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:
Dec. 19, 2000
Filed:
Sep. 08, 1998
Tsutami Misawa, Kanagawa, JP;
Taizo Nishimoto, Kanagawa, JP;
Hisashi Tsukahara, Kanagawa, JP;
Akira Ogiso, Kanagawa, JP;
Kenichi Sugimoto, Kanagawa, JP;
Kenji Mizoue, Kanagawa, JP;
Keisuke Takuma, Kanagawa, JP;
Kenichi Kato, Hyogo, JP;
Toshihiro Masaoka, Osaka, JP;
Yojiro Kumagae, Osaka, JP;
Mitsui Chemicals, Inc., , JP;
Yamamoto Chemicals, Inc., , JP;
Abstract
A novel optical recording medium having at least a recording layer and a reflective layer on a substrate is herein disclosed, wherein at least one dipyrromethene metal chelate compound represented by formula (1) is contained in the recording layer: ##STR1## wherein R.sub.1 and R.sub.9 are each independently an alkenyl group, an aryl group or a heteroaryl group; R.sub.2 to R.sub.8 are each independently a hydrogen atom, a halogen atom, or a substituted or unsubstituted alkyl, alkoxy, alkenyl, acyl, alkoxycarbonyl, aralkyl, aryl or heteroaryl group having 20 or less carbon atoms; and M is a transition metal.