Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863624 | Dispersant additives mixtures for oleaginous compositions | Malcolm Waddoups, Robert D. Lundberg | 1989-09-05 |
| 4849572 | Process for preparing polybutenes having enhanced reactivity using boron trifluoride catalysts (PT-647) | Frank J. Chen, Robert D. Lundberg, Gregory C. Giffin | 1989-07-18 |
| 4839073 | Polyolefinic succinimide polyamine alkyl acetoacetate and substituted acetate adducts as compatibilizer additives in lubricating oil compositions | Antonio Gutierrez, Robert A. Kleist, Malcolm Waddoups | 1989-06-13 |