Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5360787 | Dispersant compositions comprising sulfonated isobutylene maleic anhydride copolymer for subterranean well drilling and completion | James B. Bloys, Edward Malachosky, Roger D. Bradshaw, Roger A. Grey | 1994-11-01 |
| 5292367 | Dispersant compositions for subterranean well drilling and completion | James B. Bloys, Edward Malachosky, Robert B. Carpenter, Roger D. Bradshaw | 1994-03-08 |