Kenji Koyama

Person

Midori-ku, Yokohama-shi, Kanagawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Semiconductor optical integrated device
- Patent number 8,964,809
- Issue date Feb 24, 2015
- Sumitomo Electric Industies, Ltd.
- Yoshihiro Yoneda
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method for producing semiconductor optical integrated device
- Patent number 8,637,329
- Issue date Jan 28, 2014
- Sumitomo Electric Industries Ltd.
- Yoshihiro Yoneda
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Semiconductor optical modulator and method for manufacturing the same
- Patent number 8,618,638
- Issue date Dec 31, 2013
- Sumitomo Electric Industries Ltd.
- Yoshihiro Yoneda
- G02 - OPTICS
Information Patent Grant
Method of making semiconductor optical integrated device by alterna...
- Patent number 8,563,342
- Issue date Oct 22, 2013
- Sumitomo Electric Industries Ltd.
- Yoshihiro Yoneda
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Method for manufacturing semiconductor laser diode
- Patent number 8,124,543
- Issue date Feb 28, 2012
- Sumitomo Electric Industries, Ltd.
- Hideki Yagi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Image recording apparatus, image recording method, and computer-rea...
- Patent number 7,835,638
- Issue date Nov 16, 2010
- Ricoh Company, Ltd.
- Kenji Koyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Image-recording apparatus
- Patent number 7,499,640
- Issue date Mar 3, 2009
- Ricoh Company, Ltd.
- Kenji Koyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical integrated device
- Patent number 7,405,421
- Issue date Jul 29, 2008
- Sumitomo Electric Industries, Ltd.
- Jun-ichi Hashimoto
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
DC motor
- Patent number 7,307,368
- Issue date Dec 11, 2007
- Ricoh Company, Ltd.
- Ikuya Tsurukawa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
DC motor rotation control apparatus
- Patent number 6,628,893
- Issue date Sep 30, 2003
- Ricoh Company, Ltd.
- Yoshimi Ohno
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
DC motor rotation detecting apparatus and DC motor rotation control...
- Patent number 6,617,816
- Issue date Sep 9, 2003
- Ricoh Company, Ltd.
- Yoshimi Ohno
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
DC motor rotation detecting apparatus and DC motor rotation control...
- Patent number 6,570,350
- Issue date May 27, 2003
- Ricoh Company, Ltd.
- Yoshimi Ohno
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Pulse-controlled camera, method for setting control reference posit...
- Patent number 5,307,110
- Issue date Apr 26, 1994
- Ricoh Company, Ltd.
- Kousaku Sawabe
- G02 - OPTICS
Information Patent Grant
Flash control based on calculated required flash energy
- Patent number 5,148,212
- Issue date Sep 15, 1992
- Ricoh Company, Ltd.
- Yoshio Serikawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Chemical vapor deposition method using a plasma self-cleaning
- Patent number 5,041,311
- Issue date Aug 20, 1991
- Fujitsu Limited
- Atsuhiro Tsukune
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Control device for driving zoom lens of a camera
- Patent number 4,866,468
- Issue date Sep 12, 1989
- Ricoh Company, Ltd.
- Keiji Himuro
- G02 - OPTICS
Information Patent Grant
Process for the formation of phosphosilicate glass coating
- Patent number 4,781,945
- Issue date Nov 1, 1988
- Fujitsu Limited
- Masahide Nishimura
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Motor-driven film winder for cameras
- Patent number 4,720,720
- Issue date Jan 19, 1988
- Ricoh Company, Ltd.
- Kunihiko Araki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Motor-driven film winder for cameras
- Patent number 4,653,885
- Issue date Mar 31, 1987
- Kunihiko Araki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
UV erasable EPROM with UV transparent silicon oxynitride coating
- Patent number 4,581,622
- Issue date Apr 8, 1986
- Fujitsu Limited
- Kanetake Takasaki
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Vapor phase growth method
- Patent number 4,539,068
- Issue date Sep 3, 1985
- Fujitsu Limited
- Mikio Takagi
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Process of producing a semiconductor device
- Patent number 4,532,022
- Issue date Jul 30, 1985
- Fujitsu Limited
- Kanetake Takasaki
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...

Patents Applicationslast 30 patents

Information Patent Application
STORAGE MEDIUM, SCREEN GENERATION ASSISTING APPARATUS, AND GENERATI...
- Publication number 20220317869
- Publication date Oct 6, 2022
- Fujitsu Limited
- Kenji Koyama
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
SEMICONDUCTOR OPTICAL INTEGRATED DEVICE
- Publication number 20130058371
- Publication date Mar 7, 2013
- Sumitomo Electric Industries, Ltd.
- Yoshihiro YONEDA
- B82 - NANO-TECHNOLOGY
Information Patent Application
METHOD FOR PRODUCING SEMICONDUCTOR OPTICAL INTEGRATED DEVICE
- Publication number 20130012002
- Publication date Jan 10, 2013
- Sumitomo Electric Industries, Ltd.
- Yoshihiro YONEDA
- B82 - NANO-TECHNOLOGY
Information Patent Application
METHOD OF MAKING SEMICONDUCTOR OPTICAL INTEGRATED DEVICE
- Publication number 20120309121
- Publication date Dec 6, 2012
- Sumitomo Electric Industries, Ltd.
- Yoshihiro YONEDA
- B82 - NANO-TECHNOLOGY
Information Patent Application
SEMICONDUCTOR OPTICAL MODULATOR AND METHOD FOR MANUFACTURING THE SAME
- Publication number 20120148184
- Publication date Jun 14, 2012
- Sumitomo Electric Industries, Ltd.
- Yoshihiro Yoneda
- G02 - OPTICS
Information Patent Application
METHOD FOR MANUFACTURING SEMICONDUCTOR LASER DIODE
- Publication number 20100303115
- Publication date Dec 2, 2010
- Sumitomo Electric Industries, Ltd.
- Hideki Yagi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
IMAGE RECORDING APPARATUS, IMAGE RECORDING METHOD, AND COMPUTER-REA...
- Publication number 20070212053
- Publication date Sep 13, 2007
- Kenji KOYAMA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Image-recording apparatus
- Publication number 20060006844
- Publication date Jan 12, 2006
- Kenji Koyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical integrated device
- Publication number 20050220158
- Publication date Oct 6, 2005
- Kenji Koyama
- G02 - OPTICS
Information Patent Application
Optical integrated device
- Publication number 20050220391
- Publication date Oct 6, 2005
- Jun-ichi Hashimoto
- G02 - OPTICS
Information Patent Application
Optical integrated device
- Publication number 20050220392
- Publication date Oct 6, 2005
- Jun-ichi Hashimoto
- G02 - OPTICS
Information Patent Application
Disk control unit, disk drive, disk control method, and disk contro...
- Publication number 20050120144
- Publication date Jun 2, 2005
- FUJITSU LIMITED
- Kenji Koyama
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
DC motor
- Publication number 20020163259
- Publication date Nov 7, 2002
- RICOH COMPANY, LTD.
- Yoshimi Ohno
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
DC motor rotation detecting apparatus and DC motor rotation control...
- Publication number 20020044769
- Publication date Apr 18, 2002
- RICOH COMPANY, LTD.
- Yoshimi Ohno
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
DC motor
- Publication number 20020027395
- Publication date Mar 7, 2002
- RICOH COMPANY, LTD.
- Ikuya Tsurukawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
DC motor rotation detecting apparatus and DC motor rotation control...
- Publication number 20010022505
- Publication date Sep 20, 2001
- Ricoh Company, Ltd.
- Yoshimi Ohno
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
DC motor rotation control apparatus
- Publication number 20010019660
- Publication date Sep 6, 2001
- RICOH COMPANY, LTD.
- Yoshimi Ohno
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Kenji Koyama

Person

Patents Grantslast 30 patents

Semiconductor optical integrated device

Method for producing semiconductor optical integrated device

Semiconductor optical modulator and method for manufacturing the same

Method of making semiconductor optical integrated device by alterna...

Method for manufacturing semiconductor laser diode

Image recording apparatus, image recording method, and computer-rea...

Image-recording apparatus

Optical integrated device

DC motor

DC motor rotation control apparatus

DC motor rotation detecting apparatus and DC motor rotation control...

DC motor rotation detecting apparatus and DC motor rotation control...

Pulse-controlled camera, method for setting control reference posit...

Flash control based on calculated required flash energy

Chemical vapor deposition method using a plasma self-cleaning

Control device for driving zoom lens of a camera

Process for the formation of phosphosilicate glass coating

Motor-driven film winder for cameras

Motor-driven film winder for cameras

UV erasable EPROM with UV transparent silicon oxynitride coating

Vapor phase growth method

Process of producing a semiconductor device

Patents Applicationslast 30 patents

STORAGE MEDIUM, SCREEN GENERATION ASSISTING APPARATUS, AND GENERATI...

SEMICONDUCTOR OPTICAL INTEGRATED DEVICE

METHOD FOR PRODUCING SEMICONDUCTOR OPTICAL INTEGRATED DEVICE

METHOD OF MAKING SEMICONDUCTOR OPTICAL INTEGRATED DEVICE

SEMICONDUCTOR OPTICAL MODULATOR AND METHOD FOR MANUFACTURING THE SAME

METHOD FOR MANUFACTURING SEMICONDUCTOR LASER DIODE

IMAGE RECORDING APPARATUS, IMAGE RECORDING METHOD, AND COMPUTER-REA...

Image-recording apparatus

Optical integrated device

Optical integrated device

Optical integrated device

Disk control unit, disk drive, disk control method, and disk contro...

DC motor

DC motor rotation detecting apparatus and DC motor rotation control...

DC motor

DC motor rotation detecting apparatus and DC motor rotation control...

DC motor rotation control apparatus