Yo-Yu CHANG

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NEW TAIPEI CITY, TW

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Patents Grantslast 30 patents

Information Patent Grant
Locking block for a gun
- Patent number 12,259,206
- Issue date Mar 25, 2025
- Chen-Hung Tai
- F41 - WEAPONS
Information Patent Grant
Firing pin system
- Patent number 12,117,256
- Issue date Oct 15, 2024
- Yo-Lun Chang
- F41 - WEAPONS
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