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:
Feb. 26, 1980
Filed:
Aug. 24, 1978
Applicant:
Inventors:
Thomas J Drennen, Lafayette Hills, PA (US);
Robert A Gill, Abington, PA (US);
Assignee:
Rohm and Haas Company, Philadelphia, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21C / ;
U.S. Cl.
CPC ...
162 76 ; 162 72 ; 162D / ;
Abstract
A process for preventing deposition of pitch in papermaking comprising incorporating in a paper pulp slurry a water-soluble linear cationic polymer comprised of units of the formula ##STR1## wherein A is a (C.sub.2 -C.sub.3) alkylene group,