Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
ZD

Zheng Duan — 47 Patents

HYHypertherm: 38 patents #3 of 199Top 2%
Samsung: 4 patents #25,854 of 75,807Top 35%
Foxconn: 3 patents #1,668 of 5,504Top 35%
TUTsinghua University: 3 patents #542 of 2,815Top 20%
BOBOE: 1 patents #7,844 of 12,373Top 65%
Beijing, NH: #1 of 8 inventorsTop 15%
Overall (All Time): #59,713 of 4,157,543Top 2%
47 Patents All Time

Issued Patents All Time

Showing 26–47 of 47 patents

Patent #TitleCo-InventorsDate
9937491 Method for preparing chiral ferrocene diphosphine ligand Hui-Yu Chen, Zhenqiang Yang, Yinlong Zhang, Shunwei Zhao, Duo Zhou +2 more 2018-04-10
9908195 Plasma cutting system with efficient components Jesse A. Roberts, Shreyansh Patel, Stephen T. Eickhoff, Justin Gullotta, Qinghua Liu +3 more 2018-03-06
9492883 Electrode for a contact start plasma arc torch and contact start plasma arc torch employing such electrodes Jonathan Mather, Nicholas A. Sanders, Jon W. Lindsay, Peter J. Twarog, E. Michael Shipulski +1 more 2016-11-15
9480139 Plasma ARC torch electrode with symmetrical plasma gas flow Yu Zhang 2016-10-25
9462670 Diffuser shape vent slots in a hand torch shield castellation Shreyansh Patel, Steven Moody, Nicholas Pecor 2016-10-04
9326367 Devices for gas cooling plasma arc torches and related systems and methods Yu Zhang 2016-04-26
9144148 Devices for gas cooling plasma arc torches and related systems and methods Yu Zhang, Lisa Nadeau 2015-09-22
8884179 Torch flow regulation using nozzle features Jesse A. Roberts, Peter J. Twarog, Sung Je Kim 2014-11-11
8866038 Consumable component parts for a plasma torch Jon W. Lindsay, Brent R. Bartlett, Aaron D. Brandt, Stephen M. Liebold 2014-10-21
8835796 Diffuser shape vent slots in a hand torch shield castellation Yu Zhang 2014-09-16
8809728 Method and apparatus for automatic gas control for a plasma arc torch Aaron D. Brandt, Christopher S. Passage, Shane M. Selmer, Girish R. Kamath, Guy T. Best +2 more 2014-08-19
8698036 Devices for gas cooling plasma arc torches and related systems and methods Yu Zhang, Michael F. Kornprobst, David Agan 2014-04-15
8541710 Method and apparatus for automatic gas control for a plasma arc torch Aaron D. Brandt, Christopher S. Passage, Shane M. Selmer, Girish R. Kamath, Guy T. Best +2 more 2013-09-24
8513565 Nozzle head with increased shoulder thickness 2013-08-20
8395077 Plasma arc torch providing angular shield flow injection Stephen M. Liebold, Aaron D. Brandt 2013-03-12
7829816 Plasma arc torch providing angular shield flow injection Stephen M. Liebold, Aaron D. Brandt 2010-11-09
7754996 Method and apparatus for alignment of components of a plasma arc torch Aaron D. Brandt, Richard Anderson, Brian J. Currier, Jon W. Lindsay, Casey Jones +1 more 2010-07-13
7605340 Apparatus for cooling plasma arc torch nozzles 2009-10-20
7598473 Generating discrete gas jets in plasma arc torch applications David J. Cook, Stephen M. Liebold, Jon W. Lindsay 2009-10-06
7193174 Method and apparatus for alignment of components of a plasma arc torch Aaron D. Brandt, Richard Anderson, Brian J. Currier, Jon W. Lindsay, Casey Jones +1 more 2007-03-20
7019255 Method and apparatus for alignment of components of a plasma ARC torch Aaron D. Brandt, Richard Anderson, Brian J. Currier, Jon W. Lindsay, Casey Jones +1 more 2006-03-28
6946617 Method and apparatus for alignment of components of a plasma arc torch Aaron D. Brandt, Richard Anderson, Brian J. Currier, Jon W. Lindsay, Casey Jones +1 more 2005-09-20