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:
Jul. 19, 1994
Filed:
Feb. 01, 1993
Applicant:
Inventors:
Mark A Johnson, Chillicothe, OH (US);
Alexander R Pokora, Pickerington, OH (US);
Joseph B Henry, Pickerington, OH (US);
Assignee:
The Mead Corporation, Dayton, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21C / ;
U.S. Cl.
CPC ...
162-5 ; 162 72 ; 435278 ;
Abstract
A method for treating fibrous sheet materials such as paper or paperboard containing polyamide resin as a wet strength agent which comprises reacting the fibrous materials with an enzyme to hydrolyze the resin and thereby improve repulping of the fibrous materials.