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. 13, 1982
Filed:
Feb. 25, 1980
Applicant:
Inventors:
Frank J Ragas, Willow Springs, IL (US);
Ralph L Minnis, Des Plaines, IL (US);
Gerson E Beauchamp, Park Ridge, IL (US);
Assignee:
DeSoto, Inc., Des Plaines, IL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428514 ; 162135 ; 162136 ; 428511 ; 427121 ; 524425 ; 524555 ;
Abstract
Electrically conductive paper is coated with an insulating coating to provide improved electrographic properties using a solvent-soluble copolymer comprising from 5% to 40% of copolymerized acrylamide or a monoethylenic derivative thereof. The coating is preferably pigmented with calcium carbonate, and the presence of the copolymerized acrylamide allows an increase in the pigment to binder ratio into the range of from 2:1 to 6:1.