Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4555493 | Aluminosilicate ceramic proppant for gas and oil well fracturing and method of forming same | David Watson, Val G. Carithers | 1985-11-26 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4555493 | Aluminosilicate ceramic proppant for gas and oil well fracturing and method of forming same | David Watson, Val G. Carithers | 1985-11-26 |