Qinghua Liu — 13 Patents at Hypertherm

Qinghua Liu has been granted 13 US patents while listed as an inventor at Hypertherm. The first was granted in 1998 and the most recent in May 2025. Qinghua Liu ranks #362,438 of 4,157,543 US inventors in our database (top 8.7%). Patent records list Qinghua Liu in Ganzhou, NH, CN.

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Showing 1–13 of 13 patents

Patent #	Title	Co-Inventors	Date
D1075667	Earphone charging case	—	2025-05-20
D1073650	Earphone	—	2025-05-06
11411216	Electrode slurry, slurry electrode, flow battery and stack	John Patrick Lemmon, Chang Wei, Wenqiang Xu, Yonglong Li, Wenbin Liang	2022-08-09
10820401	Operating plasma arc processing systems at reduced current and gas pressure levels and related systems and methods	Shreyansh Patel, Junsong Mao, Richard Pavlik, Zheng Duan, Bruce P. Altobelli	2020-10-27
10039178	Failure event detection in a plasma arc torch	Zheng Duan, Zhang Yu	2018-07-31
9908195	Plasma cutting system with efficient components	Jesse A. Roberts, Shreyansh Patel, Stephen T. Eickhoff, Justin Gullotta, Dennis M. Borowy +3 more	2018-03-06
9882778	Remote electrical tilt antenna management apparatus, system, and method, remote controller, and base station	Yong Zhang, Weiren Qu	2018-01-30
9510436	Wide bandgap semiconductor based power supply assemblies for plasma operating systems and related methods and devices	Dennis M. Borowy, Yu Zhang, Girish R. Kamath, Michael Hoffa	2016-11-29
9226911	Method of reducing weight using composition containing fucoxanthin extract	Yanmei Li	2016-01-05
8454970	Compositions containing fucoxanthin extract	Yanmei Li	2013-06-04
7144714	R2D2: an enzyme of RNA silencing	Xiaodong Wang	2006-12-05
6828093	Rapid subcloning using site-specific recombination	Stephen J. Elledge	2004-12-07
5851808	Rapid subcloning using site-specific recombination	Stephen J. Elledge	1998-12-22

Qinghua Liu — 13 Patents

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