Ya-Chen Chao

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Ta-Li City, TW

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Patents Grantslast 30 patents

Information Patent Grant
Front wheel stabilizing device for an electric motor-driven wheeled...
- Patent number 7,293,620
- Issue date Nov 13, 2007
- Ya-Chen Chao
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Wheelchair armrest assembly
- Patent number 5,799,964
- Issue date Sep 1, 1998
- Ya-chen Chao
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE

Patents Applicationslast 30 patents

Information Patent Application
Front wheel stabilizing device for an electric motor-driven wheeled...
- Publication number 20070114079
- Publication date May 24, 2007
- Ya-Chen Chao
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
Wheelchair with an anti-wobbling roller
- Publication number 20030107197
- Publication date Jun 12, 2003
- Ya-Chen Chao
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
Wheeled chair with a seat locking unit
- Publication number 20030062753
- Publication date Apr 3, 2003
- Ya-Chen Chao
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE