YAU DONG CHANG

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Changhua County, TW

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Patents Grantslast 30 patents

Information Patent Grant
Testing machine for tires
- Patent number 12,216,023
- Issue date Feb 4, 2025
- EKTRON TEK CO., LTD.
- Yau Dong Chang
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Plastometer
- Patent number 10,914,663
- Issue date Feb 9, 2021
- EKTRON TEK CO., LTD.
- Yau Dong Chang
- G01 - MEASURING TESTING
Information Patent Grant
Transmission structure of ozone testing machine
- Patent number 10,830,319
- Issue date Nov 10, 2020
- EKTRON TEK CO., LTD.
- Yau-Dong Chang
- G01 - MEASURING TESTING
Information Patent Grant
Tire rolling resistance test machine
- Patent number 10,732,077
- Issue date Aug 4, 2020
- EKTRON TEK CO., LTD.
- Yau Dong Chang
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
TESTING MACHINE FOR TIRES
- Publication number 20240085275
- Publication date Mar 14, 2024
- EKTRON TEK CO.,LTD.
- YAU DONG CHANG
- G01 - MEASURING TESTING
Information Patent Application
PLASTOMETER
- Publication number 20200309659
- Publication date Oct 1, 2020
- EKTRON TEK CO.,LTD.
- YAU DONG CHANG
- G01 - MEASURING TESTING
Information Patent Application
TRANSMISSION STRUCTURE OF OZONE TESTING MACHINE
- Publication number 20190360566
- Publication date Nov 28, 2019
- EKTRON TEK CO.,LTD.
- YAU-DONG CHANG
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
TIRE ROLLING RESISTANCE TEST MACHINE
- Publication number 20190178753
- Publication date Jun 13, 2019
- EKTRON TEK CO.,LTD.
- YAU DONG CHANG
- G01 - MEASURING TESTING