Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5721200 | Process for making a lubricating oil composition | Cyril A. Migdal | 1998-02-24 |
| 5182038 | Mannich base phenol coupled mono and/or bis-succinimide lubricating oil additives | George P. Speranza | 1993-01-26 |