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:
Oct. 20, 1981
Filed:
Jun. 02, 1980
Applicant:
Inventor:
David H Dumas, Wilmington, DE (US);
Assignee:
Hercules Incorporated, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H / ;
U.S. Cl.
CPC ...
162158 ; 1621 / ; 162179 ; 162180 ;
Abstract
Disclosed is a method for sizing paper wherein the sizing agent employed is a hydrophobic cellulose reactive sizing agent such as a ketene dimer sizing agent. There is employed in combination with the sizing agent a novel sizing accelerator whereby off-the-machine sizing is improved substantially. Disclosed also is a novel sizing composition comprised of the sizing agent and the accelerator, the accelerator being a poly(diallylamine)epihalohydrin resin.
Dumas, David. (1981). Sizing method and sizing composition for use therein (U.S. Patent No. 4295931). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4295931
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile