TREA

Rutger Berchem

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  • Gelsenkirchen, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Throttle device, especially for a throttle valve, with throttle cag...
    • Patent number 5,419,371
    • Issue date May 30, 1995
    • Cerpraecis Anwendungen fur Ingenieurkeramik GmbH
    • Rutger Berchem
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Ball valve or cock
    • Patent number 5,353,832
    • Issue date Oct 11, 1994
    • Cerpraecis Anwendungen fur Ingenieurkeramik GmbH
    • Rutger Berchem
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Assembly for the control of pressure and volume flow of a flowable...
    • Patent number 5,271,427
    • Issue date Dec 21, 1993
    • Metalpraecis Berchem - Schaberg Gesellschaft fur Metallformgebung mbH
    • Rutger Berchem
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Ball valve
    • Patent number 5,205,533
    • Issue date Apr 27, 1993
    • Metalpraecis Berchem - Schaberg Gesellschaft fur Metallformgebung mbH
    • Rutger Berchem
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Method of making an implantable joint prosthesis
    • Patent number 5,150,304
    • Issue date Sep 22, 1992
    • Metalpraecis Berchem - Schaberg Gesellschaft fur Metallformgebung mbH
    • Rutger Berchem
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Pipe section, especially for abrasive and/or corrosive material pip...
    • Patent number 5,052,445
    • Issue date Oct 1, 1991
    • Metalpraecis Berchem Schaberg Gesellschaft fur Metalliformgebung mit Beschran...
    • Rutger Berchem
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Joint prosthesis
    • Patent number 5,035,718
    • Issue date Jul 30, 1991
    • Metalpraecis Berchem + Schaberg Gesellschaft fur Metallformgebung mit beschra...
    • Rutger Berchem
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Pipe section, especially for abrasive and/or corrosive material pip...
    • Patent number 4,995,427
    • Issue date Feb 26, 1991
    • Metalpraecis Berchem & Schaberg Gesellschaft fur Metallformgebung mit beschra...
    • Rutger Berchem
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Shutoff and control valve
    • Patent number 4,968,004
    • Issue date Nov 6, 1990
    • Metalpraecis Berchem - Schaberg Gesellschaft fur Metallformgebung mbH
    • Rutger Berchem
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Joint prosthesis
    • Patent number 4,955,912
    • Issue date Sep 11, 1990
    • Metalpraecis Berchem + Schaberg Gesellschaft fur Metallformgebung mit beschra...
    • Rutger Berchem
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Joint prostheses especially hip joint prostheses
    • Patent number 4,946,379
    • Issue date Aug 7, 1990
    • Metalpraecis Berchem & Schaberg Gesellschaft fur Metallformgebung mit beschra...
    • Rutger Berchem
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Flow-setting valve
    • Patent number 4,936,546
    • Issue date Jun 26, 1990
    • Metalpraecis Berchem & Schaberg Gesellschaft fur Metallformgebung mit beschra...
    • Rutger Berchem
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Shutoff and flow-control valve
    • Patent number 4,932,432
    • Issue date Jun 12, 1990
    • Metalpraecis Berchem + Schaberg Gesellschaft fur Metallformgebung mit beschra...
    • Rutger Berchem
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Piston blank for a forged piston
    • Patent number 4,910,093
    • Issue date Mar 20, 1990
    • Berchem & Schaberg GmbH
    • Rutger Berchem
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Three-way valve
    • Patent number 4,838,312
    • Issue date Jun 13, 1989
    • Metallpraecis Berchem+Schaberg Gesellschaft Fur Metallformgebung m.b.H.
    • Rutger Berchem
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Ball valve
    • Patent number 4,815,704
    • Issue date Mar 28, 1989
    • Metallpraecis Berchem & Schaberg Gesellschaft fur Metallformgebung m.b.H.
    • Rutger Berchem
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Connector pipe segment
    • Patent number 4,804,207
    • Issue date Feb 14, 1989
    • Metallpraecis Berchem
    • Rutger Berchem
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Ball valve with a ceramic valve ball and ceramic seat rings
    • Patent number 4,795,133
    • Issue date Jan 3, 1989
    • B + S Metalpraecis Gesellschaft fur Metallformgebung m.b.H.
    • Rutger Berchem
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Ball cock with sinter ceramic valve seat and valve ball
    • Patent number 4,771,803
    • Issue date Sep 20, 1988
    • B+S Metallpraecis Gesellschaft fur Metallformgsbung m.b.H.
    • Rutger Berchem
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Concrete reinforcing element and method of making a concrete reinfo...
    • Patent number 4,769,886
    • Issue date Sep 13, 1988
    • Berchem & Schaberg GmbH
    • Rutger Berchem
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Excavator tooth assembly for earth moving equipment
    • Patent number 4,744,158
    • Issue date May 17, 1988
    • Berchem & Schaberg GmbH
    • Rutger Berchem
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Method of making a machine part for abrasive applications
    • Patent number 4,716,643
    • Issue date Jan 5, 1988
    • Berchem & Schaberg GmbH
    • Rutger Berchem
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Excavator tooth for earth moving equipment
    • Patent number 4,712,321
    • Issue date Dec 15, 1987
    • Berchem & Schaberg GmbH
    • Rutger Berchem
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Rotating cutter head
    • Patent number 4,711,504
    • Issue date Dec 8, 1987
    • Berchem & Schaberg GmbH
    • Rutger Berchem
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Replaceable tooth for a digging and breaking tool
    • Patent number 4,711,503
    • Issue date Dec 8, 1987
    • Berchem & Schaberg GmbH
    • Rutger Berchem
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Excavator tooth
    • Patent number 4,676,014
    • Issue date Jun 30, 1987
    • Berchem & Schaberg GmbH
    • Rutger Berchem
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Method of making a one-piece piston for an internal-combustion engine
    • Patent number 4,662,047
    • Issue date May 5, 1987
    • Berchem & Schaberg GmbH
    • Rutger Berchem
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method of making a low-alloy forging
    • Patent number 4,644,776
    • Issue date Feb 24, 1987
    • Berchem & Schaberg GmbH
    • Rutger Berchem
    • C21 - METALLURGY OF IRON
  • Information Patent Grant

    Forged steel grinding element for ball milling
    • Patent number 4,634,062
    • Issue date Jan 6, 1987
    • Berchem & Schaberg GmbH
    • Rutger Berchem
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Method of making a composite forged-metal article
    • Patent number 4,591,089
    • Issue date May 27, 1986
    • Berchem & Schbaerg GmbH
    • Rutger Berchem
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR