Qinghua Liu

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Etna, NH, US

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Patents Grantslast 30 patents

Information Patent Grant
Operating plasma arc processing systems at reduced current and gas...
- Patent number 10,820,401
- Issue date Oct 27, 2020
- Hypertherm, Inc.
- Shreyansh Patel
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Failure event detection in a plasma arc torch
- Patent number 10,039,178
- Issue date Jul 31, 2018
- Hypertherm, Inc.
- Qinghua Liu
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Plasma cutting system with efficient components
- Patent number 9,908,195
- Issue date Mar 6, 2018
- Hypertherm, Inc.
- Jesse A. Roberts
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Wide bandgap semiconductor based power supply assemblies for plasma...
- Patent number 9,510,436
- Issue date Nov 29, 2016
- Hypertherm, Inc.
- Dennis M. Borowy
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
Operating Plasma Arc Processing Systems at Reduced Current and Gas...
- Publication number 20180056430
- Publication date Mar 1, 2018
- HYPERTHERM, INC.
- Shreyansh Patel
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
Plasma Cutting System with Efficient Components
- Publication number 20150343554
- Publication date Dec 3, 2015
- HYPERTHERM, INC.
- Jesse A. Roberts
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
Wide Bandgap Semiconductor Based Power Supply Assemblies for Plasma...
- Publication number 20150282290
- Publication date Oct 1, 2015
- HYPERTHERM, INC.
- Dennis M. Borowy
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Application
FAILURE EVENT DETECTION IN A PLASMA ARC TORCH
- Publication number 20120234803
- Publication date Sep 20, 2012
- HYPERTHERM, INC.
- Qinghua Liu
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR