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Rolf Prehn

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  • Wipperfurth, DE
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Patents Grantslast 30 patents

Patents Applicationslast 30 patents

  • Information Patent Application

    BIMETALLIC STATIC GASKET AND METHOD OF CONSTRUCTION THEREOF
    • Publication number 20190085977
    • Publication date Mar 21, 2019
    • TENNECO INC.
    • Thomas W. Swasey
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    BIMETALLIC STATIC GASKET AND METHOD OF CONSTRUCTION THEREOF
    • Publication number 20170082197
    • Publication date Mar 23, 2017
    • Federal-Mogul Corporation
    • THOMAS W. SWASEY
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    METHOD AND DEVICE FOR PRODUCING SEALING RINGS
    • Publication number 20130056936
    • Publication date Mar 7, 2013
    • Rolf Prehn
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    FLAT SEAL
    • Publication number 20120153576
    • Publication date Jun 21, 2012
    • Rolf Prehn
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    METHOD FOR PRODUCING METAL SEALING ELEMENTS
    • Publication number 20120073343
    • Publication date Mar 29, 2012
    • FEDERAL-MOGUL SEALING SYSTEMS GMBH
    • Rolf Prehn
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    METHOD FOR PRODUCING SEALING ELEMENTS
    • Publication number 20120073348
    • Publication date Mar 29, 2012
    • FEDERAL-MOGUL SEALING SYSTEMS GMBH
    • Rolf Prehn
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    METHOD FOR PRODUCING METAL ELEMENTS, IN PARTICULAR SEALING ELEMENTS
    • Publication number 20120070272
    • Publication date Mar 22, 2012
    • FEDERAL-MOGUL SEALING SYSTEMS GMBH
    • Rolf Prehn
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    SEALING ELEMENT FOR SEALING FLANGE SURFACES ON INTERNAL COMBUSTION...
    • Publication number 20120056385
    • Publication date Mar 8, 2012
    • FEDERAL-MOGUL SEALING SYSTEMS GMBH
    • Rolf Prehn
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    SEALING ELEMENT FOR SEALING FLANGE SURFACES IN INTERNAL COMBUSTION...
    • Publication number 20110109049
    • Publication date May 12, 2011
    • Rolf Prehn
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    FLAT SEAL
    • Publication number 20110101623
    • Publication date May 5, 2011
    • Rolf Prehn
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    FLAT SEAL
    • Publication number 20110101626
    • Publication date May 5, 2011
    • FEDERAL-MOGUL SEALING SYSTEMS GMBH
    • Rolf Prehn
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    BIMETALLIC STATIC GASKET AND METHOD OF CONSTRUCTION THEREOF
    • Publication number 20110079964
    • Publication date Apr 7, 2011
    • Thomas W. Swasey
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    FLAT SEAL
    • Publication number 20110006487
    • Publication date Jan 13, 2011
    • Rolf Prehn
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...