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Liu-Bing Cai

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  • Taipei, TW
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Patents Grantslast 30 patents

  • Information Patent Grant

    Keyboard device
    • Patent number 11,557,445
    • Issue date Jan 17, 2023
    • Primax Electronics Ltd.
    • Liu-Bing Cai
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Membrane circuit board and manufacturing method thereof
    • Patent number 11,482,387
    • Issue date Oct 25, 2022
    • Primax Electronics Ltd.
    • Liu-Bing Cai
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Keyboard device and key structure thereof
    • Patent number 11,204,651
    • Issue date Dec 21, 2021
    • Primax Electronics Ltd.
    • Liu-Bing Cai
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Key structure
    • Patent number 11,094,479
    • Issue date Aug 17, 2021
    • Primax Electronics Ltd.
    • Xiao-Jun Chu
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Rotary switch structure
    • Patent number 10,903,028
    • Issue date Jan 26, 2021
    • Primax Electronics Ltd.
    • Liu-Bing Cai
    • H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents