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:
Dec. 01, 1981
Filed:
Jul. 29, 1980
Applicant:
Inventor:
Anthony E Vassiliades, Cincinnati, OH (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B41L / ;
U.S. Cl.
CPC ...
428207 ; 282 275 ; 427150 ; 427151 ; 427152 ; 427261 ; 428211 ; 428307 ; 428342 ; 428537 ; 428914 ;
Abstract
A pressure-sensitive chromogenic copy system utilizing a color developer capable of reacting with a chromogen to form a color image, said color developer comprising sulfur, sulfonyl, or sulfone derivatives of substituted aromatic carboxylic acids, preferably hydroxybenzoic acids.
Vassiliades, Anthony. (1981). Chromogenic copy system (U.S. Patent No. 4303719). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4303719
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile