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Hiroyoshi Funato
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Kanagawa, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Moving-member detecting device and image forming apparatus
Patent number
9,983,531
Issue date
May 29, 2018
Ricoh Company, Limited
Koichi Kudo
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Object detection apparatus with detection based on reflected light...
Patent number
9,304,228
Issue date
Apr 5, 2016
Ricoh Company, Ltd.
Tadashi Nakamura
G01 - MEASURING TESTING
Information
Patent Grant
Laser radar device
Patent number
9,188,674
Issue date
Nov 17, 2015
Ricoh Company, Ltd.
Shuichi Suzuki
G01 - MEASURING TESTING
Information
Patent Grant
Velocity detecting device and multi-color image forming apparatus
Patent number
8,587,774
Issue date
Nov 19, 2013
Ricoh Company, Ltd.
Hiroyoshi Funato
G01 - MEASURING TESTING
Information
Patent Grant
Optical scanning device and image forming apparatus
Patent number
8,373,736
Issue date
Feb 12, 2013
Ricoh Company, Ltd.
Hiroyoshi Funato
G02 - OPTICS
Information
Patent Grant
Optical scanning device
Patent number
8,045,249
Issue date
Oct 25, 2011
Ricoh Company, Ltd.
Masanori Kobayashi
G02 - OPTICS
Information
Patent Grant
Optical delay element
Patent number
7,242,839
Issue date
Jul 10, 2007
Ricoh Company, Ltd.
Atsushi Sakai
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Optical pickup apparatus, optical data recording/reproducing appara...
Patent number
7,177,258
Issue date
Feb 13, 2007
Ricoh Company, Ltd.
Shigeru Ohuchida
G11 - INFORMATION STORAGE
Information
Patent Grant
Diffraction grating, light source unit applying the same therein, a...
Patent number
7,164,532
Issue date
Jan 16, 2007
Ricoh Company, Ltd.
Hiroyoshi Funato
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical apparatus for recording/reproducing and reading/reproducing...
Patent number
6,876,621
Issue date
Apr 5, 2005
Ricoh Company, Ltd.
Shigeru Ohuchida
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical pickup unit and optical disk drive for accurate and stable...
Patent number
6,822,771
Issue date
Nov 23, 2004
Ricoh Company, Ltd.
Hiroyoshi Funato
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical pickup method, optical pickup device, and optical informati...
Patent number
6,754,162
Issue date
Jun 22, 2004
Ricoh Company, Ltd.
Kazuhiro Fujita
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical pickup apparatus having improved holographic optical elemen...
Patent number
6,618,344
Issue date
Sep 9, 2003
Ricoh Company, Ltd.
Hiroyoshi Funato
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical pickup apparatus having improved holographic optical elemen...
Patent number
6,072,579
Issue date
Jun 6, 2000
Ricoh Company, Ltd.
Hiroyoshi Funato
G02 - OPTICS
Information
Patent Grant
Optical head with forward and reflected light beams propagating thr...
Patent number
5,684,779
Issue date
Nov 4, 1997
Ricoh Company, Ltd.
Shigeru Ohuchida
G11 - INFORMATION STORAGE
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
Optical recording system capable of changing the beam size
Patent number
5,402,154
Issue date
Mar 28, 1995
Ricoh Company, Ltd.
Takashi Shibaguchi
G02 - OPTICS
Information
Patent Grant
Optical movement measuring method and apparatus using interference...
Patent number
5,355,220
Issue date
Oct 11, 1994
Ricoh Company, Ltd.
Hiroshi Kobayashi
G01 - MEASURING TESTING
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
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
Light source unit capable of changing size of light beam spot and o...
Patent number
5,175,642
Issue date
Dec 29, 1992
Ricoh Company, Ltd.
Hiroyoshi Funato
G02 - OPTICS
Information
Patent Grant
Optical scanning apparatus
Patent number
5,124,835
Issue date
Jun 23, 1992
Ricoh Company, Ltd.
Takashi Shibaguchi
G02 - OPTICS
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
Apparatus for converting optical information into electrical inform...
Patent number
5,079,415
Issue date
Jan 7, 1992
Ricoh Company, Ltd.
Yutaka Hayashi
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Recording optical system
Patent number
5,031,978
Issue date
Jul 16, 1991
Ricoh Company, Ltd.
Takashi Shibaguchi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Rotation quantity measuring method and system
Patent number
4,987,299
Issue date
Jan 22, 1991
Ricoh Company, Ltd.
Hiroshi Kobayashi
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
Information
Patent Grant
Laser beam recording method
Patent number
4,761,046
Issue date
Aug 2, 1988
Ricoh Company, Ltd.
Hiroyoshi Funato
G06 - COMPUTING CALCULATING COUNTING
Patents Applications
last 30 patents
Information
Patent Application
MOVING-MEMBER DETECTING DEVICE AND IMAGE FORMING APPARATUS
Publication number
20140044460
Publication date
Feb 13, 2014
RICOH COMPANY, LIMITED
Koichi KUDO
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
OBJECT DETECTION APPARATUS
Publication number
20140034817
Publication date
Feb 6, 2014
Tadashi NAKAMURA
G02 - OPTICS
Information
Patent Application
LASER RADAR DEVICE
Publication number
20140009747
Publication date
Jan 9, 2014
RICOH COMPANY, LTD.
Shuichi SUZUKI
G01 - MEASURING TESTING
Information
Patent Application
VELOCITY DETECTING DEVICE AND MULTI-COLOR IMAGE FORMING APPARATUS
Publication number
20100310284
Publication date
Dec 9, 2010
Hiroyoshi Funato
G01 - MEASURING TESTING
Information
Patent Application
OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS
Publication number
20100034563
Publication date
Feb 11, 2010
Hiroyoshi Funato
G02 - OPTICS
Information
Patent Application
OPTICAL SCANNING DEVICE
Publication number
20080297870
Publication date
Dec 4, 2008
RICOH COMPANY, LTD.
Masanori KOBAYASHI
G02 - OPTICS
Information
Patent Application
Optical delay element
Publication number
20060083472
Publication date
Apr 20, 2006
Atsushi Sakai
G02 - OPTICS
Information
Patent Application
Hologram element, production method thereof, and optical header
Publication number
20060055993
Publication date
Mar 16, 2006
Masanori Kobayashi
G02 - OPTICS
Information
Patent Application
Optical pickup apparatus, optical data recording/reproducing appara...
Publication number
20050058051
Publication date
Mar 17, 2005
Shigeru Ohuchida
G11 - INFORMATION STORAGE
Information
Patent Application
Diffraction grating, method of producing it, method of duplicating...
Publication number
20040213133
Publication date
Oct 28, 2004
Hiroyoshi Funato
G11 - INFORMATION STORAGE
Information
Patent Application
Optical pickup apparatus having improved holographic optical elemen...
Publication number
20040017760
Publication date
Jan 29, 2004
Hiroyoshi Funato
G02 - OPTICS
Information
Patent Application
Diffraction grating, light source unit applying the same therein, a...
Publication number
20040013076
Publication date
Jan 22, 2004
Hiroyoshi Funato
G11 - INFORMATION STORAGE
Information
Patent Application
Optical pickup unit and optical disk drive for accurate and stable...
Publication number
20030072047
Publication date
Apr 17, 2003
Hiroyoshi Funato
G11 - INFORMATION STORAGE
Information
Patent Application
Optical pickup method, optical pickup device, and optical informati...
Publication number
20020003755
Publication date
Jan 10, 2002
Ricoh Company, Ltd.
Kazuhiro Fujita
G11 - INFORMATION STORAGE
Information
Patent Application
Optical pickup apparatus, optical data recording/reproducing appara...
Publication number
20010026523
Publication date
Oct 4, 2001
Shigeru Ohuchida
G11 - INFORMATION STORAGE