TREA

David F. Christofferson

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  • Sussex, WI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Adjustable trimming assembly
    • Patent number 9,056,401
    • Issue date Jun 16, 2015
    • Quad/Graphics, Inc.
    • William T. Graushar
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    In-line shell processing
    • Patent number 8,528,890
    • Issue date Sep 10, 2013
    • Quad/Graphics, Inc.
    • William T. Graushar
    • B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
  • Information Patent Grant

    Adjustable trimming assembly
    • Patent number 8,291,799
    • Issue date Oct 23, 2012
    • Quad/Graphics, Inc.
    • William T. Graushar
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Cover applier system
    • Patent number 8,083,455
    • Issue date Dec 27, 2011
    • Quad/Tech, Inc.
    • William T. Graushar
    • B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
  • Information Patent Grant

    Resonator use in the print field
    • Patent number 7,506,813
    • Issue date Mar 24, 2009
    • Quad/Graphics, Inc.
    • David F. Christofferson
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Hopper loader apparatus and method
    • Patent number 7,048,111
    • Issue date May 23, 2006
    • Quad/Tech, Inc.
    • David F. Christofferson
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Signature hopper loader apparatus and method
    • Patent number 6,427,999
    • Issue date Aug 6, 2002
    • Quad/Tech, Inc.
    • David F. Christofferson
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Gripper conveyor with preliminary ink jet
    • Patent number 6,019,047
    • Issue date Feb 1, 2000
    • Quad/Tech, Inc.
    • Lawrence S. Klaas
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Gripper conveyor with preliminary ink jet
    • Patent number 5,819,663
    • Issue date Oct 13, 1998
    • Quad/Tech, Inc.
    • Lawrence S. Klaas
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL

Patents Applicationslast 30 patents

  • Information Patent Application

    ADJUSTABLE TRIMMING ASSEMBLY
    • Publication number 20150273714
    • Publication date Oct 1, 2015
    • Quad/Graphics, Inc.
    • William T. Graushar
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING
  • Information Patent Application

    IN-LINE SHELL PROCESSING
    • Publication number 20140001694
    • Publication date Jan 2, 2014
    • Quad/Graphics, Inc.
    • William T. Graushar
    • B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
  • Information Patent Application

    IN-LINE SHELL PROCESSING
    • Publication number 20110037214
    • Publication date Feb 17, 2011
    • Quad/Graphics, Inc.
    • William T. Graushar
    • B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
  • Information Patent Application

    ADJUSTABLE TRIMMING ASSEMBLY
    • Publication number 20100269651
    • Publication date Oct 28, 2010
    • Quad/Graphics, Inc.
    • William T. Graushar
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING
  • Information Patent Application

    ADJUSTABLE TRIMMING ASSEMBLY
    • Publication number 20090000440
    • Publication date Jan 1, 2009
    • Quad/Graphics, Inc.
    • William T. Graushar
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING
  • Information Patent Application

    COVER APPLIER SYSTEM
    • Publication number 20080199276
    • Publication date Aug 21, 2008
    • William T. Graushar
    • B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
  • Information Patent Application

    Resonator use in the print field
    • Publication number 20060196936
    • Publication date Sep 7, 2006
    • Quad/Graphics, Inc.
    • David F. Christofferson
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    Hopper loader apparatus and method
    • Publication number 20020088690
    • Publication date Jul 11, 2002
    • Quad/Tech, Inc.
    • David F. Christofferson
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL