Siu Yu

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Hong Kong, CN

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Patents Grantslast 30 patents

Information Patent Grant
Rimless spectacles
- Patent number 7,658,492
- Issue date Feb 9, 2010
- Yu Siu
- G02 - OPTICS
Information Patent Grant
Multi-purpose spectacle frame set
- Patent number 7,658,491
- Issue date Feb 9, 2010
- Yu Siu
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
DISPLAY INTERFACE ADJUSTING METHOD AND SYSTEM
- Publication number 20130050266
- Publication date Feb 28, 2013
- Perception Digital Limited
- Kin Ping NG
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Multi-purpose spectacle frame set
- Publication number 20090027614
- Publication date Jan 29, 2009
- Yu Siu
- G02 - OPTICS
Information Patent Application
Rimless spectacles
- Publication number 20080198323
- Publication date Aug 21, 2008
- Yu SIU
- G02 - OPTICS
Information Patent Application
Spectacles set with magnetic clips and detachable magnetic auxiliar...
- Publication number 20060290881
- Publication date Dec 28, 2006
- Siu Yu
- G02 - OPTICS