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Yoshinori Fujikawa

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Patents Grantslast 30 patents

  • Information Patent Grant

    R-T-B based permanent magnet
    • Patent number 11,657,934
    • Issue date May 23, 2023
    • TDK Corporation
    • Yuki Nagamine
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Samarium-iron-nitrogen magnet powder and method for manufacturing same
    • Patent number 11,361,888
    • Issue date Jun 14, 2022
    • National Institute of Advanced Industrial Science and Technology
    • Shusuke Okada
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Grant

    R-T-B based permanent magnet
    • Patent number 11,152,142
    • Issue date Oct 19, 2021
    • TDK Corporation
    • Yuki Nagamine
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Rare earth magnet
    • Patent number 10,991,493
    • Issue date Apr 27, 2021
    • TDK Corporation
    • Wakako Okawa
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Grant

    Rare earth magnet
    • Patent number 10,984,929
    • Issue date Apr 20, 2021
    • TDK Corporation
    • Wakako Okawa
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Grant

    R-T-B based sintered magnet
    • Patent number 10,748,686
    • Issue date Aug 18, 2020
    • TDK Corporation
    • Yoshinori Fujikawa
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    R-T-B based sintered magnet
    • Patent number 10,748,685
    • Issue date Aug 18, 2020
    • TDK Corporation
    • Yoshinori Fujikawa
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    R-T-B based sintered magnet
    • Patent number 10,734,143
    • Issue date Aug 4, 2020
    • TDK Corporation
    • Yoshinori Fujikawa
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Rare earth magnet
    • Patent number 10,726,980
    • Issue date Jul 28, 2020
    • TDK Corporation
    • Wakako Okawa
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Grant

    Rare earth based magnet
    • Patent number 10,546,672
    • Issue date Jan 28, 2020
    • TDK Corporation
    • Eiji Kato
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Rare earth permanent magnet
    • Patent number 10,453,595
    • Issue date Oct 22, 2019
    • TDK Corporation
    • Tetsuya Hidaka
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Rare earth based magnet
    • Patent number 10,256,016
    • Issue date Apr 9, 2019
    • TDK Corporation
    • Yoshinori Fujikawa
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Alloy for R-T-B based sintered magnet and R-T-B based sintered magnet
    • Patent number 10,242,777
    • Issue date Mar 26, 2019
    • TDK Corporation
    • Makoto Iwasaki
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Rare earth based magnet
    • Patent number 10,109,402
    • Issue date Oct 23, 2018
    • TDK Corporation
    • Eiji Kato
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Rare earth based magnet
    • Patent number 10,096,412
    • Issue date Oct 9, 2018
    • TDK Corporation
    • Eiji Kato
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Rare earth based magnet
    • Patent number 10,090,087
    • Issue date Oct 2, 2018
    • TDK Corporation
    • Yoshinori Fujikawa
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Rare earth based magnet
    • Patent number 10,083,783
    • Issue date Sep 25, 2018
    • TDK Corporation
    • Yoshinori Fujikawa
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Rare earth based magnet
    • Patent number 10,020,099
    • Issue date Jul 10, 2018
    • TDK Corporation
    • Eiji Kato
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Sintered magnet, motor, automobile, and method for producing sinter...
    • Patent number 9,548,157
    • Issue date Jan 17, 2017
    • TDK Corporation
    • Makoto Iwasaki
    • C21 - METALLURGY OF IRON
  • Information Patent Grant

    R-T-B based sintered magnet
    • Patent number 9,548,148
    • Issue date Jan 17, 2017
    • TDK Corporation
    • Ryota Kunieda
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Rare earth based magnet
    • Patent number 9,548,149
    • Issue date Jan 17, 2017
    • TDK Corporation
    • Eiji Kato
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Magnetic body
    • Patent number 8,981,888
    • Issue date Mar 17, 2015
    • TDK Corporation
    • Kenichi Suzuki
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Active material with a surface-modified layer covering a metal oxid...
    • Patent number 8,715,854
    • Issue date May 6, 2014
    • TDK Corporation
    • Hisashi Suzuki
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Grant

    Ferrite magnetic material
    • Patent number 7,919,007
    • Issue date Apr 5, 2011
    • TDK Corporation
    • Yoshihiko Minachi
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Grant

    Method of producing a powder, powder, and multilayered ceramic capa...
    • Patent number 7,744,954
    • Issue date Jun 29, 2010
    • TDK Corporation
    • Yoshinori Fujikawa
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Electronic device
    • Patent number 7,528,088
    • Issue date May 5, 2009
    • TDK Corporation
    • Yuji Umeda
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    R-T-B system rare earth permanent magnet
    • Patent number 7,314,531
    • Issue date Jan 1, 2008
    • TDK Corporation
    • Chikara Ishizaka
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    R-T-B system rare earth permanent magnet
    • Patent number 7,311,788
    • Issue date Dec 25, 2007
    • TDK Corporation
    • Gouichi Nishizawa
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Dielectric ceramic composition and electronic device
    • Patent number 6,699,809
    • Issue date Mar 2, 2004
    • TDK Corporation
    • Yoshinori Fujikawa
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Dielectric ceramic composition and electronic device
    • Patent number 6,559,084
    • Issue date May 6, 2003
    • TDK Corporation
    • Yoshinori Fujikawa
    • H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

  • Information Patent Application

    R-T-B-BASED PERMANENT MAGNET AND METHOD FOR PRODUCING SAME, MOTOR,...
    • Publication number 20230118859
    • Publication date Apr 20, 2023
    • TDK Corporation
    • Yoshinori FUJIKAWA
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Application

    R-T-B BASED PERMANENT MAGNET
    • Publication number 20230025223
    • Publication date Jan 26, 2023
    • TDK Corporation
    • Yoshinori FUJIKAWA
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    RARE-EARTH-BASED MAGNET POWDER, BONDED MAGNET, BONDED MAGNET COMPOU...
    • Publication number 20220293310
    • Publication date Sep 15, 2022
    • TDK Corporation
    • Ikuya KOKAWA
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    R-T-B BASED PERMANENT MAGNET
    • Publication number 20220199301
    • Publication date Jun 23, 2022
    • TDK Corporation
    • Kenichi SUZUKI
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    R-T-B BASED PERMANENT MAGNET AND METHOD FOR MANUFACTURING SAME
    • Publication number 20220148772
    • Publication date May 12, 2022
    • TDK Corporation
    • Yoshinori FUJIKAWA
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    SAMARIUM-IRON-NITROGEN MAGNET POWDER AND METHOD FOR MANUFACTURING SAME
    • Publication number 20200118722
    • Publication date Apr 16, 2020
    • NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    • Shusuke OKADA
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Application

    R-T-B BASED PERMANENT MAGNET
    • Publication number 20190304640
    • Publication date Oct 3, 2019
    • TDK Corporation
    • Yuki NAGAMINE
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    R-T-B BASED PERMANENT MAGNET
    • Publication number 20190304638
    • Publication date Oct 3, 2019
    • TDK Corporation
    • Yuki NAGAMINE
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    ALLOY FOR R-T-B BASED SINTERED MAGNET AND R-T-B BASED SINTERED MAGNET
    • Publication number 20190074114
    • Publication date Mar 7, 2019
    • TDK Corporation
    • Makoto IWASAKI
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    R-T-B BASED SINTERED MAGNET
    • Publication number 20180301257
    • Publication date Oct 18, 2018
    • TDK Corporation
    • Yoshinori FUJIKAWA
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    R-T-B BASED SINTERED MAGNET
    • Publication number 20180301256
    • Publication date Oct 18, 2018
    • TDK Corporation
    • Yoshinori FUJIKAWA
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    R-T-B BASED SINTERED MAGNET
    • Publication number 20180286545
    • Publication date Oct 4, 2018
    • TDK Corporation
    • Yoshinori FUJIKAWA
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    RARE EARTH MAGNET
    • Publication number 20180114616
    • Publication date Apr 26, 2018
    • TDK Corporation
    • Wakako OKAWA
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    RARE EARTH MAGNET
    • Publication number 20180108463
    • Publication date Apr 19, 2018
    • TDK Corporation
    • Wakako OKAWA
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    RARE EARTH MAGNET
    • Publication number 20180082772
    • Publication date Mar 22, 2018
    • TDK Corporation
    • Wakako OKAWA
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    RARE EARTH PERMANENT MAGNET
    • Publication number 20170250014
    • Publication date Aug 31, 2017
    • TDK Corporation
    • Tetsuya HIDAKA
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    ALLOY FOR R-T-B BASED SINTERED MAGNET AND R-T-B BASED SINTERED MAGNET
    • Publication number 20170221616
    • Publication date Aug 3, 2017
    • TDK Corporation
    • Makoto IWASAKI
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    RARE EARTH BASED MAGNET
    • Publication number 20150310972
    • Publication date Oct 29, 2015
    • TDK Corporation
    • Eiji KATO
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    RARE EARTH BASED MAGNET
    • Publication number 20150270041
    • Publication date Sep 24, 2015
    • TDK Corporation
    • Eiji KATO
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    RARE EARTH BASED MAGNET
    • Publication number 20150179319
    • Publication date Jun 25, 2015
    • TDK Corporation
    • Yoshinori FUJIKAWA
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    RARE EARTH BASED MAGNET
    • Publication number 20150179317
    • Publication date Jun 25, 2015
    • TDK Corporation
    • Yoshinori FUJIKAWA
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    RARE EARTH BASED MAGNET
    • Publication number 20150179318
    • Publication date Jun 25, 2015
    • TDK Corporation
    • Yoshinori FUJIKAWA
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    RARE EARTH BASED MAGNET
    • Publication number 20140292453
    • Publication date Oct 2, 2014
    • Eiji KATO
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    RARE EARTH BASED MAGNET
    • Publication number 20140290803
    • Publication date Oct 2, 2014
    • Eiji KATO
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    RARE EARTH BASED MAGNET
    • Publication number 20140292454
    • Publication date Oct 2, 2014
    • Eiji KATO
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    R-T-B BASED SINTERED MAGNET
    • Publication number 20140283649
    • Publication date Sep 25, 2014
    • TDK Corporation
    • Ryota Kunieda
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    MAGNETIC BODY
    • Publication number 20130271249
    • Publication date Oct 17, 2013
    • TDK CORPORATION
    • Kenichi Suzuki
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    SINTERED MAGNET, MOTOR, AUTOMOBILE, AND METHOD FOR PRODUCING SINTER...
    • Publication number 20130009503
    • Publication date Jan 10, 2013
    • TDK Corporation
    • Makoto Iwasaki
    • C21 - METALLURGY OF IRON
  • Information Patent Application

    Production method of dielectric particles
    • Publication number 20090264276
    • Publication date Oct 22, 2009
    • TDK Corporation
    • Tomohiro Yamashita
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Application

    Ceramic material powder, method of production thereof, dielectric c...
    • Publication number 20080220964
    • Publication date Sep 11, 2008
    • TDK Corporation
    • Yoshinori Fujikawa
    • B32 - LAYERED PRODUCTS