Yeon Tak Choi

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Suncheon-si, KR

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Patents Grantslast 30 patents

Information Patent Grant
Optical resin composition and optical lens using same
- Patent number 10,227,442
- Issue date Mar 12, 2019
- KS LABORATORIES CO., LTD.
- Keun Sik Kim
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Method for preparing amicarbazone
- Patent number 9,332,762
- Issue date May 10, 2016
- KS LABORATORIES CO., LTD.
- Keun Sik Kim
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for preparing amino-triazolinone
- Patent number 8,957,221
- Issue date Feb 17, 2015
- KS Laboratories Co., Ltd.
- Keun Sik Kim
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL RESIN COMPOSITION AND OPTICAL LENS USING SAME
- Publication number 20170198083
- Publication date Jul 13, 2017
- KS LABORATORIES CO., LTD.
- Keun Sik KIM
- G02 - OPTICS
Information Patent Application
METHOD FOR PREPARING AMICARBAZONE
- Publication number 20150336906
- Publication date Nov 26, 2015
- KS LABORATORIES CO., LTD.
- Keun Sik KIM
- C07 - ORGANIC CHEMISTRY
Information Patent Application
METHOD FOR PREPARING AMINO-TRIAZOLINONE
- Publication number 20140163239
- Publication date Jun 12, 2014
- KS LABORATORIES CO., LTD.
- Keun Sik Kim
- C07 - ORGANIC CHEMISTRY