Se-Jong Ko

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Kyonggi-do, KR

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for cleaning the edges of wafers
- Patent number 7,270,136
- Issue date Sep 18, 2007
- K. C. Tech Co., Ltd.
- Se-Jong Ko
- B24 - GRINDING POLISHING
Information Patent Grant
Nozzle for injecting sublimable solid particles entrained in gas fo...
- Patent number 7,008,306
- Issue date Mar 7, 2006
- K.C. Tech Co., Ltd.
- Cheol-Nam Yoon
- B24 - GRINDING POLISHING

Patents Applicationslast 30 patents

Information Patent Application
Nozzle for injecting sublimable solid particles entrained in gas fo...
- Publication number 20050277370
- Publication date Dec 15, 2005
- Cheol-Nam Yoon
- B24 - GRINDING POLISHING
Information Patent Application
Apparatus for cleaning the edges of wafers
- Publication number 20040035450
- Publication date Feb 26, 2004
- Se-Jong Ko
- B08 - CLEANING