Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5314632 | Combining dispersant viscosity index improver and detergent additives for lubricants | Brian L. Papke, Issac D. Rubin | 1994-05-24 |
| 5294354 | Combining dispersant viscosity index improver and detergent additives for lubricants | Brian L. Papke, Isaac D. Rubin | 1994-03-15 |