Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880923 | Macrocyclic polyamine and polycyclic polyamine multifunctional lubricating oil additives | Antonio Gutierrez | 1989-11-14 |
| 4867753 | Olefinic hydrocarbon modification with sulfur imides | — | 1989-09-19 |
| 4866187 | Thio-bis(alkyl lactone acid esters) and thio-bis-(hydrocarbyl diacid esters) are useful additives for lubricating compositions | Antonio Gutierrez | 1989-09-12 |
| 4851524 | Amine-treated thio-bis-(alkyl lactone acid) and thio-bis-(hydrocarbyl diacid) materials, additives for lubricating compositions | Antonio Gutierrez | 1989-07-25 |
| 4810262 | Fuel compositions | Kenneth Lewtas | 1989-03-07 |