Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 8598091 | Use of seeds as a cement set retarder | — | 2013-12-03 | |
| 7998269 | Cement blend | Landreth L. Moran | 2011-08-16 | |
| 7765883 | Dry blending aid | — | 2010-08-03 | |
| 7670994 | Method for treating oil and gas wells | Allen A. Pence | 2010-03-02 | |
| 4859344 | Method for underground support and removal of hazardous ions in ground waters | S. Ebow Coleman | 1989-08-22 | $6,295,000 |
| 4797159 | Expandable cement composition | — | 1989-01-10 | $7,622,000 |
| 4741834 | Method for underground support and removal of hazardous ions in ground waters | S. Ebow Coleman | 1988-05-03 | $5,343,000 |
| 4466833 | Lightweight cement slurry and method of use | — | 1984-08-21 | $8,476,000 |
| 4408489 | Apparatus and method for measuring the expansion properties of a cement composition | — | 1983-10-11 | $6,831,000 |