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Shigeyoshi Misawa
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Information recording apparatus and method, information reproducing...
Patent number
8,081,394
Issue date
Dec 20, 2011
Ricoh Company, Ltd.
Migaku Takahashi
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Multilayer optical information recording medium, optical head, and...
Patent number
7,940,628
Issue date
May 10, 2011
Ricoh Company, Ltd.
Shigeyoshi Misawa
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Information recording method and apparatus using plasmonic transmis...
Patent number
7,826,174
Issue date
Nov 2, 2010
Ricoh Company, Ltd.
Migaku Takahashi
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Optical frequency comb generator
Patent number
7,239,442
Issue date
Jul 3, 2007
Japan Science and Technology Agency
Motonobu Kourogi
G02 - OPTICS
Information
Patent Grant
Imaging device
Patent number
5,907,438
Issue date
May 25, 1999
Ricoh Company, Ltd.
Kazuhiro Fujita
G02 - OPTICS
Information
Patent Grant
Wavelength conversion element
Patent number
5,481,636
Issue date
Jan 2, 1996
Ricoh Company, Ltd.
Hiroaki Fukuda
G02 - OPTICS
Information
Patent Grant
Apparatus for recording and reproducing optical information having...
Patent number
5,418,765
Issue date
May 23, 1995
Ricoh Company, Ltd.
Shigeyoshi Misawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Wavelength conversion element
Patent number
5,333,231
Issue date
Jul 26, 1994
Ricoh Company, Ltd.
Hiroaki Fukuda
G02 - OPTICS
Information
Patent Grant
Apparatus for recording and reproducing optical information and pri...
Patent number
5,235,589
Issue date
Aug 10, 1993
Ricoh Company, Ltd.
Kiyoshi Yokomori
G02 - OPTICS
Information
Patent Grant
Mode splitter and magneto-optical signal detection device
Patent number
5,208,800
Issue date
May 4, 1993
Ricoh Company, Ltd.
Tami Isobe
G02 - OPTICS
Information
Patent Grant
Focus detecting optical head
Patent number
5,195,071
Issue date
Mar 16, 1993
Ricoh Company, Ltd.
Hiroyoshi Funato
G11 - INFORMATION STORAGE
Information
Patent Grant
High efficiency prism coupling device and method for producing the...
Patent number
5,119,452
Issue date
Jun 2, 1992
Ricoh Company, Ltd.
Kiyoshi Yokomori
G02 - OPTICS
Information
Patent Grant
Waveguide type optical detection apparatus
Patent number
5,091,982
Issue date
Feb 25, 1992
Ricoh Company, Ltd.
Kiyoshi Yokomori
G02 - OPTICS
Information
Patent Grant
Optical information record/read apparatus
Patent number
4,971,414
Issue date
Nov 20, 1990
Ricoh Company, Ltd.
Hiroyoshi Funato
G02 - OPTICS
Information
Patent Grant
Monolithic optical pick-up using an optical waveguide
Patent number
4,876,680
Issue date
Oct 24, 1989
Ricoh Company, Ltd.
Shigeyoshi Misawa
G11 - INFORMATION STORAGE
Patents Applications
last 30 patents
Information
Patent Application
LIGHT SOURCE UNIT, ILLUMINATION DEVICE, AND PROJECTION DISPLAY APPA...
Publication number
20120044465
Publication date
Feb 23, 2012
Toshiharu MURAI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
INFORMATION RECORDING APPARATUS AND INFORMATION RECORDING METHOD, I...
Publication number
20110007582
Publication date
Jan 13, 2011
Migaku Takahashi
G11 - INFORMATION STORAGE
Information
Patent Application
Multilayer Optical Information Recording Medium, Optical Head, and...
Publication number
20080165652
Publication date
Jul 10, 2008
Shigeyoshi Misawa
G11 - INFORMATION STORAGE
Information
Patent Application
DYE MATERIAL, DYE SOLUTION AND MULTIPHOTON ABSORPTION REACTION MATE...
Publication number
20080092310
Publication date
Apr 24, 2008
Takeshi Miki
B22 - CASTING POWDER METALLURGY
Information
Patent Application
Information recording apparatus and information recording method, i...
Publication number
20070230233
Publication date
Oct 4, 2007
Migaku Takahashi
G11 - INFORMATION STORAGE
Information
Patent Application
Optical frequency comb generator
Publication number
20050018276
Publication date
Jan 27, 2005
Motonobu Kourogi
G02 - OPTICS