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. 08, 1983
Filed:
Aug. 17, 1981
Applicant:
Inventors:
David D Newkirk, Beaverton, OR (US);
Darrel L Wilhoit, Wadsworth, IL (US);
Assignee:
Crown Zellerbach Corporation, San Francisco, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H / ;
U.S. Cl.
CPC ...
162158 ; 8100 ;
Abstract
This invention is directed to a method for upgrading cellulose by treating same with a chemical to produce a cellulose sheet having substantially increased absorbency, bulk and softness properties. The chemical system comprises the reaction product of a cyanuric halide compound and an alkylene oxide compound, respectively.