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Electrets

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  • H01G7/02
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HELECTRICITY H01Electric elements H01GCAPACITORS CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE H01G7/00Capacitors in which the capacitance is varied by non-mechanical means Processes of their manufacture

Current Industry

H01G7/02Electrets
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Power generator having an electret for harvesting energy
    • Patent number 12,191,088
    • Issue date Jan 7, 2025
    • Denso Corporation
    • Yoshihiro Kozawa
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Power generator
    • Patent number 12,119,184
    • Issue date Oct 15, 2024
    • Denso Corporation
    • Yoshihiro Kozawa
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Deep trench capacitor including a compact contact region and method...
    • Patent number 12,009,405
    • Issue date Jun 11, 2024
    • Taiwan Semiconductor Manufacturing Company Limited
    • Jen-Yuan Chang
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Electret
    • Patent number 11,917,919
    • Issue date Feb 27, 2024
    • Denso Corporation
    • Noriyuki Matsushita
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Electret
    • Patent number 11,915,883
    • Issue date Feb 27, 2024
    • Denso Corporation
    • Noriyuki Matsushita
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Electret sheet and piezoelectric sensor
    • Patent number 11,908,629
    • Issue date Feb 20, 2024
    • Sekisui Chemical Co., Ltd.
    • Tetsuhiro Kato
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Electrostatic motor
    • Patent number 11,863,086
    • Issue date Jan 2, 2024
    • The Charles Stark Draper Laboratory, Inc.
    • Louis Beryl Kratchman
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Fully degradable non-woven fabric produced by melt-blow extrusion a...
    • Patent number 11,840,783
    • Issue date Dec 12, 2023
    • CHINA YUNHONG HOLDINGS CO., LTD.
    • Jingren He
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Electret sheet
    • Patent number 11,688,563
    • Issue date Jun 27, 2023
    • Sekisui Chemical Co., Ltd.
    • Tetsuhiro Kato
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Timepiece
    • Patent number 11,650,548
    • Issue date May 16, 2023
    • Citizen Watch Co., Ltd.
    • Kenji Shimoda
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Element and method for manufacturing element
    • Patent number 11,646,677
    • Issue date May 9, 2023
    • Ricoh Company, Ltd.
    • Tomoaki Sugawara
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Electret
    • Patent number 11,558,694
    • Issue date Jan 17, 2023
    • Denso Corporation
    • Yoshihiro Kozawa
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Vibrational energy harvester element
    • Patent number 11,552,579
    • Issue date Jan 10, 2023
    • The University of Tokyo
    • Hiroshi Toshiyoshi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    High energy density capacitor system and method
    • Patent number 11,508,533
    • Issue date Nov 22, 2022
    • Flash Power Capacitors, LLC
    • Edward L. Davis
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Dielectric composition and electronic component
    • Patent number 11,472,742
    • Issue date Oct 18, 2022
    • TDK Corporation
    • Toshihiro Iguchi
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Grant

    System and method for clamping a work piece
    • Patent number 11,282,732
    • Issue date Mar 22, 2022
    • Trek, Inc.
    • Toshio Uehara
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Piezoelectric element and musical instrument
    • Patent number 11,176,918
    • Issue date Nov 16, 2021
    • Yupo Corporation
    • Hiroshi Koike
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • 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

    Electrically conductive electret and associated electret-based powe...
    • Patent number 11,081,285
    • Issue date Aug 3, 2021
    • Deborah Duen Ling Chung
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Electret sheet
    • Patent number 11,024,463
    • Issue date Jun 1, 2021
    • Sekisui Chemical Co., Ltd.
    • Tetsuhiro Kato
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • 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

    Electret sheet
    • Patent number 10,978,252
    • Issue date Apr 13, 2021
    • Sekisui Chemical Co., Ltd.
    • Tetsuhiro Kato
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Electrostatic motor
    • Patent number 10,958,191
    • Issue date Mar 23, 2021
    • The Charles Stark Draper Laboratory, Inc.
    • Louis Beryl Kratchman
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Electret element, electromechanical converter and method for manufa...
    • Patent number 10,833,607
    • Issue date Nov 10, 2020
    • The University of Tokyo
    • Hiroyuki Fujita
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Electret energy storage system
    • Patent number 10,672,564
    • Issue date Jun 2, 2020
    • Kirk W. Rosener
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Semiconductor device
    • Patent number 10,666,166
    • Issue date May 26, 2020
    • Denso Corporation
    • Kenta Goda
    • B81 - MICRO-STRUCTURAL TECHNOLOGY
  • 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

    Lift printing of multi-composition material structures
    • Patent number 10,629,442
    • Issue date Apr 21, 2020
    • Orbotech Ltd.
    • Michael Zenou
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    System and method for electret surface potential restoration by a d...
    • Patent number 10,522,295
    • Issue date Dec 31, 2019
    • ADC TECH INTERNATIONAL LTD.
    • William S. H. Cheung
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • 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

Patents Applicationslast 30 patents

  • Information Patent Application

    DEEP TRENCH CAPACITOR INCLUDING A COMPACT CONTACT REGION AND METHOD...
    • Publication number 20240304700
    • Publication date Sep 12, 2024
    • Taiwan Semiconductor Manufacturing Company Limited
    • Jen-Yuan CHANG
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    ELECTROLYTIC DIRECT ENERGY CONVERTER (EDEC)
    • Publication number 20240274372
    • Publication date Aug 15, 2024
    • FRANK E GORDON
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    DIELECTRIC CAPACITOR FORMED OF A DIELECTRIC-COATED ELECTRICALLY CON...
    • Publication number 20240079183
    • Publication date Mar 7, 2024
    • U.S. Army DEVCOM, Army Research Laboratory
    • Brendan M. Hanrahan
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    STRUCTURE EXHIBITING A FLEXOELECTRIC EFFECT
    • Publication number 20230386755
    • Publication date Nov 30, 2023
    • Murata Manufacturing Co., Ltd.
    • Takashi TATEISHI
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Vibrational Energy Harvester Element
    • Publication number 20230098623
    • Publication date Mar 30, 2023
    • THE UNIVERSITY OF TOKYO
    • Hiroshi TOSHIYOSHI
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    DEEP TRENCH CAPACITOR INCLUDING A COMPACT CONTACT REGION AND METHOD...
    • Publication number 20230069774
    • Publication date Mar 2, 2023
    • Taiwan Semiconductor Manufacturing Company Limited
    • Jen-Yuan CHANG
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    POWER GENERATOR
    • Publication number 20220392711
    • Publication date Dec 8, 2022
    • DENSO CORPORATION
    • YOSHIHIRO KOZAWA
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    POWER GENERATOR
    • Publication number 20220384116
    • Publication date Dec 1, 2022
    • DENSO CORPORATION
    • YOSHIHIRO KOZAWA
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Electrostatic Device, Electrostatic Device Intermediate Body and Pr...
    • Publication number 20220324697
    • Publication date Oct 13, 2022
    • The University of Tokyo
    • Hiroshi Toshiyoshi
    • B81 - MICRO-STRUCTURAL TECHNOLOGY
  • Information Patent Application

    ENGINEERED DIELECTRIC META-MATERIALS
    • Publication number 20210343479
    • Publication date Nov 4, 2021
    • Drexel University
    • Zongquan Gu
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    METHODS OF SATURATING NONWOVEN FABRICS WITH LIQUID AND THE MAKING O...
    • Publication number 20210262134
    • Publication date Aug 26, 2021
    • University of Tennessee Research Foundation
    • Peter Ping-yi Tsai
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    ELECTRET SHEET AND PIEZOELECTRIC SENSOR
    • Publication number 20210257165
    • Publication date Aug 19, 2021
    • Sekisui Chemical Co., Ltd
    • Tetsuhiro KATO
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    ELECTRET SHEET
    • Publication number 20210249195
    • Publication date Aug 12, 2021
    • Sekisui Chemical Co., Ltd
    • Tetsuhiro KATO
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    DIELECTRIC COMPOSITION AND ELECTRONIC COMPONENT
    • Publication number 20210179494
    • Publication date Jun 17, 2021
    • TDK Corporation
    • Toshihiro IGUCHI
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Application

    Electrostatic Motor
    • Publication number 20210184599
    • Publication date Jun 17, 2021
    • The Charles Stark Draper Laboratory, Inc.
    • Louis Beryl Kratchman
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    ELECTRET
    • Publication number 20210183584
    • Publication date Jun 17, 2021
    • DENSO CORPORATION
    • Noriyuki Matsushita
    • C01 - INORGANIC CHEMISTRY
  • Information Patent Application

    Vibrational Energy Harvester Element
    • Publication number 20210119556
    • Publication date Apr 22, 2021
    • The University of Tokyo
    • Hiroshi TOSHIYOSHI
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    ELEMENT AND METHOD FOR MANUFACTURING ELEMENT
    • Publication number 20210111644
    • Publication date Apr 15, 2021
    • Tomoaki SUGAWARA
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Electrically conductive electret and associated electret-based powe...
    • Publication number 20210012969
    • Publication date Jan 14, 2021
    • Deborah Duen Ling Chung
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    TIMEPIECE
    • Publication number 20200293000
    • Publication date Sep 17, 2020
    • CITIZEN WATCH CO., LTD.
    • Kenji SHIMODA
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Electret Energy Storage System
    • Publication number 20200098525
    • Publication date Mar 26, 2020
    • Kirk W. Rosener
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    ELECTRET-TREATED SHEET AND FILTER
    • Publication number 20200009489
    • Publication date Jan 9, 2020
    • Yupo corporation
    • Yutaro SUGAMATA
    • B32 - LAYERED PRODUCTS
  • Information Patent Application

    PIEZOELECTRIC ELEMENT AND MUSICAL INSTRUMENT
    • Publication number 20190311702
    • Publication date Oct 10, 2019
    • Yupo corporation
    • Hiroshi KOIKE
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Electrostatic Motor
    • Publication number 20190253000
    • Publication date Aug 15, 2019
    • The Charles Stark Draper Laboratory, Inc.
    • Louis Beryl Kratchman
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    SEMICONDUCTOR DEVICE
    • Publication number 20190165695
    • Publication date May 30, 2019
    • DENSO CORPORATION
    • Kenta GODA
    • B81 - MICRO-STRUCTURAL TECHNOLOGY
  • Information Patent Application

    ELECTRET SHEET
    • Publication number 20190057816
    • Publication date Feb 21, 2019
    • Sekisui Chemical Co., Ltd
    • Tetsuhiro KATO
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    ELECTRICAL POWER GENERATOR
    • Publication number 20190044457
    • Publication date Feb 7, 2019
    • HENRIK HENRIKOVYCH SHUMINSKYI
    • C01 - INORGANIC CHEMISTRY
  • Information Patent Application

    ELECTRET SHEET
    • Publication number 20190043672
    • Publication date Feb 7, 2019
    • Sekisui Chemical Co., Ltd
    • Tetsuhiro KATO
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    ULTRA-HIGH CHARGE DENSITY ELECTRETS AND METHOD OF MAKING SAME
    • Publication number 20190013151
    • Publication date Jan 10, 2019
    • HONEYWELL INTERNATIONAL INC.
    • Steven Tin
    • B81 - MICRO-STRUCTURAL TECHNOLOGY
  • Information Patent Application

    Electret Element, Microphone Having Electret Element Mounted Therei...
    • Publication number 20190014419
    • Publication date Jan 10, 2019
    • National University Corporation Shizuoka University
    • Gen HASHIGUCHI
    • H01 - BASIC ELECTRIC ELEMENTS