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LEI-LUNG TSAI

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  • Yilan County, TW
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Patents Grantslast 30 patents

  • Information Patent Grant

    Membrane switch
    • Patent number 12,131,876
    • Issue date Oct 29, 2024
    • Primax Electronics Ltd.
    • Lei-Lung Tsai
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Keyboard device and key structure thereof
    • Patent number 11,887,792
    • Issue date Jan 30, 2024
    • Primax Electronics Ltd.
    • Che-An Li
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Keycap, method of manufacturing the same and key structure
    • Patent number 11,624,867
    • Issue date Apr 11, 2023
    • Primax Electronics Ltd.
    • Che-An Li
    • G02 - OPTICS
  • Information Patent Grant

    Membrane circuit structure
    • Patent number 11,626,259
    • Issue date Apr 11, 2023
    • Primax Electronics Ltd.
    • Lei-Lung Tsai
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Key structure
    • Patent number 11,610,745
    • Issue date Mar 21, 2023
    • Primax Electronics Ltd.
    • Sheng-Fan Chang
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Key structure
    • Patent number 11,574,780
    • Issue date Feb 7, 2023
    • Primax Electronics Ltd.
    • Lei-Lung Tsai
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Key structure
    • Patent number 11,456,128
    • Issue date Sep 27, 2022
    • Primax Electronics Ltd.
    • Chia-Wei Chang
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Keyboard device and key structure thereof
    • Patent number 11,430,620
    • Issue date Aug 30, 2022
    • Primax Electronics Ltd.
    • Chun-Yuan Liu
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Key structure
    • Patent number 11,342,133
    • Issue date May 24, 2022
    • Primax Electronics Ltd.
    • Sheng-Fan Chang
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Key structure and rubber dome thereof
    • Patent number 11,289,283
    • Issue date Mar 29, 2022
    • Primax Electronics Ltd.
    • Chia-Wei Chang
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Key structure
    • Patent number 11,289,281
    • Issue date Mar 29, 2022
    • Primax Electronics Ltd.
    • Chia-Wei Chang
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Keyboard device
    • Patent number 11,177,091
    • Issue date Nov 16, 2021
    • Primax Electronics Ltd.
    • Lei-Lung Tsai
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Luminous keyboard and backlight module thereof
    • Patent number 11,175,444
    • Issue date Nov 16, 2021
    • Primax Electronics Ltd.
    • Chin-Sung Pan
    • F21 - LIGHTING
  • Information Patent Grant

    Key structure
    • Patent number 11,177,083
    • Issue date Nov 16, 2021
    • Primax Electronics Ltd.
    • Ming-Han Wu
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Keyboard device and key structure thereof
    • Patent number 11,177,092
    • Issue date Nov 16, 2021
    • Primax Electronics Ltd.
    • Chien-Hung Liu
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Keyboard device and key structure thereof
    • Patent number 11,145,474
    • Issue date Oct 12, 2021
    • Primax Electronics Ltd.
    • Chin-Sung Pan
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Keyboard device
    • Patent number 11,120,956
    • Issue date Sep 14, 2021
    • Primax Electronics Ltd.
    • Chia-Wei Chang
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Keyboard device
    • Patent number 11,011,330
    • Issue date May 18, 2021
    • Primax Electronics Ltd.
    • Yi-Shu Lee
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Keyboard device
    • Patent number 10,903,024
    • Issue date Jan 26, 2021
    • Primax Electronics Ltd.
    • Chun-Yuan Liu
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Key structure
    • Patent number 10,777,371
    • Issue date Sep 15, 2020
    • Primax Electronics Ltd.
    • Lei-Lung Tsai
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Membrane circuit board and keyboard device with same
    • Patent number 10,755,873
    • Issue date Aug 25, 2020
    • Primax Electronics Ltd.
    • Bo-An Chen
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Luminous keyboard having translucent light diffusing rubber domes
    • Patent number 10,600,591
    • Issue date Mar 24, 2020
    • Primax Electronics Ltd.
    • Ying-Te Chiang
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Keyboard device
    • Patent number 10,509,482
    • Issue date Dec 17, 2019
    • Primax Electronics Ltd.
    • Lei-Lung Tsai
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Luminous keyboard
    • Patent number 10,410,807
    • Issue date Sep 10, 2019
    • Primax Electronics Ltd.
    • Lei-Lung Tsai
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Keyboard device
    • Patent number 10,403,452
    • Issue date Sep 3, 2019
    • Primax Electronics Ltd.
    • Yi-Shu Lee
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Luminous keyboard
    • Patent number 10,312,035
    • Issue date Jun 4, 2019
    • Primax Electronics Ltd.
    • Ying-Te Chiang
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Mechanical key structure
    • Patent number 10,242,819
    • Issue date Mar 26, 2019
    • Primax Electronics Ltd.
    • Chia-Feng Lee
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Luminous keyboard
    • Patent number 10,236,142
    • Issue date Mar 19, 2019
    • Primax Electronics Ltd.
    • Lei-Lung Tsai
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Key structure
    • Patent number 10,170,254
    • Issue date Jan 1, 2019
    • Primax Electronics Ltd.
    • Lei-Lung Tsai
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Keyboard structure with electrostatic discharge protection
    • Patent number 10,153,104
    • Issue date Dec 11, 2018
    • Primax Electronics Ltd.
    • Lei-Lung Tsai
    • H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

  • Information Patent Application

    KEYCAP
    • Publication number 20240242903
    • Publication date Jul 18, 2024
    • Primax Electronics Ltd.
    • Lei-Lung Tsai
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    KEYCAP
    • Publication number 20240242902
    • Publication date Jul 18, 2024
    • Primax Electronics Ltd.
    • Lei-Lung Tsai
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    FORCE-SENSITIVE KEY MODULE AND FORCE-SENSITIVE SWITCH STRUCTURE THE...
    • Publication number 20240177949
    • Publication date May 30, 2024
    • Primax Electronics Ltd.
    • Che-An Li
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    MEMBRANE SWITCH
    • Publication number 20240170236
    • Publication date May 23, 2024
    • Primax Electronics Ltd.
    • Lei-Lung TSAI
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    MANUFACTURING METHOD OF MEMBRANE CIRCUIT BOARD
    • Publication number 20240015892
    • Publication date Jan 11, 2024
    • Primax Electronics Ltd.
    • Yi-Te Chou
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    KEY STRUCTURE
    • Publication number 20230014686
    • Publication date Jan 19, 2023
    • Primax Electronics Ltd.
    • Lei-Lung Tsai
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    KEY STRUCTURE
    • Publication number 20220415592
    • Publication date Dec 29, 2022
    • Primax Electronics Ltd.
    • Lei-Lung TSAI
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    KEYBOARD DEVICE AND KEY STRUCTURE THEREOF
    • Publication number 20220399171
    • Publication date Dec 15, 2022
    • Primax Electronics Ltd.
    • Che-An Li
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    KEY STRUCTURE AND ELASTIC CONDUCTION ELEMENT THEREOF
    • Publication number 20220199338
    • Publication date Jun 23, 2022
    • Primax Electronics Ltd.
    • Chia-Wei Chang
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    KEYBOARD DEVICE
    • Publication number 20210098211
    • Publication date Apr 1, 2021
    • Primax Electronics Ltd.
    • YI-SHU LEE
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    MEMBRANE CIRCUIT BOARD AND KEYBOARD DEVICE WITH SAME
    • Publication number 20200243277
    • Publication date Jul 30, 2020
    • Primax Electronics Ltd.
    • Bo-An Chen
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    KEYBOARD DEVICE
    • Publication number 20190227639
    • Publication date Jul 25, 2019
    • Primax Electronics Ltd.
    • Bo-An Chen
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    LUMINOUS KEYBOARD
    • Publication number 20190172662
    • Publication date Jun 6, 2019
    • Primax Electronics Ltd.
    • Ying-Te Chiang
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    LUMINOUS KEYBOARD
    • Publication number 20190115171
    • Publication date Apr 18, 2019
    • PRIMAX ELECTRONICS LTD.
    • Ying-Te Chiang
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    MECHANICAL KEY STRUCTURE
    • Publication number 20190096605
    • Publication date Mar 28, 2019
    • Primax Electronics Ltd.
    • CHIA-FENG LEE
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    KEYBOARD AND MEMBRANE SWITCH CIRCUIT
    • Publication number 20190088425
    • Publication date Mar 21, 2019
    • Primax Electronics Ltd.
    • Lei-Lung TSAI
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    LUMINOUS KEYBOARD
    • Publication number 20190027326
    • Publication date Jan 24, 2019
    • Primax Electronics Ltd.
    • Lei-Lung Tsai
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    LUMINOUS KEYBOARD
    • Publication number 20190013164
    • Publication date Jan 10, 2019
    • Primax Electronics Ltd.
    • Lei-Lung TSAI
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    KEY STRUCTURE
    • Publication number 20180144885
    • Publication date May 24, 2018
    • Primax Electronics Ltd.
    • YI-SHU LEE
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    KEYBOARD
    • Publication number 20180143698
    • Publication date May 24, 2018
    • Primax Electronics Ltd.
    • Yi-Shu Lee
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    KEY STRUCTURE
    • Publication number 20180075987
    • Publication date Mar 15, 2018
    • Primax Electronics Ltd.
    • LEI-LUNG TSAI
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    KEYBOARD DEVICE
    • Publication number 20170243708
    • Publication date Aug 24, 2017
    • PRIMAX ELECTRONICS LTD.
    • LEI-LUNG TSAI
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    KEYCAP AND PRESS KEY STRUCTURE USING THE SAME
    • Publication number 20100006412
    • Publication date Jan 14, 2010
    • Darfon Electronics Corp.
    • YI-CHEN WANG
    • H01 - BASIC ELECTRIC ELEMENTS