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:
Apr. 13, 1976
Filed:
Nov. 18, 1974
Applicant:
Inventors:
Margaret Lilian Steel, Runcorn, EN;
Frank Holt, Runcorn, EN;
Assignee:
Imperial Chemical Industries Limited, London, EN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B02C / ;
U.S. Cl.
CPC ...
1063 / ; 241 15 ; 241 22 ;
Abstract
Minerals, including metal ores, fillers and coal, are ground with a grinding aid which is an ionic polysaccharide, particularly sodium carboxymethyl cellulose.