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:
Jun. 29, 1993
Filed:
Nov. 05, 1991
Applicant:
Inventors:
Jean Cluyse, Louvain-La-Neuve, BE;
Philip Ford, Suffolk, VA (US);
John G Langley, Leeds, GB;
Peter Lowry, Suffolk, VA (US);
Assignee:
Allied Colloids Limited, , GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H / ;
U.S. Cl.
CPC ...
1621812 ; 1621813 ; 1621818 ; 162183 ;
Abstract
Bentonite swelling clay is provided to a paper making mill as a fluid concentrate containing more than 15% bentonite wherein swelling of the bentonite is prevented by inorganic electrolyte in the concentrate, and the bentonite swells upon dilution either before addition of the cellulosic suspension or after addition.