TREA

John Kelsey

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  • Jefferson City, MO, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Copy security for portable music players
    • Patent number 6,367,019
    • Issue date Apr 2, 2002
    • Liquid Audio, Inc.
    • Steven T. Ansell
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Event auditing system
    • Patent number 5,978,475
    • Issue date Nov 2, 1999
    • Counterpane Internet Security, Inc.
    • Bruce Schneier
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Digital signature with auditing bits
    • Patent number 5,956,404
    • Issue date Sep 21, 1999
    • Bruce Schneier
    • G06 - COMPUTING CALCULATING COUNTING