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:
Jul. 17, 2007
Filed:
Jan. 25, 2005
Takashi Miyazawa, Tokyo, JP;
Yutaka Kurose, Tokyo, JP;
Takashi Miyazawa, Tokyo, JP;
Yutaka Kurose, Tokyo, JP;
Mitsubishi Chemical Corporation, Tokyo, JP;
Abstract
An organic dye type optical recording medium capable of recording or reading information by a blue laser having a shorter wavelength, is provided. An optical recording medium comprising a substrate and a recording layer capable of recording or reading information by a laser, formed on the substrate, characterized in that the recording layer contains a compound represented by the following formula (1): wherein each of Rto Rwhich are independent of one another, is a hydrogen atom or a linear or branched alkyl group which may be substituted, each of k and n which are independent of each other, is an integer of from 0 to 2, provided 0≦k+n≦4, each of l and m which are independent of each other, is 0 or 1, provided 1≦l+m≦2, each of rings A and B which are independent of each other, is an aromatic ring which may have optional substituents, provided that such optional substituents may be bonded to each other to form a ring.