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Robert J. Hutchinson

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  • Prairieville, LA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Apparatus and methods for separating slurried material
    • Patent number 7,045,068
    • Issue date May 16, 2006
    • Walker-Dawson Interests, Inc.
    • Robert J. Hutchinson
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Apparatus and methods for separating slurried material
    • Patent number 6,911,145
    • Issue date Jun 28, 2005
    • Walker-Dawson Interests, Inc.
    • Robert J. Hutchinson
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Excavation system employing a jet pump
    • Patent number 6,860,042
    • Issue date Mar 1, 2005
    • Walker-Dawson Interests, Inc.
    • Robert J. Hutchinson
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Jet pump with recirculating motive fluid
    • Patent number 6,817,837
    • Issue date Nov 16, 2004
    • Walker-Dawson Interest, Inc.
    • Robert J. Hutchinson
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Jet pumps and methods employing the same
    • Patent number 6,450,775
    • Issue date Sep 17, 2002
    • Walker-Dawson Interests, Inc.
    • Robert J. Hutchinson
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Jet pump for transfer of material
    • Patent number 6,322,327
    • Issue date Nov 27, 2001
    • Walker-Dawson Interests, Inc.
    • Richard F. Dawson
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents