TREA

Donald J. Gray

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  • East Greenwich, RI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Solvent cleaning system
    • Patent number 6,004,403
    • Issue date Dec 21, 1999
    • Gebhard-Gray Associates
    • Donald J. Gray
    • D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
  • Information Patent Grant

    Dry cleaning and degreasing system
    • Patent number 5,702,535
    • Issue date Dec 30, 1997
    • Gebhard-Gray Associates
    • Donald J. Gray
    • D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
  • Information Patent Grant

    Filter regeneration system
    • Patent number 5,630,434
    • Issue date May 20, 1997
    • Donald J. Gray
    • D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
  • Information Patent Grant

    Solvent cleaning system
    • Patent number 5,538,025
    • Issue date Jul 23, 1996
    • SEREC Partners
    • Donald J. Gray
    • D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
  • Information Patent Grant

    Cleaning method and system
    • Patent number 5,469,876
    • Issue date Nov 28, 1995
    • Donald J. Gray
    • D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
  • Information Patent Grant

    Cleaning method and system
    • Patent number 5,240,507
    • Issue date Aug 31, 1993
    • Donald J. Gray
    • D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...