Tianfu Li

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Troy, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
Device for holding a wheel against rotation on an inclined surface
- Patent number 6,899,212
- Issue date May 31, 2005
- Tianfu Li
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Tilt-in-place wheelchair having adjustable wheelbase width
- Patent number 6,467,788
- Issue date Oct 22, 2002
- Tianfu Li
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Transmission mechanism
- Patent number 6,450,054
- Issue date Sep 17, 2002
- Tianfu Li
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Beverage container having a self-contained pop-up drinking straw or...
- Patent number 6,431,382
- Issue date Aug 13, 2002
- Tianfu Li
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Stair climbing walker
- Patent number 6,145,524
- Issue date Nov 14, 2000
- Tianfu Li
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Inclinometer
- Patent number 6,073,356
- Issue date Jun 13, 2000
- Tianfu Li
- G01 - MEASURING TESTING
Information Patent Grant
Exerciser
- Patent number 5,851,167
- Issue date Dec 22, 1998
- Tianfu Li
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Stairs climbing walker
- Patent number 5,787,913
- Issue date Aug 4, 1998
- Tianfu Li
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE

Patents Applicationslast 30 patents

Information Patent Application
Wheeled vehicle
- Publication number 20120248731
- Publication date Oct 4, 2012
- Tianfu Li
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information Patent Application
Balanced ball vehicle
- Publication number 20080283311
- Publication date Nov 20, 2008
- Tianfu Li
- B60 - VEHICLES IN GENERAL
Information Patent Application
Folding walker having latching mechanism
- Publication number 20040031511
- Publication date Feb 19, 2004
- Tianfu Li
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
Device for holding a wheel against rotation on an inclined surface
- Publication number 20040026209
- Publication date Feb 12, 2004
- Tianfu Li
- B60 - VEHICLES IN GENERAL
Information Patent Application
Multiple purpose device to assist physically disabled persons
- Publication number 20030151232
- Publication date Aug 14, 2003
- Tianfu Li
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
Flight vehicle having internal lift surfaces
- Publication number 20020109043
- Publication date Aug 15, 2002
- Tianfu Li
- B64 - AIRCRAFT AVIATION COSMONAUTICS
Information Patent Application
TRANSMISSION MECHANISM
- Publication number 20020091033
- Publication date Jul 11, 2002
- Tianfu Li
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...