Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859355 | Phenolic-containing Mannich base reaction products and lubricant compositions containing same | — | 1989-08-22 |
| 4834776 | Low temperature fluidity improver | Joan C. Axelrod | 1989-05-30 |
| 4806130 | Phenolic-containing mannich base reaction products and fuel compositions containing same | — | 1989-02-21 |