Alain Donche

Person

Jurancon, FR

People

Patents Grantslast 30 patents

Information Patent Grant
Scleroglucan based drilling mud
- Patent number 5,612,294
- Issue date Mar 18, 1997
- Elf Aquitaine
- Alain Vaussard
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Application of muds containing scleroglucan to drilling large diame...
- Patent number 5,525,587
- Issue date Jun 11, 1996
- Societe Nationale Elf Aquitaine
- Alain Ladret
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Application of scleroglucan muds to drilling deviated wells
- Patent number 5,330,015
- Issue date Jul 19, 1994
- Societe Nationale Elf Aquitaine
- Alain Donche
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Process for enhancing oil recovery using scleroglucan powders
- Patent number 5,323,857
- Issue date Jun 28, 1994
- Societe Nationale Elf Aquitaine
- Rosangela Pirri
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Scleroglucan-based compositions and their use as a cementation spacer
- Patent number 5,306,340
- Issue date Apr 26, 1994
- Societe Nationale Elf Aquitaine
- Alain Donche
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Process for improving the dispersibility and filterability of scler...
- Patent number 5,224,988
- Issue date Jul 6, 1993
- Societe Nationale Elf Aquitaine
- Rosangela Pirri
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Alain Donche

Person

Patents Grantslast 30 patents

Scleroglucan based drilling mud

Application of muds containing scleroglucan to drilling large diame...

Application of scleroglucan muds to drilling deviated wells

Process for enhancing oil recovery using scleroglucan powders

Scleroglucan-based compositions and their use as a cementation spacer

Process for improving the dispersibility and filterability of scler...