Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5294256 | Additives for hydraulic cement compositions | Chiara F. Ferraris, James M. Gaidis, Ellis Gartner | 1994-03-15 |
| 4687516 | Liquid fluid loss control additive for oil field cements | John F. Burkhalter | 1987-08-18 |
| 4588032 | Fluid spacer composition for use in well cementing | Patty L. Totten | 1986-05-13 |