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:
Apr. 19, 2011
Filed:
Jan. 04, 2007
Yoshiaki Kobuke, Ikoma, JP;
Kazuya Ogawa, Ikoma, JP;
Yoshiaki Kobuke, Ikoma, JP;
Kazuya Ogawa, Ikoma, JP;
Abstract
Compounds described herein are suitable for use in three-dimensional optical recording materials, etc. The compounds each have a structure that allows pi-electron conjugation to be achieved by linking a porphyrin ring and a perinaphthothioindigo ring to each other with a straight-chain atomic group. The compounds are suitable for use in three-dimensional optical recording materials, etc. since they have a high two-photon absorption efficiency and undergo photochromism effectively through optical absorption. The compounds include those represented by the following formula ():P—[Y]—P  (1)where Pcorresponds to a porphyrin ring; Pcorresponds to a perinaphthothioindigo ring a hydrogen atom, or a halogen atom; and Y is a group that links Pand P.