Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6451920 | Process for making polyalkylene/maleic anhydride copolymer | William R. Ruhe, Jr. | 2002-09-17 |
| 6410491 | Polyalkenyl sulfonates | Curtis B. Campbell | 2002-06-25 |
| 6358892 | Polyalkylene succinimides and post-treated derivatives thereof | William R. Ruhe, Jr. | 2002-03-19 |