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Takashi Akiyama

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  • Saitama-ken, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Thrust measuring device
    • Patent number 11,231,336
    • Issue date Jan 25, 2022
    • Mitsubishi Electric Corporation
    • Yoshihiro Hosokawa
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    LED drive circuit
    • Patent number 10,433,381
    • Issue date Oct 1, 2019
    • Citizen Watch Co., Ltd
    • Keisuke Sakai
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Grant

    LED drive circuit
    • Patent number 10,182,486
    • Issue date Jan 15, 2019
    • Citizen Watch Co., Ltd.
    • Takashi Akiyama
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    LED drive circuit including a plurality of LEDs connected in series
    • Patent number 10,044,289
    • Issue date Aug 7, 2018
    • Citizen Watch Co., Ltd.
    • Takashi Akiyama
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    LED module
    • Patent number 10,026,877
    • Issue date Jul 17, 2018
    • Citizen Electronics Co., Ltd.
    • Takashi Akiyama
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Packaging of LED chips and driver circuit on the same substrate
    • Patent number 9,887,185
    • Issue date Feb 6, 2018
    • Citizen Watch Co., Ltd.
    • Takashi Akiyama
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    LED driver circuit
    • Patent number 9,860,944
    • Issue date Jan 2, 2018
    • Citizen Electronics Co., Ltd.
    • Takashi Akiyama
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    LED illumination device
    • Patent number 9,854,631
    • Issue date Dec 26, 2017
    • Citizen Electronics Co., Ltd.
    • Takashi Akiyama
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Light-emitting device and lighting appliance including the light-em...
    • Patent number 9,841,171
    • Issue date Dec 12, 2017
    • Citizen Electronics Co., Ltd.
    • Tatsuro Yamada
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Grant

    Light-emitting diode
    • Patent number D789309
    • Issue date Jun 13, 2017
    • Citizen Electronics Co., Ltd.
    • Takashi Akiyama
    • D13 - Equipment for production, distribution, or transformation of energy
  • Information Patent Grant

    Light-emitting diode
    • Patent number D788721
    • Issue date Jun 6, 2017
    • Citizen Electronics Co., Ltd.
    • Takashi Akiyama
    • D13 - Equipment for production, distribution, or transformation of energy
  • Information Patent Grant

    Light-emitting diode
    • Patent number D788720
    • Issue date Jun 6, 2017
    • Citizen Electronics Co., Ltd.
    • Takashi Akiyama
    • D13 - Equipment for production, distribution, or transformation of energy
  • Information Patent Grant

    LED lamp
    • Patent number 9,574,756
    • Issue date Feb 21, 2017
    • Citizen Watch Co., Ltd.
    • Takashi Akiyama
    • F21 - LIGHTING
  • Information Patent Grant

    LED module
    • Patent number 9,512,968
    • Issue date Dec 6, 2016
    • Citizen Holdings Co., Ltd.
    • Ryo Tamura
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    LED drive circuit
    • Patent number 9,510,407
    • Issue date Nov 29, 2016
    • Citizen Holdings Co., Ltd.
    • Takashi Akiyama
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    LED module
    • Patent number 9,508,910
    • Issue date Nov 29, 2016
    • Citizen Holdings Co., Ltd.
    • Takashi Akiyama
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    LED lighting apparatus
    • Patent number 9,485,830
    • Issue date Nov 1, 2016
    • Citizen Holdings Co., Ltd.
    • Keisuke Sakai
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Light-emitting diode
    • Patent number D766196
    • Issue date Sep 13, 2016
    • Citizen Electronics Co., Ltd.
    • Takashi Akiyama
    • D13 - Equipment for production, distribution, or transformation of energy
  • Information Patent Grant

    Light-emitting diode
    • Patent number D762182
    • Issue date Jul 26, 2016
    • Citizen Electronics Co., Ltd.
    • Takashi Akiyama
    • D13 - Equipment for production, distribution, or transformation of energy
  • Information Patent Grant

    LED lighting device
    • Patent number 9,380,657
    • Issue date Jun 28, 2016
    • Citizen Holdings Co., Ltd.
    • Takashi Akiyama
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    LED drive circuit
    • Patent number 9,277,615
    • Issue date Mar 1, 2016
    • Citizen Holdings Co., Ltd.
    • Keisuke Sakai
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    LED lighting circuit, LED illumination device, and LED illumination...
    • Patent number 9,226,364
    • Issue date Dec 29, 2015
    • Citizen Holdings Co., Ltd.
    • Hisashi Fukasawa
    • F21 - LIGHTING
  • Information Patent Grant

    Lighting device
    • Patent number 9,200,795
    • Issue date Dec 1, 2015
    • Citizen Holdings Co., Ltd.
    • Ryo Tamura
    • F21 - LIGHTING
  • Information Patent Grant

    LED drive circuit
    • Patent number 9,167,637
    • Issue date Oct 20, 2015
    • Citizen Holdings Co., Ltd.
    • Takashi Akiyama
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Lighting device and method manufacturing holder of lighting device
    • Patent number 9,052,104
    • Issue date Jun 9, 2015
    • Citizen Electronics Co., Ltd.
    • Masashi Watanabe
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    LED lighting device
    • Patent number 9,006,984
    • Issue date Apr 14, 2015
    • Citizen Holdings Co., Ltd.
    • Takashi Akiyama
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Field sequential color display device with red, green, blue and whi...
    • Patent number 8,629,822
    • Issue date Jan 14, 2014
    • Citizen Holdings Co., Ltd.
    • Takashi Akiyama
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    Lamp
    • Patent number D696798
    • Issue date Dec 31, 2013
    • Citizen Electronics Co., Ltd.
    • Watanabe Masashi
    • D26 - Lighting
  • Information Patent Grant

    LED drive circuit
    • Patent number 8,547,027
    • Issue date Oct 1, 2013
    • Citizen Holdings Co., Ltd.
    • Takashi Akiyama
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Color display device and portable electronic appliance using the same
    • Patent number 8,395,602
    • Issue date Mar 12, 2013
    • Citizen Holdings Co., Ltd.
    • Takashi Akiyama
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

  • Information Patent Application

    VCSEL MODULE
    • Publication number 20240243546
    • Publication date Jul 18, 2024
    • Citizen Electronics Co., Ltd.
    • Takashi AKIYAMA
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    INLAY SUBSTRATE AND LIGHT EMITTING DEVICE USING INLAY SUBSTRATE
    • Publication number 20220059744
    • Publication date Feb 24, 2022
    • Citizen Electronics Co., Ltd.
    • Takashi AKIYAMA
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    THRUST MEASURING DEVICE
    • Publication number 20210215558
    • Publication date Jul 15, 2021
    • MITSUBISHI ELECTRIC CORPORATION
    • Yoshihiro HOSOKAWA
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    LED DRIVE CIRCUIT
    • Publication number 20180288843
    • Publication date Oct 4, 2018
    • CITIZEN WATCH CO.,LTD.
    • Keisuke SAKAI
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    LED DRIVE CIRCUIT
    • Publication number 20180069483
    • Publication date Mar 8, 2018
    • CITIZEN WATCH CO., LTD
    • Takashi Akiyama
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    LED DRIVER CIRCUIT
    • Publication number 20170290111
    • Publication date Oct 5, 2017
    • Citizen Electronics Co., Ltd.
    • Takashi Akiyama
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    LED DRIVE CIRCUIT
    • Publication number 20170280532
    • Publication date Sep 28, 2017
    • Citizen Watch Co., Ltd.
    • Takashi Akiyama
    • F21 - LIGHTING
  • Information Patent Application

    LED MODULE
    • Publication number 20170236982
    • Publication date Aug 17, 2017
    • Citizen Watch Co., Ltd.
    • Takashi Akiyama
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    LED ILLUMINATION DEVICE
    • Publication number 20170086265
    • Publication date Mar 23, 2017
    • Citizen Electronics Co., Ltd.
    • Takashi Akiyama
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    LED MODULE
    • Publication number 20170047314
    • Publication date Feb 16, 2017
    • Citizen Electronics Co., Ltd.
    • Takashi AKIYAMA
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    LIGHT-EMITTING DEVICE AND LIGHTING APPLIANCE INCLUDING THE LIGHT-EM...
    • Publication number 20160319997
    • Publication date Nov 3, 2016
    • CITIZEN ELECTRONICS CO., LTD.
    • Tatsuro YAMADA
    • F21 - LIGHTING
  • Information Patent Application

    LED LAMP
    • Publication number 20160265727
    • Publication date Sep 15, 2016
    • CITIZEN HOLDINGS CO., LTD.
    • Takashi Akiyama
    • F21 - LIGHTING
  • Information Patent Application

    LED DRIVE CIRCUIT
    • Publication number 20160113077
    • Publication date Apr 21, 2016
    • CITIZEN HOLDINGS CO., LTD.
    • Takashi Akiyama
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    LED DRIVE CIRCUIT
    • Publication number 20150382420
    • Publication date Dec 31, 2015
    • CITIZEN HOLDINGS CO., LTD.
    • Keisuke Sakai
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    LED MODULE
    • Publication number 20150124455
    • Publication date May 7, 2015
    • CITIZEN HOLDINGS CO., LTD.
    • Ryo Tamura
    • F21 - LIGHTING
  • Information Patent Application

    LED DRIVE CIRCUIT
    • Publication number 20150115810
    • Publication date Apr 30, 2015
    • CITIZEN HOLDINGS CO., LTD.
    • Takashi Akiyama
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    LED MODULE
    • Publication number 20140367710
    • Publication date Dec 18, 2014
    • Takashi Akiyama
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    LED LIGHTING DEVICE
    • Publication number 20140361695
    • Publication date Dec 11, 2014
    • Takashi Akiyama
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    LED LIGHTING APPARATUS
    • Publication number 20140197741
    • Publication date Jul 17, 2014
    • Citizen Electronics Co., Ltd.
    • Keisuke Sakai
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    LIGHTING DEVICE
    • Publication number 20130334974
    • Publication date Dec 19, 2013
    • Citizen Electronics Co., Ltd.
    • Ryo TAMURA
    • F21 - LIGHTING
  • Information Patent Application

    LIGHTING DEVICE AND METHOD MANUFACTURING HOLDER OF LIGHTING DEVICE
    • Publication number 20130294085
    • Publication date Nov 7, 2013
    • Masashi Watanabe
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Application

    LED LIGHTING DEVICE
    • Publication number 20130234609
    • Publication date Sep 12, 2013
    • Citizen Electronics Co., Ltd.
    • Takashi Akiyama
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    LED LIGHTING CIRCUIT, LED ILLUMINATION DEVICE, AND LED ILLUMINATION...
    • Publication number 20130221864
    • Publication date Aug 29, 2013
    • Citizen Electronics Co., Ltd.
    • Hisashi Fukasawa
    • F21 - LIGHTING
  • Information Patent Application

    LED DRIVE CIRCUIT
    • Publication number 20120068616
    • Publication date Mar 22, 2012
    • Takashi Akiyama
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    FIXING ASSEMBLY
    • Publication number 20100072337
    • Publication date Mar 25, 2010
    • MAX Co., LTD.
    • Takashi AKIYAMA
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    DISPLAY APPARATUS
    • Publication number 20090135334
    • Publication date May 28, 2009
    • Takashi Akiyama
    • G02 - OPTICS
  • Information Patent Application

    LIQUID CRYSTAL DISPLAY DEVICE
    • Publication number 20090002331
    • Publication date Jan 1, 2009
    • CITIZEN HOLDINGS CO., LTD.
    • Kiyoshi Kamiya
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    Liquid Crystal Display Device
    • Publication number 20080284926
    • Publication date Nov 20, 2008
    • Citizen Watch Co., Ltd.
    • Takashi Akiyama
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Application

    Liquid crystal display apparatus
    • Publication number 20080273145
    • Publication date Nov 6, 2008
    • Takashi Akiyama
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Application

    LIQUID CRYSTAL DEVICE
    • Publication number 20080238883
    • Publication date Oct 2, 2008
    • Takashi Akiyama
    • G06 - COMPUTING CALCULATING COUNTING