Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5207830 | Lightweight particulate cementitious materials and process for producing same | Jack C. Cowan, Roy F. House | 1993-05-04 |
| 5076944 | Seepage loss reducing additive for well working compositions and uses thereof | Jack C. Cowan, Roy F. House | 1991-12-31 |