Edward Martin

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Taunton, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Power saving welding helmet
- Patent number 10,172,741
- Issue date Jan 8, 2019
- ARCMASK OPTECH CO., LTD
- Chien-Hsing Hsieh
- G02 - OPTICS
Information Patent Grant
Welding filter device and control method thereof
- Patent number 8,331,001
- Issue date Dec 11, 2012
- Arcmask Optech Co., Ltd.
- Chien-Hsing Hsieh
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE

Patents Applicationslast 30 patents

Information Patent Application
POWER SAVING WELDING HELMET
- Publication number 20180360663
- Publication date Dec 20, 2018
- ARCMASK OPTECH CO., LTD
- Chien-Hsing Hsieh
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
WELDING FILTER DEVICE AND CONTROL METHOD THEREOF
- Publication number 20120176659
- Publication date Jul 12, 2012
- ARCMASK OPTECH CO., LTD
- Chien-Hsing HSIEH
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE