Allan Tsai

Follow

Person

Taipei, TW

People

Patents Grantslast 30 patents

Information Patent Grant
Screw fastener assembly
- Patent number 7,287,452
- Issue date Oct 30, 2007
- Allen Tsai
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
Clamping tool for use in the maintenance of frameless eyeglasses
- Patent number 6,592,219
- Issue date Jul 15, 2003
- Prosben, Inc.
- Allan Tsai
- G02 - OPTICS
Information Patent Grant
Lens cleaning kit
- Patent number 6,145,655
- Issue date Nov 14, 2000
- Allan Tsai
- G02 - OPTICS
Information Patent Grant
Multi-purpose eyeglasses pouch
- Patent number 5,240,105
- Issue date Aug 31, 1993
- Allan Tsai
- G02 - OPTICS
Information Patent Grant
Combined screwdriver and magnifying glass
- Patent number 5,150,261
- Issue date Sep 22, 1992
- Allen Tsai
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
Attachment device
- Patent number 4,937,920
- Issue date Jul 3, 1990
- Allan Tsai
- G02 - OPTICS
Information Patent Grant
Pen-like eyeglass cleaner
- Patent number 4,927,284
- Issue date May 22, 1990
- Allan Tsai
- G02 - OPTICS
Information Patent Grant
Cleaning pen for cleaning spectacle lenses
- Patent number 4,818,134
- Issue date Apr 4, 1989
- Allan Tsai
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Eyeglasses Cleaning Device
- Publication number 20080078045
- Publication date Apr 3, 2008
- Allen TSAI
- G02 - OPTICS
Information Patent Application
Cleansing wipe pack
- Publication number 20070095708
- Publication date May 3, 2007
- Allen Tsai
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Application
Moist eyeglass cleaner
- Publication number 20040026287
- Publication date Feb 12, 2004
- Allan Tsai
- G02 - OPTICS