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Michael J Duer

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  • Zelienople, PA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Elastomeric in-line tide gate valve
    • Patent number 10,550,954
    • Issue date Feb 4, 2020
    • Red Valve Company, Inc.
    • Michael J. Duer
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Tank overflow pipe adjustable dechlorinating device
    • Patent number 10,538,438
    • Issue date Jan 21, 2020
    • Red Valve Company, Inc.
    • Michael J. Duer
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Multi-outlet check valve nozzle
    • Patent number 10,316,977
    • Issue date Jun 11, 2019
    • Red Valve Company, Inc.
    • Spiros G. Raftis
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Grant

    Method and apparatus for preventing stagnation in fluid reservoirs
    • Patent number 7,104,279
    • Issue date Sep 12, 2006
    • Red Valve Co., Inc.
    • Spiros G. Raftis
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Reinforced tide gate valve
    • Patent number 6,585,005
    • Issue date Jul 1, 2003
    • Red Valve Co., Inc.
    • Spiros G. Raftis
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Check valve with oversized bill
    • Patent number 6,367,505
    • Issue date Apr 9, 2002
    • Red Valve Co., Inc.
    • Spiros G. Raftis
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Air diffuser valve
    • Patent number 6,016,839
    • Issue date Jan 25, 2000
    • Red Valve Co., Inc.
    • Spiros G. Raftis
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Asymmetrical check valve
    • Patent number 5,931,197
    • Issue date Aug 3, 1999
    • Red Valve Co., Inc.
    • Spiros G. Raftis
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Inversion-resistant, readily openable tide gate valve
    • Patent number 5,769,125
    • Issue date Jun 23, 1998
    • Red Valve Company, Inc.
    • Michael Duer
    • E03 - WATER SUPPLY SEWERAGE
  • Information Patent Grant

    Tide gate valve with curvilinear bill
    • Patent number 5,727,593
    • Issue date Mar 17, 1998
    • Red Valve Company, Inc.
    • Michael Duer
    • E03 - WATER SUPPLY SEWERAGE

Patents Applicationslast 30 patents