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:
Nov. 15, 1994
Filed:
Mar. 19, 1993
Applicant:
Inventors:
Ivan Sheiham, Marlow, GB;
Margaret P Templey, Thame, GB;
Assignee:
The Wiggins Teape Group Limited, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41M / ; C07D / ; C07D / ; C07C / ;
U.S. Cl.
CPC ...
503224 ; 503223 ; 544106 ; 544129 ; 546192 ; 546208 ; 564433 ; 548523 ; 548577 ;
Abstract
Pressure or heat sensitive record materials with color-former sublimation problems reduced or eliminated whilst not reducing the color forming capability per unit weight of color former by providing what are in effect dimers of vinyl carbinols, with the vinyl carbinol residues, linked through the aryl groups of a diaryl amine.
Sheiham, Ivan. (1994). Record material using vinyl carbinol color formers (U.S. Patent No. 5364830). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5364830
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile