Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8178068 | Catalyst charge design | Sean Axon, Duncan Roy Coupland, Brian Thomas Horner, John Ridland | 2012-05-15 |
| 6775972 | Purification of exhaust gases | Martyn Vincent Twigg | 2004-08-17 |
| 6557340 | System and method for purifying exhaust gases | Martin Vincent Twigg | 2003-05-06 |