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Jim Gerhardt

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  • St. Augusta, MN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Freewheel hub
    • Patent number 10,787,033
    • Issue date Sep 29, 2020
    • Christianson Systems, Inc.
    • Jim Gerhardt
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Cassette driver for a freewheel hub
    • Patent number 10,119,579
    • Issue date Nov 6, 2018
    • Christianson Systems, Inc.
    • Jim Gerhardt
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Cassette driver for a freewheel hub
    • Patent number 10,113,597
    • Issue date Oct 30, 2018
    • Christianson Systems, Inc.
    • Jim Gerhardt
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Freewheel hub
    • Patent number 9,662,938
    • Issue date May 30, 2017
    • Christianson Systems, Inc.
    • Jim Gerhardt
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Freewheel hub
    • Patent number 9,102,197
    • Issue date Aug 11, 2015
    • ChristiansonSystems, Inc.
    • Jim Gerhardt
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Rotor for centrifugal compressor
    • Patent number 8,313,300
    • Issue date Nov 20, 2012
    • Christianson Systems, Inc.
    • Jim Gerhardt
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents

  • Information Patent Application

    FREEWHEEL HUB
    • Publication number 20210129584
    • Publication date May 6, 2021
    • Christianson Systems, Inc.
    • Jim Gerhardt
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    FREEWHEELING HUB SYSTEM
    • Publication number 20200079152
    • Publication date Mar 12, 2020
    • Christianson Systems, Inc.
    • Jim Gerhardt
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    CHAINRING
    • Publication number 20180274651
    • Publication date Sep 27, 2018
    • Christianson Systems, Inc.
    • Jim Gerhardt
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Application

    FREEWHEEL HUB
    • Publication number 20170334242
    • Publication date Nov 23, 2017
    • Christianson Systems, Inc.
    • Jim Gerhardt
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    CASSETTE DRIVER FOR A FREEWHEEL HUB
    • Publication number 20170284482
    • Publication date Oct 5, 2017
    • Christianson Systems, Inc.
    • Jim Gerhardt
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    CASSETTE DRIVER FOR A FREEWHEEL HUB
    • Publication number 20170284481
    • Publication date Oct 5, 2017
    • Christianson Systems, Inc.
    • Jim Gerhardt
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    FREEWHEEL HUB
    • Publication number 20150314642
    • Publication date Nov 5, 2015
    • Christianson Systems, Inc.
    • Jim Gerhardt
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    FREEWHEEL HUB
    • Publication number 20140225424
    • Publication date Aug 14, 2014
    • Christianson Systems, Inc.
    • Jim Gerhardt
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Rotor for centrifugal compressor
    • Publication number 20090142196
    • Publication date Jun 4, 2009
    • Jim Gerhardt
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...