TREA

Yo-Yu CHANG

Follow

Person

  • NEW TAIPEI CITY, TW
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Pistol frame
    • Patent number 11,236,967
    • Issue date Feb 1, 2022
    • Chen-Hung Tai
    • F41 - WEAPONS
  • Information Patent Grant

    Pistol device
    • Patent number 11,073,351
    • Issue date Jul 27, 2021
    • Chen-Hung Tai
    • F41 - WEAPONS
  • Information Patent Grant

    Frame of pistol
    • Patent number 11,029,105
    • Issue date Jun 8, 2021
    • Chen-Hung Tai
    • F41 - WEAPONS
  • Information Patent Grant

    Barrier seal for electrostatic chuck
    • Patent number 10,529,611
    • Issue date Jan 7, 2020
    • MFC Sealing Technology Co., Ltd.
    • Yo-Yu Chang
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Method of installing elastomer ring in semiconductor processing equ...
    • Patent number 10,153,140
    • Issue date Dec 11, 2018
    • MFC Sealing Technology Co., Ltd.
    • Yo-Yu Chang
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS

Patents Applicationslast 30 patents

  • Information Patent Application

    FIRING PIN SYSTEM
    • Publication number 20230358494
    • Publication date Nov 9, 2023
    • Yo-Lun CHANG
    • F41 - WEAPONS
  • Information Patent Application

    LOCKING LOCK FOR A GUN
    • Publication number 20230324136
    • Publication date Oct 12, 2023
    • Chen-Hung TAI
    • F41 - WEAPONS
  • Information Patent Application

    SLIDE STOP LEVER
    • Publication number 20230304753
    • Publication date Sep 28, 2023
    • Chen-Hung TAI
    • F41 - WEAPONS
  • Information Patent Application

    PISTOL DEVICE
    • Publication number 20210116194
    • Publication date Apr 22, 2021
    • Chen-Hung TAI
    • F41 - WEAPONS
  • Information Patent Application

    PISTOL FRAME
    • Publication number 20210116208
    • Publication date Apr 22, 2021
    • Chen-Hung TAI
    • F41 - WEAPONS
  • Information Patent Application

    FRAME OF PISTOL
    • Publication number 20210116193
    • Publication date Apr 22, 2021
    • Chen-Hung TAI
    • F41 - WEAPONS
  • Information Patent Application

    Barrier Seal for Electrostatic Chuck
    • Publication number 20160240421
    • Publication date Aug 18, 2016
    • MFG SEALING TECHNOLOGY CO., LTD.
    • Yo-Yu Chang
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    METHOD OF INSTALLING ELASTOMER RING IN SEMICONDUCTOR PROCESSING EQU...
    • Publication number 20160163518
    • Publication date Jun 9, 2016
    • MFC SEALING TECHNOLOGY CO., LTD.
    • Yo-Yu CHANG
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS