Charen Yu

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Taipei, TW

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Patents Grantslast 30 patents

Information Patent Grant
Lamp having a readable disk with an electro-luminescent element
- Patent number 6,601,964
- Issue date Aug 5, 2003
- Ritek Corporation
- Shaw-Jong Wang
- F21 - LIGHTING
Information Patent Grant
Case with vibration-activated light emitting indication apparatus
- Patent number 6,561,671
- Issue date May 13, 2003
- Ritek Corporation
- Shaw-Jong Wang
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
Vibration-activated light emitting indication apparatus
- Publication number 20020085375
- Publication date Jul 4, 2002
- Ritek Corporation
- Shaw-Jong Wang
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Application
Dimmer light utilizing light-emitting disk
- Publication number 20020067606
- Publication date Jun 6, 2002
- Ritex Corporation.
- Shaw-Jong Wang
- F21 - LIGHTING