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Richard H. Ferguson

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  • Wetzel, WV, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Chemical feeder
    • Patent number 6,544,487
    • Issue date Apr 8, 2003
    • PPG Industries Ohio, Inc.
    • Richard H. Ferguson
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Chemical feeder
    • Patent number 6,298,871
    • Issue date Oct 9, 2001
    • PPG Industries Ohio, Inc.
    • Stanley R. Pickens
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Chemical feeder
    • Patent number 6,138,703
    • Issue date Oct 31, 2000
    • PPG Industries, Ohio
    • Richard H. Ferguson
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Method of controlling the amount of sanitizing agent in an aqueous...
    • Patent number 5,960,808
    • Issue date Oct 5, 1999
    • PPG Industries Ohio, Inc.
    • Richard H. Ferguson
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Swimming pool chemical dispenser
    • Patent number 5,662,795
    • Issue date Sep 2, 1997
    • PPG Industries, Inc.
    • Stanley R. Pickens
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Chemical feeder
    • Patent number 5,384,102
    • Issue date Jan 24, 1995
    • PPG Industries, Inc.
    • Richard H. Ferguson
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Granular calcium hypochlorite treatment process
    • Patent number 5,205,961
    • Issue date Apr 27, 1993
    • PPG Industries, Inc.
    • Donald E. Shenefiel
    • C01 - INORGANIC CHEMISTRY