Masato Yokoyama

Person

Tokyo-to, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Method, apparatus, and program for driving a motor in a feedback co...
- Patent number 7,800,335
- Issue date Sep 21, 2010
- Ricoh Company, Ltd.
- Toshiyuki Andoh
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Ink jet recording apparatus capable of performing a duplex print op...
- Patent number 7,712,989
- Issue date May 11, 2010
- Ricoh Company, Ltd.
- Motokazu Yasui
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Scanning lens for optical scanner, optical scanner, and image formi...
- Patent number 7,535,594
- Issue date May 19, 2009
- Ricoh Company, Limited
- Hiroshi Yoshizawa
- G02 - OPTICS
Information Patent Grant
Method and apparatus for image forming capable of effectively reduc...
- Patent number 7,509,074
- Issue date Mar 24, 2009
- Ricoh Company, Ltd.
- Masato Yokoyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus having a resist rotary member
- Patent number 7,454,150
- Issue date Nov 18, 2008
- Ricoh Company, Ltd.
- Hiromichi Matsuda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Belt driving control apparatus and image forming apparatus which us...
- Patent number 7,386,262
- Issue date Jun 10, 2008
- Ricoh Company, Ltd.
- Hiroshi Okamura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Belt-drive control device, color-shift detecting method, color-shif...
- Patent number 7,376,375
- Issue date May 20, 2008
- Ricoh Company, Limited
- Kazuhiko Kobayashi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Ink jet recording apparatus capable of performing a duplex print op...
- Patent number 7,344,326
- Issue date Mar 18, 2008
- Ricoh Company, Ltd.
- Motokazu Yasui
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Method, apparatus, and program for driving a motor in a feedback co...
- Patent number 7,330,009
- Issue date Feb 12, 2008
- Ricoh Co., Ltd.
- Toshiyuki Andoh
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method and apparatus for image forming capable of preventing image...
- Patent number 7,319,475
- Issue date Jan 15, 2008
- Ricoh Company, Ltd.
- Yasumasa Tomita
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for image forming capable of effectively reduc...
- Patent number 7,257,339
- Issue date Aug 14, 2007
- Ricoh Company, Ltd.
- Masato Yokoyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Apparatus for controlling driving of endless belt, and image formin...
- Patent number 7,251,444
- Issue date Jul 31, 2007
- Ricoh Company, Ltd.
- Yuji Matsuda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Optical scanner, optical-path adjustment method, and image forming...
- Patent number 7,218,337
- Issue date May 15, 2007
- Ricoh Company, Ltd.
- Masato Yokoyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Belt driving controller, process cartridge, and image forming appar...
- Patent number 7,110,700
- Issue date Sep 19, 2006
- Ricoh Company, Limited
- Toshiyuki Andoh
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Apparatus for and method of driving motor to move object at a const...
- Patent number 6,949,896
- Issue date Sep 27, 2005
- Ricoh Company, Limited
- Toshiyuki Andoh
- G05 - CONTROLLING REGULATING
Information Patent Grant
Light scanning device and image forming apparatus
- Patent number 6,864,906
- Issue date Mar 8, 2005
- Ricoh Company, Ltd.
- Masato Yokoyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Ink jet recording apparatus capable of performing a duplex print op...
- Patent number 6,719,469
- Issue date Apr 13, 2004
- Ricoh Company, Ltd.
- Motokazu Yasui
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Optical writing system directed to miniaturization thereof, and ima...
- Patent number 6,593,951
- Issue date Jul 15, 2003
- Ricoh Company, Ltd.
- Masato Yokoyama
- G02 - OPTICS
Information Patent Grant
Ink-jet printing system having an improved sheet transport mechanism
- Patent number 6,416,176
- Issue date Jul 9, 2002
- Ricoh Company, Ltd.
- Motokazu Yasui
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Image forming apparatus using a roller type charging system
- Patent number 5,946,529
- Issue date Aug 31, 1999
- Ricoh Company, Ltd.
- Masumi Sato
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic method and apparatus including a toner recycle...
- Patent number 5,878,317
- Issue date Mar 2, 1999
- Ricoh Company, Ltd.
- Katsumi Masuda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner spreading device for a charging roller of an image forming ap...
- Patent number 5,799,229
- Issue date Aug 25, 1998
- Ricoh Company, Ltd.
- Masato Yokoyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus having an endless conveying and transferrin...
- Patent number 5,719,684
- Issue date Feb 17, 1998
- Ricoh Company, Ltd.
- Hiroyuki Ohkaji
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Cleaning device for image forming equipment
- Patent number 5,321,483
- Issue date Jun 14, 1994
- Ricoh Company, Ltd.
- Masato Yokoyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
METHOD AND APPARATUS FOR IMAGE FORMING CAPABLE OF EFFECTIVELY REDUC...
- Publication number 20070231022
- Publication date Oct 4, 2007
- Masato Yokoyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
METHOD,APPARATUS, AND PROGRAM FOR DRIVING A MOTOR IN A FEEDBACK CON...
- Publication number 20070189815
- Publication date Aug 16, 2007
- Toshiyuki Andoh
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Belt driving control apparatus and image forming apparatus
- Publication number 20060182471
- Publication date Aug 17, 2006
- Hiroshi Okamura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Belt-drive control device, color-shift detecting method, color-shif...
- Publication number 20060165442
- Publication date Jul 27, 2006
- Kazuhiko Kobayashi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming apparatus
- Publication number 20060153604
- Publication date Jul 13, 2006
- Hiromichi Matsuda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Belt drive controlling method, belt drive controlling apparatus, be...
- Publication number 20060133873
- Publication date Jun 22, 2006
- Toshiyuki Andoh
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Apparatus for controlling driving of endless belt, and image formin...
- Publication number 20060110189
- Publication date May 25, 2006
- Yuji Matsuda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Ink jet recording apparatus capable of performing a duplex print op...
- Publication number 20060087547
- Publication date Apr 27, 2006
- Motokazu Yasui
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
Belt driving controller, process cartridge, and image forming appar...
- Publication number 20050085945
- Publication date Apr 21, 2005
- Toshiyuki Andoh
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Method, apparatus, and program for driving a motor in a feedback co...
- Publication number 20050057209
- Publication date Mar 17, 2005
- Toshiyuki Andoh
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Method and apparatus for image forming capable of preventing image...
- Publication number 20050052719
- Publication date Mar 10, 2005
- Yasumasa Tomita
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and apparatus for image forming capable of effectively reduc...
- Publication number 20050053388
- Publication date Mar 10, 2005
- Masato Yokoyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Scanning lens for optical scanner, optical scanner, and image formi...
- Publication number 20040179087
- Publication date Sep 16, 2004
- Hiroshi Yoshizawa
- G02 - OPTICS
Information Patent Application
Apparatus for and method of driving motor to move object at a const...
- Publication number 20040164691
- Publication date Aug 26, 2004
- Toshiyuki Andoh
- G05 - CONTROLLING REGULATING
Information Patent Application
Ink jet recording apparatus capable of performing a duplex print op...
- Publication number 20040165926
- Publication date Aug 26, 2004
- Motokazu Yasui
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
Optical scanner, optical-path adjustment method, and image forming...
- Publication number 20040104993
- Publication date Jun 3, 2004
- Masato Yokoyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Light scanning device and image forming apparatus
- Publication number 20040041992
- Publication date Mar 4, 2004
- Masato Yokoyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Ink jet recording apparatus capable of performing a duplex print op...
- Publication number 20020192000
- Publication date Dec 19, 2002
- Motokazu Yasui
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
Optical writing system directed to miniaturization thereof, and ima...
- Publication number 20020036683
- Publication date Mar 28, 2002
- Masato Yokoyama
- G02 - OPTICS

Masato Yokoyama

Person

Patents Grantslast 30 patents

Method, apparatus, and program for driving a motor in a feedback co...

Ink jet recording apparatus capable of performing a duplex print op...

Scanning lens for optical scanner, optical scanner, and image formi...

Method and apparatus for image forming capable of effectively reduc...

Image forming apparatus having a resist rotary member

Belt driving control apparatus and image forming apparatus which us...

Belt-drive control device, color-shift detecting method, color-shif...

Ink jet recording apparatus capable of performing a duplex print op...

Method, apparatus, and program for driving a motor in a feedback co...

Method and apparatus for image forming capable of preventing image...

Method and apparatus for image forming capable of effectively reduc...

Apparatus for controlling driving of endless belt, and image formin...

Optical scanner, optical-path adjustment method, and image forming...

Belt driving controller, process cartridge, and image forming appar...

Apparatus for and method of driving motor to move object at a const...

Light scanning device and image forming apparatus

Ink jet recording apparatus capable of performing a duplex print op...

Optical writing system directed to miniaturization thereof, and ima...

Ink-jet printing system having an improved sheet transport mechanism

Image forming apparatus using a roller type charging system

Electrophotographic method and apparatus including a toner recycle...

Toner spreading device for a charging roller of an image forming ap...

Image forming apparatus having an endless conveying and transferrin...

Cleaning device for image forming equipment

Patents Applicationslast 30 patents

METHOD AND APPARATUS FOR IMAGE FORMING CAPABLE OF EFFECTIVELY REDUC...

METHOD,APPARATUS, AND PROGRAM FOR DRIVING A MOTOR IN A FEEDBACK CON...

Belt driving control apparatus and image forming apparatus

Belt-drive control device, color-shift detecting method, color-shif...

Image forming apparatus

Belt drive controlling method, belt drive controlling apparatus, be...

Apparatus for controlling driving of endless belt, and image formin...

Ink jet recording apparatus capable of performing a duplex print op...

Belt driving controller, process cartridge, and image forming appar...

Method, apparatus, and program for driving a motor in a feedback co...

Method and apparatus for image forming capable of preventing image...

Method and apparatus for image forming capable of effectively reduc...

Scanning lens for optical scanner, optical scanner, and image formi...

Apparatus for and method of driving motor to move object at a const...

Ink jet recording apparatus capable of performing a duplex print op...

Optical scanner, optical-path adjustment method, and image forming...

Light scanning device and image forming apparatus

Ink jet recording apparatus capable of performing a duplex print op...

Optical writing system directed to miniaturization thereof, and ima...