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:
Jan. 04, 1994
Filed:
Mar. 09, 1992
Applicant:
Inventors:
Sunil P Dasgupta, Wilmington, DE (US);
Herbert H Espy, Wilmington, DE (US);
Assignee:
Hercules Incorporated, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H / ;
U.S. Cl.
CPC ...
162177 ; 162111 ; 162183 ;
Abstract
A process for making paper to enhance the softness of the paper produced without reducing its dry strength comprises adding to the pulp slurry as a binder resin a cellulosic polymer that exhibits a cloud point in aqueous solution, and allowing the dissolved polymer to coalesce into fine colloidal particles at a temperature above the cloud point either before or after it is added to the slurry.
Dasgupta, Sunil. (1994). Enhancement of tissue paper softness with minimal effect on strength (U.S. Patent No. 5275698). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5275698
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile