OPTICAL INFORMATION RECORDING MEDIUM AND METHOD OF RECORDING AND REPRODUCING INFORMATION

Number of patents in Portfolio can not be more than 2000

United States of America Patent

APP PUB NO 20080254251A1
SERIAL NO

12100439

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ATTORNEY / AGENT: (SPONSORED)

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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 CORPORATIONTOKYO12503

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kakuta, Takeshi Kanagawa, JP 38 137
WATANABE, Tetsuya Kanagawa, JP 196 1583

Cited Art Landscape

Patent Info (Count) # Cites Year
 
CIBA SPECIALTY CHEMICALS CORP. (1)
* 6087492 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)
* 5879772 Information recording medium 7 1997
* 5998094 Optical information recording medium 7 1998
* 6203876 Information recording medium 5 1999
* 6506539 Dye complex and optical information recording medium 6 2001
* 6661770 Optical information recording medium 11 2002
* 7378220 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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