TREA

Kenneth Roderick Stewart

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  • Scotland, GB
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Patents Grantslast 30 patents

  • Information Patent Grant

    Underwater excavation apparatus
    • Patent number 12,110,653
    • Issue date Oct 8, 2024
    • Rotech Group Limited
    • Kenneth Roderick Stewart
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Underwater excavation apparatus
    • Patent number 11,821,164
    • Issue date Nov 21, 2023
    • Rotech Holdings Limited
    • Kenneth Roderick Stewart
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Underwater excavation apparatus
    • Patent number 11,649,607
    • Issue date May 16, 2023
    • Rotech Holdings Limited
    • Kenneth Roderick Stewart
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Underwater excavation apparatus
    • Patent number 8,893,408
    • Issue date Nov 25, 2014
    • Rotech Limited
    • Hector Filippus Alexander Van Drentham Susman
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Underwater excavation apparatus
    • Patent number 8,800,176
    • Issue date Aug 12, 2014
    • Rotech Limited
    • Kenneth Roderick Stewart
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Power generator and turbine unit
    • Patent number 7,944,073
    • Issue date May 17, 2011
    • Rotech Holdings Limited
    • Hector Fillipus Alexander Van Drentham Susman
    • F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
  • Information Patent Grant

    Power generator and turbine unit
    • Patent number 7,768,145
    • Issue date Aug 3, 2010
    • Rotech Holdings Limited
    • Hector Fillipus Alexander Van Drentham Susman
    • F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
  • Information Patent Grant

    Downhole pump assembly and method of recovering well fluids
    • Patent number 7,686,075
    • Issue date Mar 30, 2010
    • Rotech Holdings Limited
    • Kenneth Roderick Stewart
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Speed governor
    • Patent number 6,854,953
    • Issue date Feb 15, 2005
    • Rotech Holdings, Limited
    • Hector F. A. Van Drentham-Susman
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Window cutting tool for well casing
    • Patent number 6,581,690
    • Issue date Jun 24, 2003
    • Rotech Holdings, Limited
    • Hector F. A. Van Drentham-Susman
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Turbine for down-hole drilling
    • Patent number 6,527,513
    • Issue date Mar 4, 2003
    • Rotech Holdings Limited
    • Hector F.A. Van Drentham-Susman
    • F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
  • Information Patent Grant

    Underwater excavation apparatus
    • Patent number 6,430,848
    • Issue date Aug 13, 2002
    • Rotech Holdings Limited
    • Hector Filippus Alexander Van Drentham Susman
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Underwater mining apparatus
    • Patent number 6,178,670
    • Issue date Jan 30, 2001
    • Rotech Holdings Limited
    • Hector Fillipus Alexander Van Drentham Susman
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Device for creating a local water flow
    • Patent number 6,053,663
    • Issue date Apr 25, 2000
    • Jacob Jan Dikken
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Fluid driven motors
    • Patent number 5,833,444
    • Issue date Nov 10, 1998
    • Gary L. Harris
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

  • Information Patent Application

    UNDERWATER EXCAVATION APPARATUS
    • Publication number 20230138350
    • Publication date May 4, 2023
    • Rotech Group Limited
    • Kenneth Roderick Stewart
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    UNDERWATER EXCAVATION APPARATUS
    • Publication number 20230045315
    • Publication date Feb 9, 2023
    • Rotech Group Limited
    • Kenneth Roderick Stewart
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    IMPROVEMENTS IN AND RELATING TO UNDERWATER EXCAVATION APPARATUS
    • Publication number 20200407940
    • Publication date Dec 31, 2020
    • Rotech Group Limited
    • Kenneth Roderick Stewart
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    Improved Turbine
    • Publication number 20160102499
    • Publication date Apr 14, 2016
    • Kenneth Roderick Stewart
    • F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
  • Information Patent Application

    APPARATUS FOR SEPARATING FLUIDS AND ASSOCIATED METHODS
    • Publication number 20140190900
    • Publication date Jul 10, 2014
    • Rotech Group Limited
    • Kenneth Roderick Stewart
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    UNDERWATER EXCAVATION APPARATUS
    • Publication number 20110099859
    • Publication date May 5, 2011
    • Kenneth Roderick Stewart
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    POWER GENERATOR AND TURBINE UNIT
    • Publication number 20100148513
    • Publication date Jun 17, 2010
    • Hector Filippus Alexander Van Drentham Susman
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    Underwater Excavation Apparatus
    • Publication number 20100043256
    • Publication date Feb 25, 2010
    • ROTECH HOLDINGS LIMITED
    • Hector Filippus Alexander Van Drentham Susman
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    POWER GENERATOR AND TURBINE UNIT
    • Publication number 20090179425
    • Publication date Jul 16, 2009
    • Rotech Holdings Limited
    • Hector Fillipus Alexander Van Drentham Susman
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    Downhole pump assembly and method of recovering well fluids
    • Publication number 20050011649
    • Publication date Jan 20, 2005
    • Kenneth Roderick Stewart
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Power generator and turbine unit
    • Publication number 20050001432
    • Publication date Jan 6, 2005
    • Hector Fillipus Alexander Van Drentham Susman
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    Expandable downhole tool
    • Publication number 20040112587
    • Publication date Jun 17, 2004
    • Hector Filippus Alexander Van Drentham Susman
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Fluid machine
    • Publication number 20040037710
    • Publication date Feb 26, 2004
    • Kenneth Roderick Stewart
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Speed governor
    • Publication number 20030029308
    • Publication date Feb 13, 2003
    • Hector F. A. Van Drentham-Susman
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Guide apparatus
    • Publication number 20020144815
    • Publication date Oct 10, 2002
    • Hector F.A. Van Drentham-Susman
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Guide device
    • Publication number 20020070021
    • Publication date Jun 13, 2002
    • Hector F.A. Van Drentham-Susman
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    GUIDE DEVICE
    • Publication number 20010011591
    • Publication date Aug 9, 2001
    • HECTOR F. A. VAN-DRENTHAM SUSMAN
    • E21 - EARTH DRILLING MINING