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:
May. 07, 1996
Filed:
Jul. 06, 1994
Applicant:
Inventors:
Assignee:
Allied Colloids Limited, West Yorkshire, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H / ;
U.S. Cl.
CPC ...
1621641 ; 1621643 ; 1621681 ; 1621682 ; 1621683 ; 1621816 ; 1621818 ; 162183 ;
Abstract
Paper is made by adding nonionic or anionic polymeric retention aid to a suspension that contains a high electrolyte content, shearing the flocculated suspension, aggregating the sheared suspension by adding anionic particulate material (especially bentonite), and draining the suspension.