Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4839071 | Polyolefinic succinimide polyamine alkyl acetoacetate adducts as dispersants in lubricating oil compositions | Antonio Gutierrez, Robert D. Lundberg, Robert A. Kleist | 1989-06-13 |
| 4804794 | Viscosity modifier polymers | Gary Ver Strate, Mark J. Struglinski, John E. Johnston, Roger K. West | 1989-02-14 |