Dong J. Choo

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Dongdaemun-ku, Seoul, 131, KR

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Patents Grantslast 30 patents

Information Patent Grant
3,4-dihydroquinazoline derivatives
- Patent number 8,168,646
- Issue date May 1, 2012
- Dongwoo Syntech Co., Ltd.
- Jae Yeol Lee
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Hydrophilic oxygen permeable polymers
- Patent number 5,534,605
- Issue date Jul 9, 1996
- Bausch & Lomb Incorporated
- Ronald E. Bambury
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Hydrophilic oxygen permeable polymers
- Patent number 5,357,013
- Issue date Oct 18, 1994
- Bausch & Lomb Incorporated
- Ronald E. Bambury
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Hydrophilic oxygen permeable polymers
- Patent number 4,910,277
- Issue date Mar 20, 1990
- Ronald E. Bambury
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Ultraviolet blocking agents for contact lenses
- Patent number 4,719,248
- Issue date Jan 12, 1988
- Bausch & Lomb Incorporated
- Ronald E. Bambury
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
3,4-DIHYDROQUINAZOLINE DERIVATIVES
- Publication number 20100120803
- Publication date May 13, 2010
- DONGWOO SYNTECH CO., LTD.
- Jae Yeol Lee
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE