Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7087558 | Process for reacting large hydrophobic molecules with small hydrophilic molecules | Marvin B. DeTar, Richard M. Lange | 2006-08-08 |
| 6472353 | Dispersant-viscosity improvers for lubricating oil compositions | Richard M. Lange | 2002-10-29 |