Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5387346 | Automatic transmission fluids and additives therefor | Rolfe J. Hartley | 1995-02-07 |
| 5360562 | Ashless or low-ash synthetic base compositions and additives therefor | Rolfe J. Hartley | 1994-11-01 |
| 5089156 | Ashless or low-ash synthetic base compositions and additives therefor | Rolfe J. Hartley | 1992-02-18 |