Chang-Dau Yan

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Taipei, TW

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Patents Grantslast 30 patents

Information Patent Grant
Free wheel rotary body structure of a bicycle
- Patent number 5,921,363
- Issue date Jul 13, 1999
- Industrial Technology Research Institute
- Chung-Ping Chiang
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Gear shifting sprocket set for bicycle chain wheel
- Patent number 5,876,296
- Issue date Mar 2, 1999
- Industrial Technology Research Institute
- Pai-Hsiang Hsu
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information Patent Grant
Bicycle speed changing apparatus
- Patent number 5,732,593
- Issue date Mar 31, 1998
- Industrial Technology Research Institute
- Yuh-Ming Hwang
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information Patent Grant
Two sprocket tooth trimming methods and the structure thereof for t...
- Patent number 5,409,422
- Issue date Apr 25, 1995
- Industrial Technology Research Institute
- Chan-Hua Feng
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS