TREA

ROTECH HOLDINGS LIMITED

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Organization

  • Aberdeen, GB
Organizations

Patents Grantslast 30 patents

  • 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 8,522,460
    • Issue date Sep 3, 2013
    • Rotech Holdings Limited
    • Donald Stewart
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Water turbine with bi-symmetric airfoil
    • Patent number 8,115,329
    • Issue date Feb 14, 2012
    • Rotech Holdings Limited
    • David Stuart Thompson
    • F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
  • 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

    Thrust bearing for down-hole tool
    • Patent number 7,104,698
    • Issue date Sep 12, 2006
    • Rotech Holdings, Ltd.
    • Hector Filippus Alexander Van Drentham-Susman
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Downhole tool
    • Patent number 7,073,610
    • Issue date Jul 11, 2006
    • Rotech Holdings Limited
    • Hector Fillipus Alexander Van Drentham Susman
    • E21 - EARTH DRILLING MINING
  • 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

    Propulsion apparatus
    • Patent number 6,837,759
    • Issue date Jan 4, 2005
    • Rotech Holding Limited
    • Hector Filippus Alexander Van-Drentham Susman
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
  • 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

Patents Applicationslast 30 patents

  • Information Patent Application

    UNDERWATER EXCAVATION APPARATUS
    • Publication number 20110056098
    • Publication date Mar 10, 2011
    • ROTECH HOLDINGS LIMITED
    • Donald Stewart
    • 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