Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5320765 | Low ash lubricant compositions for internal combustion engines | Glen Fetterman | 1994-06-14 |
| 5141657 | Lubricant compositions for internal combustion engines | Glen Fetterman | 1992-08-25 |
| 5102566 | Low ash lubricant compositions for internal combustion engines (PT-727) | Glen Fetterman | 1992-04-07 |
| 4751011 | Hydrocarbon soluble complexes based on metal salts of polyolefinic dicarboxylic acids | Robert D. Lundberg, Antonio Gutierrez, Robert R. Phillips | 1988-06-14 |
| 4502970 | Lubricating oil composition | Norman Tunkel, Darrell W. Brownawell | 1985-03-05 |