Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880553 | Methylene linked aromatic pour point depressant | Joseph L. Kostusyk | 1989-11-14 |
| 4804489 | Low molecular weight viscosity modifying compositions | Jeffrey F. Munson, Stephen A. Di Biase | 1989-02-14 |