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Douglas J. Callahan

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  • Rochester Hills, MI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Quick connector assembly
    • Patent number 8,297,659
    • Issue date Oct 30, 2012
    • Miniature Precision Components, Inc.
    • Douglas John Callahan
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Integrated vapor management and rollover valve for a fuel tank
    • Patent number 7,762,240
    • Issue date Jul 27, 2010
    • Miniature Precision Components, Inc.
    • Douglas J. Callahan
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Passive evaporative emission control module
    • Patent number 7,610,905
    • Issue date Nov 3, 2009
    • Douglas J. Callahan
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Duct coupling
    • Patent number 7,566,079
    • Issue date Jul 28, 2009
    • Douglas Callahan
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    Air induction system with hydrocarbon trap assembly
    • Patent number 7,547,350
    • Issue date Jun 16, 2009
    • Miniature Precision Components, Inc.
    • Douglas J Callahan
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Duct assembly
    • Patent number 7,497,478
    • Issue date Mar 3, 2009
    • Miniature Precision Components, Inc.
    • Douglas J. Callahan
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Integrated vapor management and rollover valve for a fuel tank
    • Patent number 7,318,424
    • Issue date Jan 15, 2008
    • Miniature Precision Components, Inc.
    • Douglas J. Callahan
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Heated PCV system
    • Patent number 7,316,226
    • Issue date Jan 8, 2008
    • Miniature Precision Components, Inc.
    • Douglas J. Callahan
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Grant

    Passive evaporative emission control module
    • Patent number 7,311,088
    • Issue date Dec 25, 2007
    • Miniature Precision Components, Inc.
    • Douglas John Callahan
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Heated PCV valve
    • Patent number 6,546,921
    • Issue date Apr 15, 2003
    • Miniature Precision Components
    • Douglas J. Callahan
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...

Patents Applicationslast 30 patents

  • Information Patent Application

    ITEM-CONTAINING PILLOW
    • Publication number 20220022670
    • Publication date Jan 27, 2022
    • Douglas John Callahan
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Application

    QUICK CONNECTOR ASSEMBLY
    • Publication number 20120211977
    • Publication date Aug 23, 2012
    • Douglas John Callahan
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Integrated Vapor Management And Rollover Valve For A Fuel Tank
    • Publication number 20080105304
    • Publication date May 8, 2008
    • Douglas J. Callahan
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    PASSIVE EVAPORATIVE EMISSION CONTROL MODULE
    • Publication number 20080092857
    • Publication date Apr 24, 2008
    • Douglas J. Callahan
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Application

    PASSIVE EVAPORATIVE EMISSION CONTROL MODULE
    • Publication number 20070283937
    • Publication date Dec 13, 2007
    • MINIATURE PRECISION COMPONENTS, INC.
    • Douglas J. Callahan
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Application

    Integrated vapor management and rollover valve for a fuel tank
    • Publication number 20060254641
    • Publication date Nov 16, 2006
    • Douglas J. Callahan
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    HEATED PCV SYSTEM
    • Publication number 20060236989
    • Publication date Oct 26, 2006
    • Douglas J. Callahan
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    Air induction system with hydrocarbon trap assembly
    • Publication number 20060150811
    • Publication date Jul 13, 2006
    • Douglas J. Callahan
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Application

    Duct assembly
    • Publication number 20060022460
    • Publication date Feb 2, 2006
    • Douglas J. Callahan
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS