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Robert H. Dean

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  • Evanston, IL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Pressure relief valve with field-replaceable high corrosion-resista...
    • Patent number 6,668,853
    • Issue date Dec 30, 2003
    • Delaware Capital Formation, Inc.
    • Robert H. Dean
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Handles for bottom outlet valve assembly
    • Patent number 6,213,449
    • Issue date Apr 10, 2001
    • Delaware Capital Formation, Inc.
    • Ralph G. Portis
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Top operated bottom outlet valve assembly
    • Patent number 6,112,762
    • Issue date Sep 5, 2000
    • Delaware Capital Formation, Inc.
    • Robert H. Dean
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Switch level control for tank ullage determining system
    • Patent number 5,886,312
    • Issue date Mar 23, 1999
    • Midland Manufacturing Corp.
    • Gaston C. Barmore
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Frangible valve handle
    • Patent number 5,544,675
    • Issue date Aug 13, 1996
    • Midland Manufacturing Corp.
    • Robert H. Dean
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    Manway cover balancing mechanism
    • Patent number 5,394,650
    • Issue date Mar 7, 1995
    • Midland Manufacturing Corp.
    • Robert H. Dean
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Valve including resilient mount for pin
    • Patent number 5,342,026
    • Issue date Aug 30, 1994
    • Midland Manufacturing Corp.
    • Robert H. Dean
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Actuator for valve
    • Patent number 5,340,078
    • Issue date Aug 23, 1994
    • Midland Manufacturing Corp.
    • Robert H. Dean
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    T-fitting
    • Patent number 5,269,342
    • Issue date Dec 14, 1993
    • Midland Manufacturing Corp.
    • Ralph G. Portis
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Powered actuator for valve
    • Patent number 5,257,771
    • Issue date Nov 2, 1993
    • Midland Manufacturing Corp.
    • Ralph G. Portis
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Spill valve
    • Patent number 5,165,444
    • Issue date Nov 24, 1992
    • Midland Manufacturing Corp.
    • Robert H. Dean
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
  • Information Patent Grant

    Tank-level alarm control system
    • Patent number 4,924,703
    • Issue date May 15, 1990
    • Midland Manufacturing Corp.
    • John J. White
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Valve
    • Patent number 4,489,915
    • Issue date Dec 25, 1984
    • International Telephone & Telegraph Corporation
    • Michael D. West
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Backflow prevention devices
    • Patent number 4,190,071
    • Issue date Feb 26, 1980
    • International Telephone & Telegraph Corporation
    • Robert H. Dean
    • E03 - WATER SUPPLY SEWERAGE

Patents Applicationslast 30 patents