Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8236261 | Exhaust system having a gold-platinum group metal catalyst | Christie Susan Ragle, Ronald Silver, Svetlana Mikhailovna Zemskova | 2012-08-07 |
| 8071504 | Exhaust system having a gold-platinum group metal catalyst | Christie Susan Ragle, Ronald Silver, Svetlana Mikhailovna Zemskova | 2011-12-06 |