having a heterogeneous dielectric

Patents Grantslast 30 patents

  • Information Patent Grant

    Electret-containing filter media

    • Patent number 11,077,394
    • Issue date Aug 3, 2021
    • Hollingsworth & Vose Company
    • Bruce Smith
    • B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
  • Information Patent Grant

    Piezoelectric stack

    • Patent number 10,998,488
    • Issue date May 4, 2021
    • VALQUA, LTD.
    • Tetsuya Komeda
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Element and electric generator

    • Patent number 10,636,958
    • Issue date Apr 28, 2020
    • Ricoh Company, Ltd.
    • Yuko Arizumi
    • B32 - LAYERED PRODUCTS
  • Information Patent Grant

    Electret element, microphone having electret element mounted therei...

    • Patent number 10,511,914
    • Issue date Dec 17, 2019
    • National University Corporation Shizuoka University
    • Gen Hashiguchi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Electret element, microphone having electret element mounted therei...

    • Patent number 10,405,103
    • Issue date Sep 3, 2019
    • National University Corporation Shizuoka University
    • Gen Hashiguchi
    • H01 - BASIC ELECTRIC ELEMENTS
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    Tunable shape memory capacitor and a method of preparation thereof

    • Patent number 10,181,381
    • Issue date Jan 15, 2019
    • King Abdulaziz University
    • Faten Ebrahim S. Al-Hazmi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Electret material and electrostatic-type acoustic transducer

    • Patent number 8,971,553
    • Issue date Mar 3, 2015
    • Nitto Denko Corporation
    • Seiichi Takaoka
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Electret sheet

    • Patent number 8,790,567
    • Issue date Jul 29, 2014
    • Sekisui Chemical Co., Ltd.
    • Kazuho Uchida
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
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    Energy storage device

    • Patent number 8,611,067
    • Issue date Dec 17, 2013
    • Daniel A. Pearson
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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    Process for producing electret, and electrostatic induction convers...

    • Patent number 8,288,475
    • Issue date Oct 16, 2012
    • Asahi Glass Company, Limited
    • Kimiaki Kashiwagi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
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    Electret and electrostatic induction conversion device

    • Patent number 8,277,927
    • Issue date Oct 2, 2012
    • Asahi Glass Company, Limited
    • Kimiaki Kashiwagi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
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    Description of an inorganic polymer “electret ”in a colloidal state...

    • Patent number 7,015,254
    • Issue date Mar 21, 2006
    • Robert R. Holcomb
    • H01 - BASIC ELECTRIC ELEMENTS
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    Poromeric material having uniformly distributed electrets for maint...

    • Patent number 5,384,337
    • Issue date Jan 24, 1995
    • William D. Budinger
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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    Electret article

    • Patent number 4,513,049
    • Issue date Apr 23, 1985
    • Mitsui Petrochemical Industries, Ltd.
    • Kazuyuki Yamasaki
    • B32 - LAYERED PRODUCTS
  • Information Patent Grant

    Piezo-electric material

    • Patent number 4,128,489
    • Issue date Dec 5, 1978
    • Mitsubishi Petrochemical Company Limited
    • Iwao Seo
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Process for making a piezoelectric body

    • Patent number 3,943,387
    • Issue date Mar 9, 1976
    • Siemens Aktiengesellschaft
    • Richard Veith
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    3490887

    • Patent number 3,490,887
    • Issue date Jan 20, 1970
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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    3454459

    • Patent number 3,454,459
    • Issue date Jul 8, 1969
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Grant

    3451126

    • Patent number 3,451,126
    • Issue date Jun 24, 1969
    • C03 - GLASS MINERAL OR SLAG WOOL
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    3365631

    • Patent number 3,365,631
    • Issue date Jan 23, 1968
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Grant

    3350610

    • Patent number 3,350,610
    • Issue date Oct 31, 1967
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    3307089

    • Patent number 3,307,089
    • Issue date Feb 28, 1967
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    3301786

    • Patent number 3,301,786
    • Issue date Jan 31, 1967
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3213027

    • Patent number 3,213,027
    • Issue date Oct 19, 1965
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3067140

    • Patent number 3,067,140
    • Issue date Dec 4, 1962
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Grant

    2384541

    • Patent number 2,384,541
    • Issue date Sep 11, 1945
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    2299260

    • Patent number 2,299,260
    • Issue date Oct 20, 1942
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents