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:
Dec. 23, 1986
Filed:
Oct. 30, 1984
Applicant:
Inventor:
Brian Dymond, Bradford, GB;
Assignee:
Allied Colloids Ltd., , GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ;
U.S. Cl.
CPC ...
252-8514 ; 252-851 ;
Abstract
Bentonites can be extended for use in drilling muds by addition of a novel polymer blend comprising a low molecular weight water soluble non-ionic or anionic polymer and a high molecular weight anionic polymer.