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James L. Berkhoel

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  • St. Paul Park, MN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Filter frame for bag house filter, and method
    • Patent number 7,344,577
    • Issue date Mar 18, 2008
    • Donaldson Company, Inc.
    • James Leonard Berkhoel
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Air filter assembly for filtering air with particulate matter
    • Patent number 6,090,173
    • Issue date Jul 18, 2000
    • Donaldson Company, Inc.
    • Steven A. Johnson
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Filter element
    • Patent number 5,954,849
    • Issue date Sep 21, 1999
    • Donaldson Company, Inc.
    • James Leonard Berkhoel
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Filter element
    • Patent number 5,803,941
    • Issue date Sep 8, 1998
    • Donaldson Company, Inc.
    • James Leonard Berkhoel
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Air filtering method and apparatus
    • Patent number 4,792,344
    • Issue date Dec 20, 1988
    • Donaldson Company, Inc.
    • Mark D. Belcher
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Filter element mounting mechanism
    • Patent number 4,209,310
    • Issue date Jun 24, 1980
    • Donaldson Company, Inc.
    • James L. Berkhoel
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Self-cleaning air filter
    • Patent number 4,199,334
    • Issue date Apr 22, 1980
    • Donaldson Company, Inc.
    • James L. Berkhoel
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

Patents Applicationslast 30 patents