Loftin; Royal E.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Loftin; Royal E..The latest application filed is for "well drilling and completion fluid composition".
- Loftin; Royal E. - Houston TX
| Patent | Date |
|---|---|
| Well drilling and completion fluid composition Grant 4,536,297 - Loftin , et al. * August 20, 1 | 1985-08-20 |
| Method of preventing loss of an oil-base drilling fluid during the drilling of an oil or gas well into a subterranean formation Grant 4,525,285 - Son , et al. June 25, 1 | 1985-06-25 |
| Well drilling and completion fluid composition Grant 4,440,649 - Loftin , et al. April 3, 1 | 1984-04-03 |
| Lubricating composition for well fluids Grant 4,409,108 - Carney , et al. October 11, 1 | 1983-10-11 |
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