Wook CHANG

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Seongnam-si, KR

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Patents Grantslast 30 patents

Information Patent Grant
Etching solution capable of suppressing particle appearance
- Patent number 10,167,425
- Issue date Jan 1, 2019
- OCI Company Ltd
- Hoseong Yoo
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method of purifying yellow phosphorus
- Patent number 9,845,241
- Issue date Dec 19, 2017
- OCI Company Ltd
- Seung-Hyun Han
- C01 - INORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
TiN ETCHANT COMPOSITION AND METHOD OF FORMING SEMICONDUCTOR DEVICE
- Publication number 20240336839
- Publication date Oct 10, 2024
- SAMSUNG ELECTRONICS CO,. LTD.
- GAYOUNG SONG
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
ETCHING SOLUTION CAPABLE OF SUPPRESSING PARTICLE APPEARANCE
- Publication number 20170321121
- Publication date Nov 9, 2017
- OCI COMPANY LTD.
- Hoseong Yoo
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
METHOD OF PURIFYING YELLOW PHOSPHORUS
- Publication number 20160185599
- Publication date Jun 30, 2016
- OCI COMPANY LTD.
- Seung-Hyun HAN
- C01 - INORGANIC CHEMISTRY
Information Patent Application
METHOD FOR REMOVING METAL IONS IN PHOSPHORIC ACID SOLUTION
- Publication number 20160016799
- Publication date Jan 21, 2016
- OCI COMPANY LTD.
- Seung-Hyun HAN
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL