Yihong Xu

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Sunnyvale, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Authenticatable graphical bar codes
- Patent number 7,107,453
- Issue date Sep 12, 2006
- Hewlett-Packard Development Company, L.P.
- Jonathan Yen
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Barcode having enhanced visual quality and systems and methods thereof
- Patent number 7,028,902
- Issue date Apr 18, 2006
- Hewlett-Packard Development Company, L.P.
- Yihong Xu
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method and apparatus for partial encryption of content
- Patent number 6,976,166
- Issue date Dec 13, 2005
- Hewlett-Packard Development Company, L.P.
- Cormac Herley
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Method and apparatus for generating and decoding a visually signifi...
- Patent number 6,751,352
- Issue date Jun 15, 2004
- Hewlett-Packard Development Company, L.P.
- Izhak Baharav
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
Method and apparatus for generating and decoding a visually signifi...
- Publication number 20040089727
- Publication date May 13, 2004
- Izhak Baharav
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Barcode having enhanced visual quality and systems and methods thereof
- Publication number 20040065739
- Publication date Apr 8, 2004
- Yihong Xu
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Method and system for displaying a first image as a second image
- Publication number 20040012601
- Publication date Jan 22, 2004
- Henry W. Sang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Method and apparatus for partial encryption of content
- Publication number 20020108035
- Publication date Aug 8, 2002
- Cormac Herley
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Authenticatable graphical bar codes
- Publication number 20010047476
- Publication date Nov 29, 2001
- Jonathan Yen
- G06 - COMPUTING CALCULATING COUNTING