Choong-Hoon Yi

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Seoul-city, KR

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Patents Grantslast 30 patents

Information Patent Grant
Triodic rectifier switch
- Patent number 6,791,522
- Issue date Sep 14, 2004
- Samsung SDI Co., Ltd.
- Choong-Hoon Yi
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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
ORGANIC ELECTRO LUMINESCENT DISPLAY AND MANUFACTURING METHOD THEREOF
- Publication number 20070166873
- Publication date Jul 19, 2007
- Choong Hoon Yi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Organic electro luminescent display and manufacturing method thereof
- Publication number 20040160175
- Publication date Aug 19, 2004
- Choong Hoon Yi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Triodic rectifier switch
- Publication number 20020080637
- Publication date Jun 27, 2002
- Choong-Hoon Yi
- G02 - OPTICS
Information Patent Application
Triodic rectifier switch
- Publication number 20020063683
- Publication date May 30, 2002
- Choong-Hoon Yi
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS