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:
Jan. 29, 1980
Filed:
Feb. 11, 1977
Applicant:
Inventors:
James H Astbury, Stockport, GB;
Barrie Broadbent, Stockport, GB;
Assignee:
CIBA-GEIGY Corporation, Ardsley, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41M / ;
U.S. Cl.
CPC ...
428537 ; 282 275 ; 427150 ; 428364 ; 428488 ; 428914 ;
Abstract
An image producing system is provided, wherein an activator composition e.g. made up as a crayon or pencil, when contacted with paper substrate containing an azo color former yields an image by color change.
Quick Actions:
Astbury, James. (1980). Image producing system (U.S. Patent No. 4186243). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4186243
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile