US Patent Application No: 2008/0254,251

Number of patents in Portfolio can not be more than 2000

OPTICAL INFORMATION RECORDING MEDIUM AND METHOD OF RECORDING AND REPRODUCING INFORMATION

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Abstract

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The optical information recording medium comprises a recording layer on a surface of a support. The surface of the support has pregrooves with a track pitch ranging from 50 to 500 nm, and the recording layer comprises a phthalocyanine derivative denoted by general formula (I) and a compound denoted by general formula (II). In general formula (I), R.sup.1 denotes a substituent, n denotes an integer ranging from 1 to 16, and M denotes a metal atom optionally comprising a ligand, a metal oxide, or two hydrogen atoms. In general formula (II), R.sup.2 denotes a substituted or unsubstituted alkyl group having 1 to 18 carbon atoms or a substituted or unsubstituted aryl group having 4 to 24 carbon atoms, and m is an integer ranging from 1 to 4.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
FUJIFILM CORPORATIONTOKYO12348

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kakuta, Takeshi Kanagawa, JP 38 135
WATANABE, Tetsuya Kanagawa, JP 191 1484

Cited Art Landscape

Patent Info (Count) # Cites Year
 
CIBA SPECIALTY CHEMICALS CORP. (1)
* 6,087,492 Substituted phthalocyanines and their use 6 1999
 
LANXESS DEUTSCHLAND GMBH (1)
* 2002/0076,648 Optical data medium containing, in the information layer, a phthalocyanine dye as a light-absorbing compound 9 2001
 
YAMAMOTO CHEMICALS, INC. (1)
* 2003/0194,646 Optical recording medium and novel azaporphyrin compounds 39 2002
 
FUJI PHOTO FILM CO., LTD. (7)
* 5,879,772 Information recording medium 7 1997
* 5,998,094 Optical information recording medium 7 1998
* 6,203,876 Information recording medium 5 1999
* 6,506,539 Dye complex and optical information recording medium 6 2001
* 6,661,770 Optical information recording medium 11 2002
* 7,378,220 Optical information recording method and medium 1 2002
* 2003/0138,728 Optical information recording method and medium 0 2002
 
MITSUI CHEMICALS, INC. (1)
* 2003/0091,931 Benzbisazole compound and optical recording medium containing the compound 0 2002
* Cited By Examiner

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