Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5117058 | Cationic amide/ester compositions as demulsifiers | Robert G. Chen | 1992-05-26 |
| 4647859 | Method for effecting electric well logging with introduction of a fluid composition to minimize the effect of interfering ions | Royal E. Loftin | 1987-03-03 |
| 4539122 | Corrosion inhibitor for heavy brines | Mark S. Kuzlik | 1985-09-03 |
| 4536297 | Well drilling and completion fluid composition | Royal E. Loftin | 1985-08-20 |
| 4526693 | Shale and salt stabilizing drilling fluid | Vernon S. Neal, Christopher M. Garvey | 1985-07-02 |
| 4525285 | Method of preventing loss of an oil-base drilling fluid during the drilling of an oil or gas well into a subterranean formation | Royal E. Loftin | 1985-06-25 |
| 4440649 | Well drilling and completion fluid composition | Royal E. Loftin | 1984-04-03 |