TREA

Robert L. Roberts

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  • Boothwyn, PA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Filter employing barrier
    • Patent number 4,750,999
    • Issue date Jun 14, 1988
    • Roberts Filter Manufacturing Company
    • Robert L. Roberts
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Filter bottom construction
    • Patent number 4,619,765
    • Issue date Oct 28, 1986
    • Roberts Filter Manufacturing Company
    • Robert L. Roberts
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Filter
    • Patent number 4,454,040
    • Issue date Jun 12, 1984
    • Robert L. Roberts
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Filter bottom
    • Patent number 4,364,830
    • Issue date Dec 21, 1982
    • Roberts Filter Manufacturing Company
    • Robert L. Roberts
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Biological treating systems
    • Patent number 4,177,147
    • Issue date Dec 4, 1979
    • Roberts Filter Manufacturing Company
    • Robert L. Roberts
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE