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:
Mar. 03, 1981
Filed:
Mar. 13, 1979
Applicant:
Inventors:
Gunther Baatz, Buxheim, DE;
Walter Schafer, Cologne, DE;
Kurt Findeisen, Odenthal, DE;
Manfred Dahm, Leverkusen, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41M / ; B41M / ;
U.S. Cl.
CPC ...
282 275 ; 252316 ; 427150 ; 427151 ; 428307 ; 428537 ; 428914 ;
Abstract
Pressure-sensitive copying paper containing a solution of a dye-precursor agent in microencapsulated form, wherein the dye-precursor agent is dissolved in a hydrophobic organic solvent and encapsulated in capsules composed of the polyaddition product of a diisocyanate of Formula (I) ##STR1## wherein R represents a divalent aliphatic radical, and a diamine.