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Christopher M. Johnson

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  • Golden Valley, MN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Filter for electronic enclosure
    • Patent number 7,591,868
    • Issue date Sep 22, 2009
    • Donaldson Company, Inc.
    • Christopher M. Johnson
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Electronic breather bag filter
    • Patent number 6,926,761
    • Issue date Aug 9, 2005
    • Donaldson Company, Inc.
    • Christopher M. Johnson
    • G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

  • Information Patent Application

    Adsorbent Carbon Breather with Scrim for Improved Flow
    • Publication number 20060272507
    • Publication date Dec 7, 2006
    • Christopher M. Johnson
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Application

    Electronic breather bag filter
    • Publication number 20040231518
    • Publication date Nov 25, 2004
    • Donaldson Company, Inc.
    • Christopher M. Johnson
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL