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Zhao-Zhi Yu
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Webster, NY, US
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last 30 patents
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Patent Grant
Apparatus and method for minimizing the halo effect in an electrost...
Patent number
6,292,645
Issue date
Sep 18, 2001
Xerox Corporation
Zhao-zhi Yu
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Hybrid scavengeless development system
Patent number
6,026,264
Issue date
Feb 15, 2000
Xerox Corporation
Lam F. Wong
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
High slope DC/AC combination charging device
Patent number
5,991,579
Issue date
Nov 23, 1999
Xerox Corporation
Zhao-zhi Yu
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Split recharge method and apparatus for color image formation
Patent number
5,600,430
Issue date
Feb 4, 1997
Xerox Corporation
Jeffrey J. Folkins
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Method and apparatus for reducing residual toner voltage
Patent number
5,581,330
Issue date
Dec 3, 1996
Xerox Corporation
Kenneth W. Pietrowski
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Single positive recharge method and apparatus for color image forma...
Patent number
5,579,100
Issue date
Nov 26, 1996
Xerox Corporation
Zhao-Zhi Yu
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
High slope AC charging device having groups of wires
Patent number
5,539,501
Issue date
Jul 23, 1996
Xerox Corporation
Zhao-Zhi Yu
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Biasable member having low surface energy
Patent number
5,303,014
Issue date
Apr 12, 1994
Xerox Corporation
Zhao-Zhi Yu
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY