Patents per Year
Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 6878348 | Design and method of manufacturing a plasma reactor for treating auto emissions-stacked shapes | David Emil Nelson, Mark Hemingway | 2005-04-12 | $876,000 |
| 6692704 | Non-thermal plasma reactor and method-structural conductor | David Emil Nelson, Bob Li, Mark Hemingway, Suresh Baskaran, Joachim Kupe +3 more | 2004-02-17 | $1,504,000 |
| 6338827 | Stacked shape plasma reactor design for treating auto emissions | David Emil Nelson, Mark Hemingway | 2002-01-15 | $4,658,000 |
| 5106588 | Monolithic catalytic converter | Slater W. Hawes | 1992-04-21 |