Granted Patent
B2
US 7,425,401 · App. 10/566,258 · Granted Sep 16, 2008
Cyanine compounds, optical recording materials and optical recording media
Assignee:
Adeka Corporation
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Abstract
An optical recording medium containing a cyanine dyes of formula: Where at least one pair of R1 & R2 and R3 & R4 are benzyl moieties, rings A and B are each a benzene or naphthalene ring, Y1 and Y2 are C 1-30 organic groups and An m− is an m valent anion, present in an integer p.
Claims (3)
1. An optical recording medium comprising a substrate and a cyanine compound selected from the group consisting of the following:
and wherein the cyanine dye has a decomposition temperature of less then 247.9° C.
2. An optical recording medium comprising a thin film of the optical recording material of claim 1 on the substrate.
Assignments (2)
CHANGE OF NAME
Recorded Jul 19, 2007
From: ASAHI DENKA CO., LTD.
To: ADEKA CORPORATION
Reel/Frame 019580/0097 →
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Jan 30, 2006
From: YANO, TORU; SHIGENO, KOICHI; OKADA, MITSUHIRO
To: ASAHI DENKA CO., LTD.
Reel/Frame 017531/0596 →
Priority Claims (1)
JP 2003-289166
· Aug 7, 2003
· national
Continuity (1)