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. 04, 1983
Filed:
Apr. 05, 1982
Applicant:
Inventors:
Fred S Sadler, St. Jessup, PA (US);
Paul F Hettwer, Franksville, WI (US);
Vu H Viet, Franksville, WI (US);
Clarance R Acker, Zanesville, OH (US);
Assignee:
McGraw-Edison Company, Rolling Meadows, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
D21H / ; H05K / ;
U.S. Cl.
CPC ...
162137 ; 162138 ; 162158 ; 162174 ; 174 / ; 1741 / ; 427121 ; 427414 ; 428537 ; 4284744 ; 4284746 ;
Abstract
The invention relates to a method for improving the thermal stability and dielectric integrity of a cellulosic web product. The cellulosic web is impregnated with a nitrogen donor compound such that the web contains not less than 0.2% by weight of the compound and thereafter impregnated with an aqueous vegetable protein solution at a pH of not less than about 8.5.