Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5614124 | Polyisobutylene succinimide, ethylene-propylene succinimide and an alkylated phenothiazine additive for lubricating oil compositions | Carl K. Esche, Jr., Cyril A. Migdal, John R. Sanderson | 1997-03-25 |