Hang Jae Yu

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Sungnam-si, KR

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Patents Grantslast 30 patents

Information Patent Grant
Lighting apparatus capable of protecting eyesight
- Patent number 7,898,189
- Issue date Mar 1, 2011
- Hang Jae Yu
- F21 - LIGHTING
Information Patent Grant
Adapter device for compact fluorescent lamp having eyesight protect...
- Patent number 7,775,677
- Issue date Aug 17, 2010
- Hang Jae Yu
- F21 - LIGHTING

Patents Applicationslast 30 patents

Information Patent Application
Adapter device for compact fluorescent lamp having eyesight protect...
- Publication number 20090176394
- Publication date Jul 9, 2009
- Hang Jae Yu
- F21 - LIGHTING