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Masayuki FUJIWARA
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Miyagi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Optical examination method and optical examination device
Patent number
10,292,590
Issue date
May 21, 2019
Ricoh Company, Ltd.
Toshihiro Ishii
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Optical sensor, optical examination device, and optical property de...
Patent number
10,177,530
Issue date
Jan 8, 2019
Ricoh Company, Ltd.
Toshihiro Ishii
G01 - MEASURING TESTING
Information
Patent Grant
Optical sensor, optical inspection device, and optical property det...
Patent number
10,067,056
Issue date
Sep 4, 2018
Ricoh Company, Ltd.
Masayuki Fujiwara
G01 - MEASURING TESTING
Information
Patent Grant
Optical recording medium, and sputtering target and method for prod...
Patent number
8,227,067
Issue date
Jul 24, 2012
Ricoh Company, Ltd.
Yoshitaka Hayashi
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Write-once-read-many optical recording medium
Patent number
8,163,366
Issue date
Apr 24, 2012
Ricoh Company, Ltd.
Toshishige Fujii
G11 - INFORMATION STORAGE
Information
Patent Grant
Worm optical recording medium
Patent number
8,147,942
Issue date
Apr 3, 2012
Ricoh Company, Ltd.
Noboru Sasa
G11 - INFORMATION STORAGE
Information
Patent Grant
Sputtering target and manufacturing method therefor, and recordable...
Patent number
8,124,212
Issue date
Feb 28, 2012
Ricoh Company, Ltd.
Yoshitaka Hayashi
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Optical recording medium, sputtering target, and method for manufac...
Patent number
8,124,211
Issue date
Feb 28, 2012
Ricoh Company, Ltd.
Noboru Sasa
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Sputtering target and manufacturing method therefor, and recordable...
Patent number
7,897,535
Issue date
Mar 1, 2011
Ricoh Company, Ltd.
Yoshitaka Hayashi
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Sputtering target and manufacturing method therefor, and optical re...
Patent number
7,488,526
Issue date
Feb 10, 2009
Ricoh Company, Ltd.
Yoshitaka Hayashi
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Patents Applications
last 30 patents
Information
Patent Application
OPTICAL SENSOR, OPTICAL EXAMINATION DEVICE, AND OPTICAL PROPERTY DE...
Publication number
20170179682
Publication date
Jun 22, 2017
RICOH COMPANY, LTD.
Toshihiro ISHII
G01 - MEASURING TESTING
Information
Patent Application
OPTICAL EXAMINATION METHOD AND OPTICAL EXAMINATION DEVICE
Publication number
20160360966
Publication date
Dec 15, 2016
RICOH COMPANY, LTD.
Toshihiro ISHII
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Application
OPTICAL SENSOR, OPTICAL INSPECTION DEVICE, AND OPTICAL PROPERTY DET...
Publication number
20160195473
Publication date
Jul 7, 2016
Masayuki FUJIWARA
G01 - MEASURING TESTING
Information
Patent Application
SPUTTERING TARGET AND MANUFACTURING METHOD THEREFOR, AND RECORDABLE...
Publication number
20110143075
Publication date
Jun 16, 2011
RICOH COMPANY, LTD.
Yoshitaka Hayashi
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Application
OPTICAL RECORDING MEDIUM, SPUTTERING TARGET, AND METHOD FOR MANUFAC...
Publication number
20100055375
Publication date
Mar 4, 2010
RICOH COMPANY, LTD.
Noboru Sasa
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Application
RECORDABLE OPTICAL RECORDING MEDIUM AND RECORDING METHOD THEREOF
Publication number
20100020668
Publication date
Jan 28, 2010
RICOH COMPANY LTD.
Shinya Narumi
G11 - INFORMATION STORAGE
Information
Patent Application
WRITE-ONCE-READ-MANY OPTICAL RECORDING MEDIUM AND RECORDING METHOD...
Publication number
20100014394
Publication date
Jan 21, 2010
RICOH COMPANY, LTD.
Masayuki Fujiwara
G11 - INFORMATION STORAGE
Information
Patent Application
OPTICAL RECORDING MEDIUM, AND SPUTTERING TARGET AND METHOD FOR PROD...
Publication number
20100003446
Publication date
Jan 7, 2010
Yoshitaka Hayashi
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Application
WORM OPTICAL RECORDING MEDIUM
Publication number
20090197117
Publication date
Aug 6, 2009
Noboru Sasa
G11 - INFORMATION STORAGE
Information
Patent Application
Optical recording medium
Publication number
20090022932
Publication date
Jan 22, 2009
Toshishige Fujii
G11 - INFORMATION STORAGE
Information
Patent Application
Write-Once-Read-Many Optical Recording Medium
Publication number
20090011169
Publication date
Jan 8, 2009
Toshishige Fujii
G11 - INFORMATION STORAGE
Information
Patent Application
Dual-layer recordable optical recording medium
Publication number
20070237064
Publication date
Oct 11, 2007
Toshishige Fujii
G11 - INFORMATION STORAGE
Information
Patent Application
Sputtering target and manufacturing method therefor, and recordable...
Publication number
20070218239
Publication date
Sep 20, 2007
Yoshitaka Hayashi
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Application
Sputtering target and manufacturing method therefor, and optical re...
Publication number
20070114129
Publication date
May 24, 2007
Yoshitaka Hayashi
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Application
Write-onece-read-many optical recording medium, sputtering target a...
Publication number
20060222810
Publication date
Oct 5, 2006
Yoshitaka Hayashi
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...