Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7544785 | Process for the treatment for chitinaceous materials and for the deacetylation of chitin | Andre′ N. Blanchard, Catherine G. Benoit, Tammy L. Rodrigue | 2009-06-09 |
| 7199085 | Colloidal and colloidal-like systems in aqueous, clay-based fluids | Tony Rea, Tommy F. Brookey, Frederick B. Growcock, Mike Kilchrist | 2007-04-03 |
| 7033977 | Compositions and methods for sealing formations | Tommy F. Brookey, Mike Kilchrist | 2006-04-25 |
| 6780822 | Anhydride-modified chitosan, method of preparation thereof, and fluids containing same | Roy F. House, Tammy L. Rodrigue | 2004-08-24 |
| 6739414 | Compositions and methods for sealing formations | Tommy F. Brookey, Mike Kilchrist | 2004-05-25 |
| 6562762 | Method of and composition for reducing the loss of fluid during well drilling, completion or workover operations | Michael J. Kilchrist | 2003-05-13 |
| 6258755 | Chitosan-containing well drilling and servicing fluids | Roy F. House | 2001-07-10 |
| 6156708 | Aphron-containing oil base fluids and method of drilling a well therewith | Tommy F. Brookey | 2000-12-05 |
| 6148917 | Method of releasing stuck pipe or tools and spotting fluids therefor | Tommy F. Brookey | 2000-11-21 |
| 5207830 | Lightweight particulate cementitious materials and process for producing same | Roy F. House, Andree' H. Harrington | 1993-05-04 |
| 5147852 | Reduction of seepage losses in well working compositions | Roy F. House, Andree H. Harrington | 1992-09-15 |
| 5076944 | Seepage loss reducing additive for well working compositions and uses thereof | Roy F. House, Andree' H. Harrington | 1991-12-31 |
| 5071575 | Well working compositions, method of decreasing the seepage loss from such compositions, and additive therefor | Roy F. House, Andree H. Harrington | 1991-12-10 |
| 5045593 | Organophilic modified polymers | Roy F. House, Victor M. Granquist | 1991-09-03 |
| 5004553 | Well working compositions, method of decreasing the seepage loss from such compositions, and additive therefor | Roy F. House, Andree H. Wilkinson | 1991-04-02 |
| 4960740 | Organophilic clay compositions | Roy F. House, Victor M. Granquist | 1990-10-02 |
| 4956104 | Organophilic polymers | Roy F. House, Victor M. Granquist | 1990-09-11 |
| 4863980 | Organophilic modified polymers | Roy F. House, Victor M. Granquist | 1989-09-05 |
| 4853465 | Organophilic polyphenolic acid adducts | Victor M. Granquist, Roy F. House | 1989-08-01 |
| 4843048 | Organophilic clay compositions | Roy F. House, Victor M. Granquist | 1989-06-27 |
| 4737295 | Organophilic polyphenolic acid adducts | Victor M. Granquist, Roy F. House | 1988-04-12 |
| 4599181 | Humic substances with enhanced surface charge | — | 1986-07-08 |
| 4531594 | Method and compositions for fluid loss and seepage loss control | — | 1985-07-30 |
| 4505750 | Foundry mold and core sands | — | 1985-03-19 |
| 4428843 | Well working compositions, method of decreasing the seepage loss from such compositions, and additive therefor | Tommy K. Thrash, Jerry R. Rayborn | 1984-01-31 |