Issued Patents All Time
Showing 26–50 of 61 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8890021 | Portable autonomous material processing system | E. Michael Shipulski | 2014-11-18 |
| 8350182 | Portable autonomous material processing system | E. Michael Shipulski | 2013-01-08 |
| 8203096 | Wearable autonomous material processing system | E. Michael Shipulski, Mike Hoffa, Jay Jason | 2012-06-19 |
| 8089025 | Gas-cooled plasma arc cutting torch | — | 2012-01-03 |
| 7615720 | Pilot arc circuit for a contact start plasma torch | — | 2009-11-10 |
| 7198867 | Electrochemical generation, storage and reaction of hydrogen and oxygen | — | 2007-04-03 |
| 7049540 | Process and apparatus for cutting or welding a workpiece | Richard W. Couch, Jr., Yong Yang, Zhipeng Lu, Robert C. Dean, Jr., Charles M. Hackett | 2006-05-23 |
| 6720518 | Process and apparatus for cutting or welding a workpiece | Richard W. Couch, Jr., Yong Yang, Zhipeng Lu, Robert C. Dean, Jr., Kenneth J. Woods +3 more | 2004-04-13 |
| 6713709 | Process and apparatus for cutting or welding a workpiece | Richard W. Couch, Jr., Yong Yang, Zhipeng Lu, Robert C. Dean, Jr., Kenneth J. Woods +3 more | 2004-03-30 |
| 6525291 | Process and apparatus for cutting or welding a workpiece | Richard W. Couch, Jr., Yong Yang, Zhipeng Lu, Robert C. Dean, Jr., Kenneth J. Woods +3 more | 2003-02-25 |
| 5756960 | Detecting non-symmetrical nozzle wear in a plasma arc torch | Maciej Wlodzimierz Rogozinski, Subramania Ramakrishnan, Ashley Grant Doolette, Richard W. Couch, Jr. | 1998-05-26 |
| 5717187 | Plasma torch condition monitoring | Maciej Wlodzimierz Rogozinski, Subramania Ramakrishnan, Ashley Grant Doolette, Richard W. Couch, Jr. | 1998-02-10 |
| 5695662 | Plasma arc cutting process and apparatus using an oxygen-rich gas shield | Richard W. Couch, Jr., Lifeng Luo, John Sobr | 1997-12-09 |
| 5653896 | Process for high quality plasma arc and laser cutting of stainless steel and aluminum | Richard W. Couch, Jr., Zhipeng Lu, Lifeng Luo, Staffan C. O. Stenfelt | 1997-08-05 |
| 5624586 | Alignment device and method for a plasma arc torch system | John Sobr | 1997-04-29 |
| 5591357 | Plasma arc cutting process and apparatus using an oxygen-rich gas shield | Richard W. Couch, Jr., Lifeng Luo, John Sobr | 1997-01-07 |
| 5558786 | Process for high quality plasma arc and laser cutting of stainless steel and aluminum | Richard W. Couch, Jr., Zhipeng Lu, Lifeng Luo, Staffan C. O. Stenfelt | 1996-09-24 |
| 5414236 | Process for high quality plasma arc cutting of stainless steel and aluminum | Richard W. Couch, Jr., Zhipeng Lu, Lifeng Luo | 1995-05-09 |
| 5396043 | Plasma arc cutting process and apparatus using an oxygen-rich gas shield | Richard W. Couch, Jr., Lifeng Luo, John Sobr | 1995-03-07 |
| 5380976 | Process for high quality plasma arc and laser cutting of stainless steel and aluminum | Richard W. Couch, Jr., Zhipeng Lu, Lifeng Luo, Staffan C. O. Stenfelt | 1995-01-10 |
| 5317126 | Nozzle and method of operation for a plasma arc torch | Richard W. Couch, Jr., Lifeng Luo, John Sobr, Patrik Backander | 1994-05-31 |
| 5170033 | Swirl ring and flow control process for a plasma arc torch | Richard W. Couch, Jr., Lifeng Luo | 1992-12-08 |
| 5166494 | Process and apparatus for reducing electrode wear in a plasma arc torch | Lifeng Luo, Richard W. Couch, Jr. | 1992-11-24 |
| 5164568 | Nozzle for a plasma arc torch having an angled inner surface to facilitate and control arc ignition | — | 1992-11-17 |
| 5132512 | Arc torch nozzle shield for plasma | Richard W. Couch, Jr. | 1992-07-21 |