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. 07, 1976
Filed:
Jan. 09, 1975
Applicant:
Inventors:
Minoru Ozutsumi, Tokyo, JA;
Yoshihide Miyazawa, Tokyo, JA;
Katsuichi Motohashi, Tokyo, JA;
Masatake Kiritani, Fujimiya, JA;
Akio Watanabe, Fujimiya, JA;
Assignees:
Fuji Photo Film Co., Ltd., Minami-ashigara, JA;
Hodogaya Chemical Co., Ltd., Tokyo, JA;
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
2602 / ; 260335 ;
Abstract
A pressure-sensitive copying paper comprising an adsorbent solid acid and a microencapsulated color former capable of forming a distinct color when reacted with the adsorbent acid coated on the same or a different surface of a support or supports, the microencapsulated color former being at least one fluoran compound represented by the formula; ##STR1## WHEREIN R.sub.1, R.sub.2, Z, m and ##STR2## are as defined hereinafter, is disclosed.