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:
Jul. 23, 1996
Filed:
Mar. 02, 1994
Applicant:
Inventors:
Kevin J McCarthy, St. Louis, MO (US);
Charles W Burkhardt, Fenton, MO (US);
Steven P Holmes, St. Louis, MO (US);
David J Poelker, Belleville, IL (US);
Assignee:
Petrolite Corporation, St. Louis, MO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K / ; A01N / ;
U.S. Cl.
CPC ...
424115 ; 424 931 ;
Abstract
A method for suppressing the viscosity of a calcium exotoxin slurry is disclosed. The method comprises adding to the slurry a viscosity-suppressing amount of a copolymer of a vinyl-based monomer and 2-acrylamide-2-methylpropane sulfonic acid or its sodium salt. The copolymer has a weight average molecular weight of from about 1,000 to about 10,000. A slurry comprising calcium exotoxin and about 0.25 to about 2.5 percent by weight of such copolymer is also disclosed.