substituted 2...
- Publication number 20120329885
- Publication date Dec 27, 2012
- Chia-Hu Chang
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
Ultraviolet light absorbing ketones of 2-(2-hydroxyhenyl) benzotria...
- Publication number 20110038816
- Publication date Feb 17, 2011
- Chia-Hu Chang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Ultraviolet light absorbing ketones of 2-(2-Hydroxyphenyl) benzotri...
- Publication number 20100086500
- Publication date Apr 8, 2010
- Chia-Hu Chang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...