Jong Yeol Yang

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Jung-ku, KR

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Patents Grantslast 30 patents

Information Patent Grant
Dry-etching gas for semiconductor process and preparation method th...
- Patent number 7,319,174
- Issue date Jan 15, 2008
- Ulsan Chemical Co., Ltd.
- Hae Seok Ji
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
DRY-ETCHING GAS FOR SEMICONDUCTOR PROCESS
- Publication number 20080203353
- Publication date Aug 28, 2008
- ULSAN CHEMICAL Co., Ltd.
- Hae Seok JI
- C07 - ORGANIC CHEMISTRY
Information Patent Application
DRY-ETCHING GAS FOR SEMICONDUCTOR PROCESS AND PREPARATION METHOD TH...
- Publication number 20070265478
- Publication date Nov 15, 2007
- ULSAN CHEMICAL Co., Ltd.
- Hae Seok JI
- C07 - ORGANIC CHEMISTRY