Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5335733 | Method for delaying gelation of a gelable polymer composition injected into a subterranean formation | Burton B. Sandiford, Richard D. Hutchins | 1994-08-09 |
| 5291949 | Method for inhibiting caustic flood breakthrough | Richard D. Hutchins | 1994-03-08 |