Liu Yin-Feng

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Taipei, TW

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Patents Grantslast 30 patents

Information Patent Grant
Variably threaded screw
- Patent number 8,894,339
- Issue date Nov 25, 2014
- Simpson Strong-Tie Company, Inc.
- Liu Yin-Feng
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Variably threaded screw
- Patent number 7,402,016
- Issue date Jul 22, 2008
- Simpson Strong-Tie Company, Inc.
- Liu Yin-Feng
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
Variably Threaded Screw
- Publication number 20080273939
- Publication date Nov 6, 2008
- Simpson Strong-Tie Company, Inc.
- Liu Yin-Feng
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Variably threaded screw
- Publication number 20060269380
- Publication date Nov 30, 2006
- Liu Yin-Feng
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...