Issued Patents All Time
Showing 26–50 of 51 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6490797 | Blade lock for folding knife | Ronald W. Lake | 2002-12-10 |
| 6448311 | Cement fluid loss additive | — | 2002-09-10 |
| 5849148 | Distributor plate and evaporator | — | 1998-12-15 |
| 5759964 | High viscosity well treating fluids, additives and methods | Chris E. Shuchart | 1998-06-02 |
| 5669447 | Methods for breaking viscosified fluids | Chris E. Shuchart, John M. Terracina | 1997-09-23 |
| 5669446 | Methods for breaking viscosified fluids | Chris E. Shuchart, John M. Terracina, Billy Slabaugh, Michael A. McCabe | 1997-09-23 |
| 5596808 | Safety for knife-blade lock | Ronald W. Lake | 1997-01-28 |
| 5591381 | Corrosion inhibiting compositions and methods | — | 1997-01-07 |
| 5441929 | Hydrochloric acid acidizing composition and method | — | 1995-08-15 |
| 5413178 | Method for breaking stabilized viscosified fluids | Chris E. Shuchart | 1995-05-09 |
| 5411670 | Method and composition for protecting metal surfaces from oxidative environments | — | 1995-05-02 |
| 5366643 | Method and composition for acidizing subterranean formations | — | 1994-11-22 |
| 4979301 | Locking mechanism for folding blade knife | — | 1990-12-25 |
| 4949790 | Compositions and method for controlling precipitation when acidizing sour wells | Walter R. Dill | 1990-08-21 |
| 4896424 | Composite cutting blade and method of making the blade | — | 1990-01-30 |
| 4888121 | Compositions and method for controlling precipitation when acidizing sour wells | Walter R. Dill | 1989-12-19 |
| 4823392 | Compressor | — | 1989-04-18 |
| 4683954 | Composition and method of stimulating subterranean formations | William G. F. Ford, Walter R. Dill, Ricky D. Gdanski | 1987-08-04 |
| 4679631 | Composition and method of stimulating subterranean formations | Walter R. Dill, William G. F. Ford | 1987-07-14 |
| 4551917 | Knife with locking folding blade | — | 1985-11-12 |
| 4552672 | Method and composition for acidizing subterranean formations | — | 1985-11-12 |
| 4522658 | Method and composition for protecting metal surfaces from oxidative environments | — | 1985-06-11 |
| 4519922 | Environmentally compatible high density drill mud or blow-out control fluid | David L. Sutton | 1985-05-28 |
| 4498997 | Method and composition for acidizing subterranean formations | — | 1985-02-12 |
| 4444668 | Well completion fluid compositions | Joe W. Johnson, Jr. | 1984-04-24 |