Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7199085 | Colloidal and colloidal-like systems in aqueous, clay-based fluids | Tony Rea, Jack C. Cowan, Frederick B. Growcock, Mike Kilchrist | 2007-04-03 |
| 7033977 | Compositions and methods for sealing formations | Jack C. Cowan, Mike Kilchrist | 2006-04-25 |
| 6770601 | Aphron-containing aqueous well drilling and servicing fluids | — | 2004-08-03 |
| 6739414 | Compositions and methods for sealing formations | Jack C. Cowan, Mike Kilchrist | 2004-05-25 |
| 6716797 | Aphron-containing well drilling and servicing fluids | — | 2004-04-06 |
| 6422326 | Aphron-containing well drilling and servicing fluids of enhanced stability | Roy F. House | 2002-07-23 |
| 6390208 | Aphron-containing well drilling and servicing fluids | — | 2002-05-21 |
| 6156708 | Aphron-containing oil base fluids and method of drilling a well therewith | Jack C. Cowan | 2000-12-05 |
| 6148917 | Method of releasing stuck pipe or tools and spotting fluids therefor | Jack C. Cowan | 2000-11-21 |
| 6123159 | Aphron-containing well drilling and servicing fluids of enhanced stability | Roy F. House | 2000-09-26 |
| 5881826 | Aphron-containing well drilling and servicing fluids | — | 1999-03-16 |