Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6634169 | Method and system for maintaining efficiency of a three-way catalyst | Paul Joseph Andersen, Todd Howard Ballinger, David S. Lafyatis, Andrew Peter Walker | 2003-10-21 |
| 6546717 | Combatting air pollution | Guy Richard Chandler, Alan Francis Diwell | 2003-04-15 |