The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 18, 1997
Filed:
Jan. 17, 1995
Applicant:
Inventors:
Assignee:
Elf Aquitaine, Courbevoie, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ;
U.S. Cl.
CPC ...
507110 ; 507213 ;
Abstract
Base composition for water-based drilling muds allowing the number and the amount of the other constituents of the mud to be restricted. In addition to the base solvent, fresh water, sea water or salt water, the said base composition comprises scleroglucan as viscosity agent, the mycelium which produced it and bentonite or an equivalent in limited amount.