TREA

Colleen A. Helbig

Follow

Person

  • Penfield, NY, US
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Photoreceptor charge transport layer composition
    • Patent number 7,267,917
    • Issue date Sep 11, 2007
    • Xerox Corporation
    • Yuhua Tong
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Photoreceptor charge transport layer composition
    • Patent number 7,192,678
    • Issue date Mar 20, 2007
    • Xerox Corporation
    • Yuhua Tong
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Grant

    Imaging member
    • Patent number 7,052,813
    • Issue date May 30, 2006
    • Xerox Corporation
    • Yuhua Tong
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Grant

    Imaging member
    • Patent number 7,022,445
    • Issue date Apr 4, 2006
    • Xerox Corporation
    • Yuhua Tong
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Grant

    Dual charge transport layer and photoconductive imaging member incl...
    • Patent number 7,018,756
    • Issue date Mar 28, 2006
    • Xerox Corporation
    • Damodar M. Pai
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Imaging member
    • Patent number 6,933,089
    • Issue date Aug 23, 2005
    • Xerox Corporation
    • Anthony M. Horgan
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Imaging member
    • Patent number 6,780,554
    • Issue date Aug 24, 2004
    • Xerox Corporation
    • Yuhua Tong
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Grant

    Electrophotographic imaging members
    • Patent number 6,645,686
    • Issue date Nov 11, 2003
    • Xerox Corporation
    • Min-Hong Fu
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Multilayered electrophotographic imaging member
    • Patent number 5,686,215
    • Issue date Nov 11, 1997
    • Xerox Corporation
    • John A. Bergfjord
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

  • Information Patent Application

    Photoreceptor charge transport layer composition
    • Publication number 20060063080
    • Publication date Mar 23, 2006
    • XEROX Corporation
    • Yuhua Tong
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    Extrusion coating system
    • Publication number 20060024445
    • Publication date Feb 2, 2006
    • Xerox Corporation.
    • Alfred H. Willnow
    • B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
  • Information Patent Application

    Photoreceptor charge transport layer composition
    • Publication number 20060014089
    • Publication date Jan 19, 2006
    • XEROX Corporation
    • Yuhua Tong
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    Imaging member
    • Publication number 20050271958
    • Publication date Dec 8, 2005
    • Xerox Corporation.
    • Yuhua Tong
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    Dual charge transport layer and photoconductive imaging member incl...
    • Publication number 20050053854
    • Publication date Mar 10, 2005
    • Xerox Corporation.
    • Damodar M. Pai
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    Imaging member
    • Publication number 20040115547
    • Publication date Jun 17, 2004
    • Xerox Corporation.
    • Yuhua Tong
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    Imaging member
    • Publication number 20040115544
    • Publication date Jun 17, 2004
    • Xerox Corporation.
    • Min-Hong Fu
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    Imaging members
    • Publication number 20040115545
    • Publication date Jun 17, 2004
    • Xerox Corporation.
    • Anthony M. Horgan
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    Imaging member
    • Publication number 20040115546
    • Publication date Jun 17, 2004
    • Xerox Corporation.
    • Yuhua Tong
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY