Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7972997 | Process for coating gravel pack sand with polymeric breaker | Hugh Caffery, Li-Jein Lee | 2011-07-05 |
| 7863223 | Oil-based insulating packer fluid | Larry H. Leggett, Morris Arvie, Jr., Robert L. Horton, Joyce H. Zhang | 2011-01-04 |