TREA

R. Lee Roberts

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  • Boothwyn, PA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Air grid for underdrains and similar systems
    • Patent number 5,673,481
    • Issue date Oct 7, 1997
    • RF Delaware, Inc.
    • R. Lee Roberts
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Air grid for underdrains and similar systems
    • Patent number 5,534,202
    • Issue date Jul 9, 1996
    • Roberts Filter Manufacturing Company
    • R. Lee Roberts
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Lateral underdrain
    • Patent number 5,413,710
    • Issue date May 9, 1995
    • Roberts Filter Manufacturing Company
    • R. Lee Roberts
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Systems and methods for clarifying liquids
    • Patent number 5,314,630
    • Issue date May 24, 1994
    • Roberts Filter Manufacturing Company
    • Annabelle Kim
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Upflow filter and method of washing same
    • Patent number 5,198,124
    • Issue date Mar 30, 1993
    • Roberts Filter Manufacturing Company
    • Annabelle Kim
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Nozzles for rotary agitators
    • Patent number 5,127,582
    • Issue date Jul 7, 1992
    • Roberts Filter Manufacturing Company
    • R. Lee Roberts
    • B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
  • Information Patent Grant

    Method of washing an upflow filter and filter bed employed in said...
    • Patent number 5,080,808
    • Issue date Jan 14, 1992
    • Roberts Filter Manufacturing Company
    • Annabelle Kim
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Rotary agitator
    • Patent number 5,061,080
    • Issue date Oct 29, 1991
    • Roberts Filter Manufacturing Company
    • Donald J. MacKay
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL