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:
Feb. 09, 1999
Filed:
Jan. 30, 1997
Masafumi Torii, Shizuoka, JP;
Shoji Maruyama, Yokohama, JP;
Fumio Kawamura, Shizuoka, JP;
Hiromi Furuya, Shimizumachi, JP;
Kyoji Tsutsui, Mishima, JP;
Katsuhisa Kamio, Kakamigahara, JP;
Katsushi Sugiyama, Inzai, JP;
Kazuo Hosoda, Miyashiromachi, JP;
Masatake Kawashima, Funabashi, JP;
Masafumi Moriya, Kasukabe, JP;
Hiroaki Matsui, Numazu, JP;
Masaru Shimada, Shizuoka-Ken, JP;
Richo Company, Ltd., Tokyo, JP;
Miyoshi Yushi Kabushiki Kaisha, Tokyo, JP;
Abstract
A thermally reversible color forming composition which includes an electron-donating chromophoric compound and an electron-accepting compound, by which formation and deletion of a color image may be carried out by adjusting thermal energy applied to the composition, wherein the electron-accepting compound is a carboxylic acid compound having the following general formula (1):