Ikuo Maeda

Person

Kawasaki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Light source device and projector including a phosphor and a color-...
- Patent number 11,402,737
- Issue date Aug 2, 2022
- Ricoh Company, Ltd.
- Ikuo Maeda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Light source apparatus and image projection apparatus
- Patent number RE49040
- Issue date Apr 19, 2022
- Ricoh Company, Ltd.
- Ikuo Maeda
Information Patent Grant
Light source device that emits a plurality of color lights includin...
- Patent number 10,627,711
- Issue date Apr 21, 2020
- Ricoh Company, Ltd.
- Ikuo Maeda
- F21 - LIGHTING
Information Patent Grant
Light source apparatus and image projection apparatus
- Patent number RE47778
- Issue date Dec 24, 2019
- Ricoh Company, Ltd.
- Ikuo Maeda
Information Patent Grant
Light source device including a light source section to adjust brig...
- Patent number 10,191,361
- Issue date Jan 29, 2019
- Ricoh Company, Ltd.
- Ikuo Maeda
- G02 - OPTICS
Information Patent Grant
Light source apparatus and image projection apparatus
- Patent number RE46622
- Issue date Dec 5, 2017
- Ricoh Company, Ltd.
- Ikuo Maeda
Information Patent Grant
Light source device and projector using the same
- Patent number 9,726,966
- Issue date Aug 8, 2017
- Ricoh Company, Ltd.
- Ikuo Maeda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Illumination device including a wavelength converter
- Patent number 9,594,296
- Issue date Mar 14, 2017
- Ricoh Company, Ltd.
- Kazuhiro Fujita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Light source unit and image projection apparatus including light so...
- Patent number 9,557,631
- Issue date Jan 31, 2017
- Ricoh Company, Ltd.
- Takehiro Nishimori
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Illumination light source device including a reflecting-transmittin...
- Patent number 9,400,416
- Issue date Jul 26, 2016
- Ricoh Company, Ltd.
- Tatsuya Takahashi
- F21 - LIGHTING
Information Patent Grant
Light source unit and projector incorporating the same
- Patent number 9,348,200
- Issue date May 24, 2016
- Ricoh Company, Ltd.
- Tatsuya Takahashi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Light deflector, light source device, image projecting device, and...
- Patent number 9,279,566
- Issue date Mar 8, 2016
- Ricoh Company, Ltd.
- Takehiro Nishimori
- F21 - LIGHTING
Information Patent Grant
Light source unit and image projection apparatus including light so...
- Patent number 9,250,504
- Issue date Feb 2, 2016
- Ricoh Company, Ltd.
- Takehiro Nishimori
- F21 - LIGHTING
Information Patent Grant
Illumination light beam forming device, illumination light source d...
- Patent number 9,223,194
- Issue date Dec 29, 2015
- Ricoh Company, Ltd.
- Kazuhiro Fujita
- F21 - LIGHTING
Information Patent Grant
Illumination light source system, projector having the same, and me...
- Patent number 9,131,165
- Issue date Sep 8, 2015
- Ricoh Company, Ltd.
- Tatsuya Takahashi
- F21 - LIGHTING
Information Patent Grant
Illumination light generation apparatus
- Patent number 9,121,570
- Issue date Sep 1, 2015
- Ricoh Company, Ltd.
- Takehiro Nishimori
- F21 - LIGHTING
Information Patent Grant
Light source apparatus and image projection apparatus
- Patent number 8,974,064
- Issue date Mar 10, 2015
- Ricoh Company, Ltd.
- Ikuo Maeda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Compound lens imaging device
- Patent number 8,760,558
- Issue date Jun 24, 2014
- Ricoh Company, Ltd.
- Nobuhiro Morita
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Image projecting device and a prism with a curved reflection surface
- Patent number 8,529,072
- Issue date Sep 10, 2013
- Ricoh Company, Ltd.
- Ikuo Maeda
- G02 - OPTICS
Information Patent Grant
Scanning image displayer, mobile phone, mobile information processo...
- Patent number 8,432,595
- Issue date Apr 30, 2013
- Ricoh Company, Ltd.
- Ikuo Maeda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Polarization conversion element, polarization conversion optical sy...
- Patent number 7,995,275
- Issue date Aug 9, 2011
- Ricoh Company, Ltd.
- Ikuo Maeda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Polarization beam splitter and polarization conversion element
- Patent number 7,961,392
- Issue date Jun 14, 2011
- Ricoh Company, Ltd.
- Ikuo Maeda
- G02 - OPTICS
Information Patent Grant
Image device for forming an erected image
- Patent number 6,181,473
- Issue date Jan 30, 2001
- Ricoh Company, Ltd.
- Kazuhiro Fujita
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Imaging device
- Patent number 6,177,667
- Issue date Jan 23, 2001
- Ricoh Company, Ltd.
- Kazuhiro Fujita
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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
Apparatus and method for controlling a system bus of a multiprocess...
- Patent number 5,500,945
- Issue date Mar 19, 1996
- Fujitsu Limited
- Ikuo Maeda
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Multibeam optical pickup and servo method thereof
- Patent number 5,341,355
- Issue date Aug 23, 1994
- Ricoh Company, Ltd.
- Hiroshi Gotoh
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical information read/write apparatus
- Patent number 5,144,617
- Issue date Sep 1, 1992
- Ricoh Company, Ltd.
- Hiroshi Gotoh
- G11 - INFORMATION STORAGE
Information Patent Grant
Multi-beam optical pick-up
- Patent number 5,105,410
- Issue date Apr 14, 1992
- Ricoh Company, Ltd.
- Ikuo Maeda
- G11 - INFORMATION STORAGE
Information Patent Grant
Overwriting photomagnetic recording apparatus having single light s...
- Patent number 4,914,643
- Issue date Apr 3, 1990
- Ricoh Company, Ltd.
- Ikuo Maeda
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
LIGHT SOURCE DEVICE AND PROJECTOR USING THE SAME
- Publication number 20200201158
- Publication date Jun 25, 2020
- Ikuo MAEDA
- F21 - LIGHTING
Information Patent Application
LIGHT SOURCE DEVICE AND PROJECTOR USING THE SAME
- Publication number 20190129288
- Publication date May 2, 2019
- Ikuo MAEDA
- F21 - LIGHTING
Information Patent Application
LIGHT SOURCE DEVICE AND PROJECTOR USING THE SAME
- Publication number 20170299953
- Publication date Oct 19, 2017
- Ikuo MAEDA
- F21 - LIGHTING
Information Patent Application
LIGHT SOURCE DEVICE AND PROJECTOR USING THE SAME
- Publication number 20150316840
- Publication date Nov 5, 2015
- Ricoh Company, Ltd.
- Ikuo MAEDA
- F21 - LIGHTING
Information Patent Application
ILLUMINATION DEVICE, PROJECTOR, AND ILLUMINATION METHOD
- Publication number 20150253653
- Publication date Sep 10, 2015
- Kazuhiro Fujita
- G02 - OPTICS
Information Patent Application
LIGHT SOURCE UNIT AND PROJECTOR INCORPORATING THE SAME
- Publication number 20140268069
- Publication date Sep 18, 2014
- Tatsuya TAKAHASHI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
LIGHT SOURCE UNIT AND IMAGE PROJECTION APPARATUS INCLUDING LIGHT SO...
- Publication number 20140240679
- Publication date Aug 28, 2014
- RICOH COMPANY, LTD.
- Takehiro NISHIMORI
- F21 - LIGHTING
Information Patent Application
LIGHT SOURCE UNIT AND IMAGE PROJECTION APPARATUS INCLUDING LIGHT SO...
- Publication number 20140240680
- Publication date Aug 28, 2014
- Ricoh Company, Ltd.
- Takehiro NISHIMORI
- F21 - LIGHTING
Information Patent Application
ILLUMINATION LIGHT SOURCE DEVICE, PROJECTION DEVICE INCLUDING THE I...
- Publication number 20140071407
- Publication date Mar 13, 2014
- Tatsuya Takahashi
- F21 - LIGHTING
Information Patent Application
ILLUMINATION LIGHT SOURCE SYSTEM, PROJECTOR HAVING THE SAME, AND ME...
- Publication number 20140071408
- Publication date Mar 13, 2014
- Tatsuya TAKAHASHI
- G02 - OPTICS
Information Patent Application
ILLUMINATION LIGHT GENERATION APPARATUS
- Publication number 20140049755
- Publication date Feb 20, 2014
- RICOH COMPANY, LTD.
- Takehiro NISHIMORI
- G02 - OPTICS
Information Patent Application
LIGHT DEFLECTOR, LIGHT SOURCE DEVICE, IMAGE PROJECTING DEVICE, AND...
- Publication number 20140036241
- Publication date Feb 6, 2014
- RICOH COMPANY, LTD.
- Takehiro NISHIMORI
- G02 - OPTICS
Information Patent Application
ILLUMINATION LIGHT BEAM FORMING DEVICE, ILLUMINATION LIGHT SOURCE D...
- Publication number 20140028983
- Publication date Jan 30, 2014
- Kazuhiro FUJITA
- G02 - OPTICS
Information Patent Application
LIGHT SOURCE APPARATUS AND IMAGE PROJECTION APPARATUS
- Publication number 20130308104
- Publication date Nov 21, 2013
- Takehiro NISHIMORI
- F21 - LIGHTING
Information Patent Application
LIGHT SOURCE APPARATUS AND IMAGE PROJECTION APPARATUS
- Publication number 20120320355
- Publication date Dec 20, 2012
- RICOH COMPANY, LTD.
- Ikuo MAEDA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
SCANNING IMAGE DISPLAYER, MOBILE PHONE, MOBILE INFORMATION PROCESSO...
- Publication number 20110157668
- Publication date Jun 30, 2011
- Ikuo Maeda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
IMAGING DEVICE
- Publication number 20110134282
- Publication date Jun 9, 2011
- Nobuhiro MORITA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
IMAGE PROJECTING DEVICE AND PRISM
- Publication number 20110122374
- Publication date May 26, 2011
- Ikuo Maeda
- G02 - OPTICS
Information Patent Application
Polarization Conversion Element,Polarization Conversion Optical Sys...
- Publication number 20080278690
- Publication date Nov 13, 2008
- Ikuo Maeda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
POLARIZATION BEAM SPLITTER AND POLARIZATION CONVERSION ELEMENT
- Publication number 20080158673
- Publication date Jul 3, 2008
- Ikuo MAEDA
- G02 - OPTICS

Person

Patents Grantslast 30 patents

Light source device and projector including a phosphor and a color-...

Light source apparatus and image projection apparatus

Light source device that emits a plurality of color lights includin...

Light source apparatus and image projection apparatus

Light source device including a light source section to adjust brig...

Light source apparatus and image projection apparatus

Light source device and projector using the same

Illumination device including a wavelength converter

Light source unit and image projection apparatus including light so...

Illumination light source device including a reflecting-transmittin...

Light source unit and projector incorporating the same

Light deflector, light source device, image projecting device, and...

Light source unit and image projection apparatus including light so...

Illumination light beam forming device, illumination light source d...

Illumination light source system, projector having the same, and me...

Illumination light generation apparatus

Light source apparatus and image projection apparatus

Compound lens imaging device

Image projecting device and a prism with a curved reflection surface

Scanning image displayer, mobile phone, mobile information processo...

Polarization conversion element, polarization conversion optical sy...

Polarization beam splitter and polarization conversion element

Image device for forming an erected image

Imaging device

Imaging device

Apparatus and method for controlling a system bus of a multiprocess...

Multibeam optical pickup and servo method thereof

Optical information read/write apparatus

Multi-beam optical pick-up

Overwriting photomagnetic recording apparatus having single light s...

Patents Applicationslast 30 patents

LIGHT SOURCE DEVICE AND PROJECTOR USING THE SAME

LIGHT SOURCE DEVICE AND PROJECTOR USING THE SAME

LIGHT SOURCE DEVICE AND PROJECTOR USING THE SAME

LIGHT SOURCE DEVICE AND PROJECTOR USING THE SAME

ILLUMINATION DEVICE, PROJECTOR, AND ILLUMINATION METHOD

LIGHT SOURCE UNIT AND PROJECTOR INCORPORATING THE SAME

LIGHT SOURCE UNIT AND IMAGE PROJECTION APPARATUS INCLUDING LIGHT SO...

LIGHT SOURCE UNIT AND IMAGE PROJECTION APPARATUS INCLUDING LIGHT SO...

ILLUMINATION LIGHT SOURCE DEVICE, PROJECTION DEVICE INCLUDING THE I...

ILLUMINATION LIGHT SOURCE SYSTEM, PROJECTOR HAVING THE SAME, AND ME...

ILLUMINATION LIGHT GENERATION APPARATUS

LIGHT DEFLECTOR, LIGHT SOURCE DEVICE, IMAGE PROJECTING DEVICE, AND...

ILLUMINATION LIGHT BEAM FORMING DEVICE, ILLUMINATION LIGHT SOURCE D...

LIGHT SOURCE APPARATUS AND IMAGE PROJECTION APPARATUS

LIGHT SOURCE APPARATUS AND IMAGE PROJECTION APPARATUS

SCANNING IMAGE DISPLAYER, MOBILE PHONE, MOBILE INFORMATION PROCESSO...

IMAGING DEVICE

IMAGE PROJECTING DEVICE AND PRISM

Polarization Conversion Element,Polarization Conversion Optical Sys...

POLARIZATION BEAM SPLITTER AND POLARIZATION CONVERSION ELEMENT