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. 20, 1997
Filed:
Aug. 04, 1995
Tsuneyoshi Tanizawa, Tokuyama, JP;
Takashi Kobayakawa, Tokuyama, JP;
Tokuyama Corporation, Tokuyama, JP;
Abstract
A fulgimide compound which reversibly changes from a colorless state into a colored state upon the action of light including ultraviolet-rays, and a composition containing this compound. The fulgimide compound is represented by the following formula (I), ##STR1## wherein the following formula (a) ##STR2## represents a divalent aromatic hydrocarbon or a divalent unsaturated heterocyclic group which may have a substituent, respectively, R.sup.1 represents a monovalent hydrocarbon group or a monovalent heterocyclic group which may have a substituent, respectively, and the following formula (b), ##STR3## represents a norbornylidene group, bicyclo[3,3,1]nonylidene group or adamantylidene group which may have a substituent, respectively, and R.sup.2 is a perhalogenoalkyl group, cyano group, alkoxycarbonyl group that may have a substitutent, alkylcarbonyl group that may have a substituent, arylcarbonyl group that may have a substituent, nitro group, sulfonyl group, alkylsulfonyl group that may have a substituent, arylsulfonyl group that may have a substituent or aryloxycarbonyl group that may have a substituent.