Nobuo Sakuma

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Projection optical system, magnification projection optical system,...
- Patent number RE48309
- Issue date Nov 17, 2020
- Ricoh Company, Ltd.
- Atsushi Takaura
Information Patent Grant
Projection optical system, magnification projection optical system,...
- Patent number RE45728
- Issue date Oct 6, 2015
- Ricoh Company, Ltd.
- Atsushi Takaura
- 001 -
Information Patent Grant
Projection optical system, magnification projection optical system,...
- Patent number RE45258
- Issue date Nov 25, 2014
- Ricoh Company, Ltd.
- Atsushi Takaura
- 353 - Optics: image projectors
Information Patent Grant
Projection optical system, magnification projection optical system,...
- Patent number 7,938,545
- Issue date May 10, 2011
- Ricoh Company, Ltd.
- Atsushi Takaura
- G02 - OPTICS
Information Patent Grant
Projection optical system, magnification projection optical system,...
- Patent number 7,922,341
- Issue date Apr 12, 2011
- Ricoh Company, Ltd.
- Atsushi Takaura
- G02 - OPTICS
Information Patent Grant
Light emitting array with improved characteristics, optical writing...
- Patent number 7,705,868
- Issue date Apr 27, 2010
- Ricoh Company, Ltd.
- Koji Masuda
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Projection optical system, magnification projection optical system,...
- Patent number 7,637,621
- Issue date Dec 29, 2009
- Ricoh Company, Ltd.
- Atsushi Takaura
- G02 - OPTICS
Information Patent Grant
Projection optical system, magnification projection optical system,...
- Patent number 7,637,618
- Issue date Dec 29, 2009
- Ricoh Company, Ltd.
- Atsushi Takaura
- G02 - OPTICS
Information Patent Grant
Projection optical system, magnification projection optical system,...
- Patent number 7,631,975
- Issue date Dec 15, 2009
- Ricoh Company, Ltd.
- Atsushi Takaura
- G02 - OPTICS
Information Patent Grant
Projection optical system, magnification projection optical system,...
- Patent number 7,441,908
- Issue date Oct 28, 2008
- Ricoh Company, Ltd.
- Atsushi Takaura
- G02 - OPTICS
Information Patent Grant
Projection optical system, magnification projection optical system,...
- Patent number 7,048,388
- Issue date May 23, 2006
- Ricoh Company, Ltd.
- Atsushi Takaura
- G02 - OPTICS
Information Patent Grant
Virtual screen display device
- Patent number 6,545,803
- Issue date Apr 8, 2003
- Ricoh Company, Ltd.
- Nobuo Sakuma
- G02 - OPTICS
Information Patent Grant
Virtual screen display device
- Patent number 6,292,305
- Issue date Sep 18, 2001
- Ricoh Company, Ltd.
- Nobuo Sakuma
- G02 - OPTICS
Information Patent Grant
Multiple-beam optical recording apparatus
- Patent number 5,970,034
- Issue date Oct 19, 1999
- Ricoh Company, Ltd.
- Nobuo Sakuma
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Method and device for determining fiber orientation of paper, and a...
- Patent number 5,852,499
- Issue date Dec 22, 1998
- Ricoh Company, Ltd.
- Kan Tomita
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Method and device for determining fiber orientation of paper, and a...
- Patent number 5,729,349
- Issue date Mar 17, 1998
- Ricoh Company, Ltd.
- Kan Tomita
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Optical scanner and polygon mirror
- Patent number 5,666,220
- Issue date Sep 9, 1997
- Ricoh Company, Ltd.
- Nobuo Sakuma
- G02 - OPTICS
Information Patent Grant
Edge emitting type light emitting diode array heads
- Patent number 5,606,181
- Issue date Feb 25, 1997
- Ricoh Company, Ltd.
- Nobuo Sakuma
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Optical scanner
- Patent number 5,426,298
- Issue date Jun 20, 1995
- Ricoh Company, Ltd.
- Nobuo Sakuma
- G02 - OPTICS
Information Patent Grant
Optical scanner having an image forming mirror and means for reduci...
- Patent number 5,408,095
- Issue date Apr 18, 1995
- Ricoh Company, Ltd.
- Hiromichi Atsuumi
- G02 - OPTICS
Information Patent Grant
Optical scanning system
- Patent number 5,373,390
- Issue date Dec 13, 1994
- Ricoh Company, Ltd.
- Nobuo Sakuma
- G02 - OPTICS
Information Patent Grant
Image forming reflecting mirror for constant speed optical scan and...
- Patent number 5,233,454
- Issue date Aug 3, 1993
- Ricoh Company, Ltd.
- Nobuo Sakuma
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Scanning optical system
- Patent number 5,233,455
- Issue date Aug 3, 1993
- Ricoh Company, Ltd.
- Katsumi Yamaguchi
- G02 - OPTICS
Information Patent Grant
Return optical deflecting element, optical deflecting element and o...
- Patent number 5,170,278
- Issue date Dec 8, 1992
- Ricoh Company, Ltd.
- Yoshishige Wada
- G02 - OPTICS
Information Patent Grant
Optical scanner
- Patent number 5,157,534
- Issue date Oct 20, 1992
- Ricoh Company, Ltd.
- Osamu Endou
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Scanning optical system
- Patent number 5,155,616
- Issue date Oct 13, 1992
- Ricoh Company, Ltd.
- Katsumi Yamaguchi
- G02 - OPTICS
Information Patent Grant
Scanning lens and scanning apparatus using scanning lens
- Patent number 5,128,795
- Issue date Jul 7, 1992
- Ricoh Company, Ltd.
- Osamu Endou
- G02 - OPTICS
Information Patent Grant
Optical scanning system
- Patent number 5,005,928
- Issue date Apr 9, 1991
- Ricoh Company, Ltd.
- Seizo Suzuki
- G02 - OPTICS
Information Patent Grant
Scanning optical system
- Patent number 4,955,682
- Issue date Sep 11, 1990
- Ricoh Company, Ltd.
- Katsumi Yamaguchi
- G02 - OPTICS
Information Patent Grant
Semiconductor laser source unit
- Patent number 4,953,171
- Issue date Aug 28, 1990
- Ricoh Company, Ltd.
- Tomohiro Nakajima
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
METHOD AND APPARATUS FOR IMAGE CAPTURING CAPABLE OF EFFECTIVELY REP...
- Publication number 20120140097
- Publication date Jun 7, 2012
- Nobuhiro Morita
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
PROJECTION OPTICAL SYSTEM, MAGNIFICATION PROJECTION OPTICAL SYSTEM,...
- Publication number 20110038039
- Publication date Feb 17, 2011
- Atsushi Takaura
- G02 - OPTICS
Information Patent Application
PROJECTION OPTICAL SYSTEM, MAGNIFICATION PROJECTION OPTICAL SYSTEM,...
- Publication number 20100039625
- Publication date Feb 18, 2010
- Atsushi Takaura
- G02 - OPTICS
Information Patent Application
PROJECTION OPTICAL SYSTEM, MAGNIFICATION PROJECTION OPTICAL SYSTEM,...
- Publication number 20090021703
- Publication date Jan 22, 2009
- Atsushi Takaura
- G02 - OPTICS
Information Patent Application
PROJECTION OPTICAL SYSTEM, MAGNIFICATION PROJECTION OPTICAL SYSTEM,...
- Publication number 20090015910
- Publication date Jan 15, 2009
- Atsushi Takaura
- G02 - OPTICS
Information Patent Application
PROJECTION OPTICAL SYSTEM, MAGNIFICATION PROJECTION OPTICAL SYSTEM,...
- Publication number 20080304019
- Publication date Dec 11, 2008
- Atsushi Takaura
- G02 - OPTICS
Information Patent Application
Method and apparatus for image capturing capable of effectively rep...
- Publication number 20070285553
- Publication date Dec 13, 2007
- Nobuhiro Morita
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Projection optical system, magnification projection optical system,...
- Publication number 20060126032
- Publication date Jun 15, 2006
- Atsushi Takaura
- G02 - OPTICS
Information Patent Application
Light emitting array with improved characteristics, optical writing...
- Publication number 20050067944
- Publication date Mar 31, 2005
- RICOH CO., LTD.
- Koji Masuda
- G02 - OPTICS
Information Patent Application
Projection optical system, magnification projection optical system,...
- Publication number 20040156117
- Publication date Aug 12, 2004
- Atsushi Takaura
- G02 - OPTICS

Nobuo Sakuma

Person

Patents Grantslast 30 patents

Projection optical system, magnification projection optical system,...

Projection optical system, magnification projection optical system,...

Projection optical system, magnification projection optical system,...

Projection optical system, magnification projection optical system,...

Projection optical system, magnification projection optical system,...

Light emitting array with improved characteristics, optical writing...

Projection optical system, magnification projection optical system,...

Projection optical system, magnification projection optical system,...

Projection optical system, magnification projection optical system,...

Projection optical system, magnification projection optical system,...

Projection optical system, magnification projection optical system,...

Virtual screen display device

Virtual screen display device

Multiple-beam optical recording apparatus

Method and device for determining fiber orientation of paper, and a...

Method and device for determining fiber orientation of paper, and a...

Optical scanner and polygon mirror

Edge emitting type light emitting diode array heads

Optical scanner

Optical scanner having an image forming mirror and means for reduci...

Optical scanning system

Image forming reflecting mirror for constant speed optical scan and...

Scanning optical system

Return optical deflecting element, optical deflecting element and o...

Optical scanner

Scanning optical system

Scanning lens and scanning apparatus using scanning lens

Optical scanning system

Scanning optical system

Semiconductor laser source unit

Patents Applicationslast 30 patents

METHOD AND APPARATUS FOR IMAGE CAPTURING CAPABLE OF EFFECTIVELY REP...

PROJECTION OPTICAL SYSTEM, MAGNIFICATION PROJECTION OPTICAL SYSTEM,...

PROJECTION OPTICAL SYSTEM, MAGNIFICATION PROJECTION OPTICAL SYSTEM,...

PROJECTION OPTICAL SYSTEM, MAGNIFICATION PROJECTION OPTICAL SYSTEM,...

PROJECTION OPTICAL SYSTEM, MAGNIFICATION PROJECTION OPTICAL SYSTEM,...

PROJECTION OPTICAL SYSTEM, MAGNIFICATION PROJECTION OPTICAL SYSTEM,...

Method and apparatus for image capturing capable of effectively rep...

Projection optical system, magnification projection optical system,...

Light emitting array with improved characteristics, optical writing...

Projection optical system, magnification projection optical system,...