Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4389221 | Gasoline composition and method for reducing fuel consumption | Leonard B. Graiff, Rudolf F. Heldeweg | 1983-06-21 |
| 4212751 | Dithiophosphoric acids and salts thereof and oil compositions containing the salts | Hendrik Schadenberg, Aaldert Johannes De Jong | 1980-07-15 |