Un-Chol Oh

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Suwon-city, KR

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Patents Grantslast 30 patents

Information Patent Grant
Triodic rectifier switch
- Patent number 6,670,649
- Issue date Dec 30, 2003
- Samsung SDI Co., Ltd.
- Choong-Hoon Yi
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS

Patents Applicationslast 30 patents

Information Patent Application
Triodic rectifier switch
- Publication number 20020080637
- Publication date Jun 27, 2002
- Choong-Hoon Yi
- G02 - OPTICS