TREA

Charles W. Johnson

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  • Amarillo, TX, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Wound oil filter
    • Patent number 5,679,251
    • Issue date Oct 21, 1997
    • The OilGuard Company, LLC
    • Kenneth E. Swanson
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Oil filtration method and element of wound cotton/paper composition
    • Patent number 5,552,065
    • Issue date Sep 3, 1996
    • The OilGuard Company LLC
    • Mark T. Meddock
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL