TREA

Roberts Filter Manufacturing Company

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Organization

  • Darby, PA, US
Organizations

Patents Grantslast 30 patents

  • 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
  • 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 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

    Treatment facility with backwash control system
    • Patent number 4,187,175
    • Issue date Feb 5, 1980
    • Robert Filter Manufacturing Company
    • Charles V. 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

Patents Applicationslast 30 patents

Trademarklast 30 trademarks

  • Information Trademark

    74170820 - RELIANT
    • Serial number 74170820
    • Registration number 1754492
    • Filing date May 28, 1991
    • ROBERTS FILTER MANUFACTURING COMPANY
    • 11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
  • Information Trademark

    74170031 - SENTINEL
    • Serial number 74170031
    • Registration number 1794131
    • Filing date May 28, 1991
    • ROBERTS FILTER MANUFACTURING COMPANY
    • 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
  • Information Trademark

    74170124 - GEMINI
    • Serial number 74170124
    • Registration number 1768011
    • Filing date May 28, 1991
    • ROBERTS FILTER MANUFACTURING COMPANY
    • 11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
  • Information Trademark

    74170825 - CLARION
    • Serial number 74170825
    • Registration number 1794221
    • Filing date May 28, 1991
    • ROBERTS FILTER MANUFACTURING COMPANY
    • 11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
  • Information Trademark

    74167661 - AIR GRID
    • Serial number 74167661
    • Registration number 1805218
    • Filing date May 17, 1991
    • ROBERTS FILTER MANUFACTURING COMPANY
    • 11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
  • Information Trademark

    74161011 - R
    • Serial number 74161011
    • Registration number 1777130
    • Filing date Apr 26, 1991
    • ROBERTS FILTER MANUFACTURING COMPANY
    • 11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
  • Information Trademark

    74160780 - UNISWEEP
    • Serial number 74160780
    • Registration number 1788841
    • Filing date Apr 25, 1991
    • ROBERTS FILTER MANUFACTURING COMPANY
    • 11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
  • Information Trademark

    74095160 - CONTACLARIFIER
    • Serial number 74095160
    • Registration number 1692797
    • Filing date Sep 10, 1990
    • ROBERTS FILTER MANUFACTURING COMPANY
    • 11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
  • Information Trademark

    74095304 - PACER II
    • Serial number 74095304
    • Registration number 1788837
    • Filing date Sep 10, 1990
    • ROBERTS FILTER MANUFACTURING COMPANY
    • 11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
  • Information Trademark

    72284506 - RMP ROBERTS MANHATTAN PROCESS
    • Serial number 72284506
    • Registration number 859682
    • Filing date Nov 9, 1967
    • ROBERTS FILTER MANUFACTURING COMPANY, INC.
    • 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
  • Information Trademark

    72284507 - MANHATTAN
    • Serial number 72284507
    • Registration number 853857
    • Filing date Nov 9, 1967
    • ROBERTS FILTER MANUFACTURING COMPANY,INC.
    • 42 - Scientific and technological services and research and design relating thereto