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:
Aug. 05, 2008
Filed:
Feb. 10, 2005
Katsuhira Yoshida, Kochi, JP;
Yousuke Ooyama, Kochi, JP;
Katsuhira Yoshida, Kochi, JP;
Yousuke Ooyama, Kochi, JP;
Kochi University, Kochi, JP;
Abstract
The present invention provides heteropolycyclic compounds represented by General Formulae (1) and (2): wherein Ris a straight- or branched-chain C-Calkyl group or the like; Rand Rare the same or different and are each a straight- or branched-chain C-Calkyl group or the like; Rand Rare each a hydrogen atom; X is —OH or the like; X' is a straight- or branched-chain C-Calkyl group or the like; and Z is —O— or the like. The heteropolycyclic compounds of the present invention have appropriate optical absorption wavelengths and fluorescence wavelengths and a high luminescence intensity, and can be advantageously used in various applications as colorants that have excellent performance in terms of heat resistance, light resistance, solubility, dispersibility in resist materials, solid luminescence, etc.