Zhao-Zhi Yu

Person

Webster, NY, US

People

Patents Grantslast 30 patents

Information 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

Zhao-Zhi Yu

Person

Patents Grantslast 30 patents

Apparatus and method for minimizing the halo effect in an electrost...

Hybrid scavengeless development system

High slope DC/AC combination charging device

Split recharge method and apparatus for color image formation

Method and apparatus for reducing residual toner voltage

Single positive recharge method and apparatus for color image forma...

High slope AC charging device having groups of wires

Biasable member having low surface energy