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Jan D. Graves

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  • Norwalk, OH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method of effecting efficient flow equalization
    • Patent number 7,691,272
    • Issue date Apr 6, 2010
    • Jan D. Graves
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Wastewater flow equalization system and method
    • Patent number 7,674,372
    • Issue date Mar 9, 2010
    • Jan D. Graves
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Settling and retention basin
    • Patent number 7,666,301
    • Issue date Feb 23, 2010
    • Jan D. Graves
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Wastewater management system
    • Patent number 6,878,281
    • Issue date Apr 12, 2005
    • Norwalk Wastewater Equipment Company
    • Jan D. Graves
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Wastewater management system
    • Patent number 6,860,994
    • Issue date Mar 1, 2005
    • Norwalk Wastewater Equipment Company
    • Jan D. Graves
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Wastewater treatment apparatus
    • Patent number 6,763,950
    • Issue date Jul 20, 2004
    • Norwalk Wastewater Equipment Company
    • Jan D. Graves
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Compression clamp for water-tight sealing of tubular components
    • Patent number 6,764,111
    • Issue date Jul 20, 2004
    • Norwalk Wastewater Equipment Company
    • Jan D. Graves
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Wastewater management system
    • Patent number 6,763,951
    • Issue date Jul 20, 2004
    • Norwalk Wastewater Equipment Company
    • Jan D. Graves
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Wastewater management method
    • Patent number 6,416,667
    • Issue date Jul 9, 2002
    • Jan D. Graves
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Tablet feeder for water and/or wastewater
    • Patent number 6,077,484
    • Issue date Jun 20, 2000
    • Norwalk Wastewater Equipment Company
    • Jan D. Graves
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Flow augmenting device for a wastewater treatment plant
    • Patent number 5,868,172
    • Issue date Feb 9, 1999
    • Norwalk Wastewater Equipment Company
    • Jan D. Graves
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Method of augmenting flow in a wastewater treatment plant
    • Patent number 5,667,689
    • Issue date Sep 16, 1997
    • Norwalk Wastewater Equipment Company
    • Jan D. Graves
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Flow augmenting devices for a wastewater treatment plant
    • Patent number 5,569,376
    • Issue date Oct 29, 1996
    • Norwalk Wastewater Equipment Company
    • Jan D. Graves
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Wastewater treatment apparatus with an outer filtration unit and an...
    • Patent number 5,413,706
    • Issue date May 9, 1995
    • Norwalk Wastewater Equipment Company d/b/a NORWECO, Inc.
    • Jan D. Graves
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Closure for a wastewater treatment mechanism
    • Patent number 5,409,604
    • Issue date Apr 25, 1995
    • Norwalk Wastewater Equipment Company
    • Jan D. Graves
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Wastewater treatment mechanism
    • Patent number 5,306,425
    • Issue date Apr 26, 1994
    • Norwalk Wastewater Equipment Company
    • Jan D. Graves
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Wastewater treatment mechanism
    • Patent number 5,264,120
    • Issue date Nov 23, 1993
    • Norwalk Wastewater Equipment Company
    • Jan D. Graves
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Wastewater treatment mechanism
    • Patent number 5,207,896
    • Issue date May 4, 1993
    • Norwalk Wastewater Equipment Company
    • Jan D. Graves
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Wastewater treatment plant
    • Patent number 4,608,157
    • Issue date Aug 26, 1986
    • Norwalk Wastewater Equipment Company
    • Jan D. Graves
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Wastewater treatment plant
    • Patent number 4,505,813
    • Issue date Mar 19, 1985
    • Norwalk Wastewater Equipment Company
    • Jan D. Graves
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

Patents Applicationslast 30 patents

  • Information Patent Application

    FILTERING SYSTEM FOR REMOVING CHEMICALS FROM FLUIDS
    • Publication number 20170313597
    • Publication date Nov 2, 2017
    • Jan D. Graves
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Application

    Settling and retention basin
    • Publication number 20080314816
    • Publication date Dec 25, 2008
    • Jan D. Graves
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Application

    Method of effecting efficient flow equalization
    • Publication number 20080314845
    • Publication date Dec 25, 2008
    • Jan D. Graves
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Application

    Wastewater flow equalization system and method
    • Publication number 20080179237
    • Publication date Jul 31, 2008
    • Jan D. Graves
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Application

    Wastewater management system
    • Publication number 20030010713
    • Publication date Jan 16, 2003
    • Jan D. Graves
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Application

    Wastewater management system
    • Publication number 20020153306
    • Publication date Oct 24, 2002
    • Jan D. Graves
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Application

    Wastewater management system
    • Publication number 20020153305
    • Publication date Oct 24, 2002
    • Jan D. Graves
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Application

    Wastewater management system
    • Publication number 20020148781
    • Publication date Oct 17, 2002
    • Jan D. Graves
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Application

    Wastewater management system
    • Publication number 20020148782
    • Publication date Oct 17, 2002
    • Jan D. Graves
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE