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Donald D. Bartholomew

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  • Mt. Clemens, MI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Quick connector with confirmation feature
    • Patent number 6,234,544
    • Issue date May 22, 2001
    • Proprietary Technology, Inc.
    • Donald D. Bartholomew
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Quick connector
    • Patent number 6,170,886
    • Issue date Jan 9, 2001
    • Proprietary Technology, Inc.
    • Donald D. Bartholomew
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Means of coupling of non-threaded connections
    • Patent number 6,086,113
    • Issue date Jul 11, 2000
    • Proprietary Technology, Inc.
    • Donald D. Bartholomew
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Quick connector with secondary latch confirming feature
    • Patent number 6,062,607
    • Issue date May 16, 2000
    • Proprietary Technology, Inc.
    • Donald D. Bartholomew
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Method of bending tubing
    • Patent number 6,014,884
    • Issue date Jan 18, 2000
    • Proprietary Technology, Inc.
    • Donald D. Bartholomew
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Quick connector having ring for confirming proper connection
    • Patent number 6,010,160
    • Issue date Jan 4, 2000
    • Proprietary Technology, Inc.
    • Donald D. Bartholomew
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Swivelable quick connector assembly
    • Patent number 5,992,903
    • Issue date Nov 30, 1999
    • Proprietary Technology, Inc.
    • Donald D. Bartholomew
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Swivelable quick connector assembly
    • Patent number 5,964,484
    • Issue date Oct 12, 1999
    • Proprietary Technology, Inc.
    • Donald D. Bartholomew
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Connection verification and secondary latch device
    • Patent number 5,931,509
    • Issue date Aug 3, 1999
    • Proprietary Technology, Inc.
    • Donald D. Bartholomew
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Means of coupling of non-threaded connections
    • Patent number 5,927,761
    • Issue date Jul 27, 1999
    • Proprietary Technology, Inc.
    • Donald D. Bartholomew
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Apparatus for and method of attaching conduits to a fitting
    • Patent number 5,868,435
    • Issue date Feb 9, 1999
    • Proprietary Technology, Inc.
    • Donald D. Bartholomew
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Means of coupling non-threaded connections
    • Patent number 5,853,204
    • Issue date Dec 29, 1998
    • Proprietary Technology, Inc.
    • Donald D. Bartholomew
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Conduit coupling
    • Patent number 5,826,920
    • Issue date Oct 27, 1998
    • Proprietary Technology, Inc.
    • Donald D. Bartholomew
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Quick connector
    • Patent number 5,794,984
    • Issue date Aug 18, 1998
    • Proprietary Technology, Inc.
    • Donald D. Bartholomew
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Swivelable quick connector assembly
    • Patent number 5,782,508
    • Issue date Jul 21, 1998
    • Proprietary Technologies, Inc.
    • Donald D. Bartholomew
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Connection verification and secondary latch device
    • Patent number 5,779,279
    • Issue date Jul 14, 1998
    • Proprietary Technology, Inc.
    • Donald D. Bartholomew
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Means of coupling of non-threaded connections
    • Patent number 5,775,738
    • Issue date Jul 7, 1998
    • Propiretary Technology, Inc.
    • Donald D. Bartholomew
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Manually releasable quick connector
    • Patent number 5,732,984
    • Issue date Mar 31, 1998
    • Proprietary Technology, Inc.
    • Donald D. Bartholomew
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Hose assembly having a distortion limiting wall for creating a dyna...
    • Patent number 5,716,079
    • Issue date Feb 10, 1998
    • Proprietary Technology, Inc.
    • Donald D. Bartholomew
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Tubular assembly and method of making same
    • Patent number 5,655,796
    • Issue date Aug 12, 1997
    • Proprietary Technology, Inc.
    • Donald Dekle Bartholomew
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Quick connector with one-piece retainer
    • Patent number 5,626,371
    • Issue date May 6, 1997
    • Donald D. Bartholomew
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Method of attaching a bead assembly to a tubular conduit
    • Patent number 5,621,959
    • Issue date Apr 22, 1997
    • Proprietary Technology, Inc.
    • Donald D. Bartholomew
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Swivelable connector for plain end tubes
    • Patent number 5,582,437
    • Issue date Dec 10, 1996
    • Proprietary Technology, Inc.
    • Donald D. Bartholomew
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Spring metal flow control apparatus
    • Patent number 5,582,210
    • Issue date Dec 10, 1996
    • Proprietary Technology, Inc.
    • Donald D. Bartholomew
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    Apparatus for attaching hoses and tubes to a fitting
    • Patent number 5,582,436
    • Issue date Dec 10, 1996
    • Proprietary Technology, Inc.
    • Donald D. Bartholomew
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Apparatus for attaching hoses and tubes to a fitting
    • Patent number 5,568,948
    • Issue date Oct 29, 1996
    • Proprietary Technology, Inc.
    • Donald D. Bartholomew
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Self locking slitted corrugated tubing
    • Patent number 5,566,722
    • Issue date Oct 22, 1996
    • Proprietary Technology, Inc.
    • Donald D. Bartholomew
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Quick connector
    • Patent number 5,551,732
    • Issue date Sep 3, 1996
    • Proprietary Technology, Inc.
    • Donald D. Bartholomew
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Quick connect fluid coupling
    • Patent number 5,546,985
    • Issue date Aug 20, 1996
    • Proprietary Technology, Inc.
    • Donald D. Bartholomew
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Apparatus for attaching hoses and tubes to a fitting
    • Patent number 5,544,923
    • Issue date Aug 13, 1996
    • Proprietary Technology, Inc.
    • Donald D. Bartholomew
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    Quick connector
    • Publication number 20020117853
    • Publication date Aug 29, 2002
    • Proprietary Technology, Inc
    • Donald D. Bartholomew
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...