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. 10, 1984
Filed:
Nov. 24, 1981
Applicant:
Inventors:
Yutaka Shibahashi, Midori-ku, Nagoya-shi, Aichi, JP;
Norikazu Nakasuji, Aichi-gun, Aichi, JP;
Takashi Kataoka, Ishiodai, Kasugai-shi, Aichi, JP;
Hiroshi Inagaki, Aichi-gun, Aichi, JP;
Tsutomu Kito, Josai, Nishi-ku, Nagoya-shi, Aichi, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09D / ;
U.S. Cl.
CPC ...
106 21 ; 427148 ; 427150 ;
Abstract
A thermochromic material is described which comprises (a) an electron-donating, chromatic organic compound, (b) a compound capable of reversibly accepting an electron or electrons from the electron-donating, chromatic organic compound, (c) a compound controlling the temperature and sensitivity of coloration/decoloration of the thermochromic material and (d) a N-radical, P-radical, O-radical or S-radical cationic compound having an aromatic ring or rings which improves by light-fastness.