Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4517100 | Lubricating wellbore fluid and method of drilling | Jack M. Calkins | 1985-05-14 |
| 4181617 | Aqueous drilling fluid and lubricant composition | Stephen H. Elrod | 1980-01-01 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4517100 | Lubricating wellbore fluid and method of drilling | Jack M. Calkins | 1985-05-14 |
| 4181617 | Aqueous drilling fluid and lubricant composition | Stephen H. Elrod | 1980-01-01 |