Michel Guillerme

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Morlaas, FR

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Patents Grantslast 30 patents

Information Patent Grant
Process for using biodegradable drilling muds
- Patent number 6,634,442
- Issue date Oct 21, 2003
- Elf Exploration Production
- Josiane Durrieu
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Biodegradable drilling mud and process for its preparation
- Patent number 6,426,321
- Issue date Jul 30, 2002
- Elf Exploration Production
- Josiane Durrieu
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Treatment of aqueous drilling mud effluents containing lignosulfonates
- Patent number 5,120,449
- Issue date Jun 9, 1992
- Societe Nationale Elf Aquitaine (Production)
- Michel Guillerme
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Treatment of residual earth drilling muds
- Patent number 4,174,278
- Issue date Nov 13, 1979
- Societe Nationale Elf Aquitaine (Production)
- Bernard Tramier
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Purifying treatment for effluents of mineral oil drillings
- Patent number 4,035,289
- Issue date Jul 12, 1977
- Societe Nationale Elf Aquitaine (Production)
- Michel Guillerme
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE