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:
May. 25, 1976
Filed:
May. 21, 1974
Applicant:
Inventors:
Masakichi Yahagi, Tokyo, JA;
Shoichi Horiuchi, Fujimi, JA;
Takahumi Toyama, Tokyo, JA;
Akio Kashiwagi, Ageo, JA;
Teruo Suzuki, Tokyo, JA;
Tetsuo Igaki, Kawagoe, JA;
Kazuyuki Horisawa, Tokyo, JA;
Mituhiro Shoji, Tokyo, JA;
Assignee:
Shin Nisso Kako Co., Ltd., Tokyo, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41M / ;
U.S. Cl.
CPC ...
428537 ; 2602 / ; 2602 / ; 26029358 ; 2603263 ; 260335 ; 2603 / ; 282 275 ; 427151 ;
Abstract
A recording material which is suitable as a pressure-sensitive or heat-sensitive copying paper or recording paper by developing a color in contact with an electron-accepting material which comprises certain fluoran derivatives containing piperidino, pyrrolidino, morpholino and cycohexylamino groups.
Yahagi, Masakichi. (1976). Chromogenic fluoran derivatives and the preparation and use thereof (U.S. Patent No. 3959571). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3959571
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile