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:
Jan. 05, 1982
Filed:
Aug. 01, 1980
Applicant:
Inventors:
Friedrich Engelhardt, Frankfurt am Main, DE;
Ulrich Riegel, Frankfurt am Main, DE;
Martin Hille, Liederbach, DE;
Heinz Wittkus, Frankfurt am Main, DE;
Assignee:
Cassella Aktiengesellschaft, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
526240 ; 252 / ; 526287 ;
Abstract
Outstandingly suitable drilling mud additives are water soluble copolymers consisting essentially of a random distribution of