Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6869919 | Lubricating oil compositions | Andrew J. D. Ritchie, Jai G. Bansal, Jacob Emert, Antonio Gutierrez, Matthew Irving +2 more | 2005-03-22 |
| 6715473 | EGR equipped diesel engines and lubricating oil compositions | Andrew J. D. Ritchie, Jai G. Bansal, Jacob Emert, Antonio Gutierrez, Matthew Irving +2 more | 2004-04-06 |
| 5320765 | Low ash lubricant compositions for internal combustion engines | Alan A. Schetelich | 1994-06-14 |
| 5141657 | Lubricant compositions for internal combustion engines | Alan A. Schetelich | 1992-08-25 |
| 5102566 | Low ash lubricant compositions for internal combustion engines (PT-727) | Alan A. Schetelich | 1992-04-07 |