Swells when wet

Patents Grantslast 30 patents

  • Information Patent Grant

    Rust-resistant sleeve for use in a branch hole of a water pipeline

    • Patent number 6,158,474
    • Issue date Dec 12, 2000
    • Tabuchi Co., Ltd.
    • Kazuo Ishikawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Protective sleeve and related method for protecting a buried pipe j...

    • Patent number 6,039,359
    • Issue date Mar 21, 2000
    • Coreflex LLC
    • Frank P. Valenziano
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Rust-resistant sleeve for use in a branch hole of a water pipeline

    • Patent number 5,971,441
    • Issue date Oct 26, 1999
    • Tabuchi Co., Ltd.
    • Kazuo Ishikawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Seal for joint, and method of installing same seal

    • Patent number 5,290,045
    • Issue date Mar 1, 1994
    • C. I. Kasei Co., Ltd.
    • Michiyoshi Terauchi
    • E03 - WATER SUPPLY SEWERAGE
  • Information Patent Grant

    Washer with elastic water-swellable rubber

    • Patent number 5,193,960
    • Issue date Mar 16, 1993
    • Asahi Denka Kogyo Kabushiki Kaisha
    • Takuo Fukushima
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Appliance for preventing water from leaking through joint

    • Patent number 5,172,919
    • Issue date Dec 22, 1992
    • C. I. Kasei Co., Ltd.
    • Kazuhiro Takasaki
    • E04 - BUILDING
  • Information Patent Grant

    Pipe joint sealer

    • Patent number 5,096,206
    • Issue date Mar 17, 1992
    • W. E. Hall Company
    • James R. Andre
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Fluid-tight flexible connection between hollow sections

    • Patent number 4,626,005
    • Issue date Dec 2, 1986
    • Gustav Stifter
    • E04 - BUILDING
  • Information Patent Grant

    High swell gasket material

    • Patent number 4,560,718
    • Issue date Dec 24, 1985
    • Cummins Engine Company, Inc.
    • Stephen Ritchey
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Bentonite-gelled oil waterproofing composition

    • Patent number 4,209,568
    • Issue date Jun 24, 1980
    • American Colloid Company
    • Arthur G. Clem
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Emergency water leak plug

    • Patent number 4,160,465
    • Issue date Jul 10, 1979
    • Charles J. Hsu
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    3915460

    • Patent number 3,915,460
    • Issue date Oct 28, 1975
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    3797805

    • Patent number 3,797,805
    • Issue date Mar 19, 1974
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    3540760

    • Patent number 3,540,760
    • Issue date Nov 17, 1970
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    3276929

    • Patent number 3,276,929
    • Issue date Oct 4, 1966
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    3088555

    • Patent number 3,088,555
    • Issue date May 7, 1963
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    2945541

    • Patent number 2,945,541
    • Issue date Jul 19, 1960
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2550560

    • Patent number 2,550,560
    • Issue date Apr 24, 1951
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    2094692

    • Patent number 2,094,692
    • Issue date Oct 5, 1937
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    1216317

    • Patent number 1,216,317
    • Issue date Feb 20, 1917
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    1206111

    • Patent number 1,206,111
    • Issue date Nov 28, 1916
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    672255

    • Patent number 672,255
    • Issue date Apr 16, 1901
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    2237

    • Patent number 2,237
    • Issue date Sep 4, 1841
    • A41 - WEARING APPAREL

Patents Applicationslast 30 patents