TREA

Karl N. Caldwell

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  • Norcross, GA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Self-filtration cap
    • Patent number 5,567,309
    • Issue date Oct 22, 1996
    • Alcott Chromatography, Inc.
    • Robert J. Classon
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Tubular film having sealing layer of propylene ethylene random copo...
    • Patent number 4,501,780
    • Issue date Feb 26, 1985
    • W. R. Grace & Co., Cryovac Div.
    • Johnnie J. Walters
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL