Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6492306 | Nitrogen containing dispersant-viscosity improvers | Matthew R. Sivik, Richard M. Lange, Paul E. Adams | 2002-12-10 |
| 6486101 | Nitrogen containing dispersant-viscosity improvers | Carmen V. Luciani, Richard M. Lange | 2002-11-26 |