Guillerme; Michel
Patent Applications and Registrations
Patent applications and USPTO patent grants for Guillerme; Michel.The latest application filed is for "process for using biodegradable drilling muds".
- Guillerme; Michel - Serrescastet FR
- Guillerme; Michel - Serres Castet FR
- Guillerme; Michel - Morlaas FR
| Patent | Date |
|---|---|
| Process for using biodegradable drilling muds Grant 6,634,442 - Durrieu , et al. October 21, 2 | 2003-10-21 |
| Biodegradable drilling mud and process for its preparation Grant 6,426,321 - Durrieu , et al. July 30, 2 | 2002-07-30 |
| Treatment of residual earth drilling muds Grant 4,174,278 - Tramier , et al. November 13, 1 | 1979-11-13 |
| Purifying treatment for effluents of mineral oil drillings Grant 4,035,289 - Guillerme , et al. July 12, 1 | 1977-07-12 |
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