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Hiroshi Okamura
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Kanagawa, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Image forming apparatus, image forming method, and non-transitory r...
Patent number
12,105,440
Issue date
Oct 1, 2024
Ricoh Company, Ltd.
Yuji Ieiri
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Bias circuit, image formation device and image forming apparatus
Patent number
10,948,854
Issue date
Mar 16, 2021
Ricoh Company, Ltd.
Hiroshi Okamura
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Water content measuring device, measuring method, and image forming...
Patent number
10,746,583
Issue date
Aug 18, 2020
Ricoh Company, Ltd.
Yohei Kushida
G01 - MEASURING TESTING
Information
Patent Grant
Thickness detector and image forming apparatus
Patent number
10,571,841
Issue date
Feb 25, 2020
Ricoh Company, Ltd.
Hayato Fujita
B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information
Patent Grant
Remaining powder amount detection device, image forming device, and...
Patent number
10,488,787
Issue date
Nov 26, 2019
Ricoh Company, Ltd.
Hiroshi Okamura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Motor connection detecting device, motor connection detecting metho...
Patent number
10,185,274
Issue date
Jan 22, 2019
Ricoh Company Ltd.
Hiroshi Okamura
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Sheet thickness detector and image forming apparatus including same
Patent number
9,499,363
Issue date
Nov 22, 2016
Ricoh Company, Ltd.
Yuu Wakabayashi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Sheet thickness detector and image forming apparatus including same
Patent number
8,950,750
Issue date
Feb 10, 2015
Ricoh Company, Ltd.
Yuu Wakabayashi
B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information
Patent Grant
Sheet thickness detecting device, feeding device, and image forming...
Patent number
8,794,626
Issue date
Aug 5, 2014
Ricoh Company, Ltd.
Ryo Takenaka
B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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
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
Apparatus and method for controlling write current supplied to head
Patent number
6,914,738
Issue date
Jul 5, 2005
Kabushiki Kaisha Toshiba
Seishiro Fujiwara
G11 - INFORMATION STORAGE
Information
Patent Grant
Method and apparatus for recovering read errors due to thermal aspe...
Patent number
6,018,428
Issue date
Jan 25, 2000
Kabushiki Kaisha Toshiba
Hiroshi Okamura
G11 - INFORMATION STORAGE
Information
Patent Grant
Method and apparatus for detecting flying height variation of head...
Patent number
5,831,781
Issue date
Nov 3, 1998
Kabushiki Kaisha Toshiba
Hiroshi Okamura
G11 - INFORMATION STORAGE
Information
Patent Grant
Read error recovery method and apparatus for use in disk storage sy...
Patent number
5,808,825
Issue date
Sep 15, 1998
Kabushiki Kaisha Toshiba
Hiroshi Okamura
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic disk system having servo signal detecting function dependi...
Patent number
5,684,651
Issue date
Nov 4, 1997
Kabushiki Kaisha Toshiba
Koji Yaegashi
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic recording/reproducing apparatus having integrated circuit...
Patent number
5,532,885
Issue date
Jul 2, 1996
Kabushiki Kaisha Toshiba
Hiroshi Okamura
G11 - INFORMATION STORAGE
Information
Patent Grant
Method and apparatus for automatic gain control amplifier adjustmen...
Patent number
5,373,403
Issue date
Dec 13, 1994
Kabushiki Kaisha Toshiba
Hiroshi Okamura
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic recording and reproducing apparatus
Patent number
5,233,481
Issue date
Aug 3, 1993
Kabushiki Kaisha Toshiba
Hiroshi Okamura
G11 - INFORMATION STORAGE
Information
Patent Grant
Method of accessing a medium with low power consumption and a recor...
Patent number
5,099,368
Issue date
Mar 24, 1992
Kabushiki Kaisha Toshiba
Hiroshi Okamura
G11 - INFORMATION STORAGE
Information
Patent Grant
Alignment disk for magnetic head azimuth correction
Patent number
5,043,837
Issue date
Aug 27, 1991
Kabushiki Kaisha Toshiba
Hiroshi Okamura
G11 - INFORMATION STORAGE
Information
Patent Grant
Method of accurately executing read access and magnetic recording/r...
Patent number
5,038,230
Issue date
Aug 6, 1991
Kabushiki Kaisha Toshiba
Masahiro Kusunoki
G11 - INFORMATION STORAGE
Information
Patent Grant
Low-noise magnetic read/write head
Patent number
4,939,608
Issue date
Jul 3, 1990
Kabushiki Kaisha Toshiba
Hiroshi Okamura
G11 - INFORMATION STORAGE
Information
Patent Grant
Method of sharing various types of medium drives and recording/repr...
Patent number
4,916,557
Issue date
Apr 10, 1990
Kabushiki Kaisha Toshiba
Hiroshi Okamura
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Power semiconductor device
Patent number
4,882,612
Issue date
Nov 21, 1989
Kabushiki Kaisha Toshiba
Yasunori Usui
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Magnetic recording/reproduction apparatus
Patent number
4,845,576
Issue date
Jul 4, 1989
Kabushiki Kaisha Toshiba
Masahiro Kusunoki
G11 - INFORMATION STORAGE
Information
Patent Grant
Apparatus for reproducing data from magnetic recording medium
Patent number
4,819,103
Issue date
Apr 4, 1989
Kabushiki Kaisha Toshiba
Hiroshi Okamura
G11 - INFORMATION STORAGE
Information
Patent Grant
Waveform equalizer for signal reproduced from a magnetic recording...
Patent number
4,786,989
Issue date
Nov 22, 1988
Kabushiki Kaisha Toshiba
Hiroshi Okamura
G11 - INFORMATION STORAGE
Patents Applications
last 30 patents
Information
Patent Application
IMAGE FORMING APPARATUS, FAULT SENSING METHOD, AND NON-TRANSITORY C...
Publication number
20240377784
Publication date
Nov 14, 2024
RICOH COMPANY, LTD.
Shunta YAMAHORI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, AND NON-TRANSITORY R...
Publication number
20240004327
Publication date
Jan 4, 2024
RICOH COMPANY, LTD.
Yuji Ieiri
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
BIAS CIRCUIT, IMAGE FORMATION DEVICE AND IMAGE FORMING APPARATUS
Publication number
20200103792
Publication date
Apr 2, 2020
RICOH COMPANY, LTD.
Hiroshi OKAMURA
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
REMAINING POWDER AMOUNT DETECTION DEVICE, IMAGE FORMING DEVICE, AND...
Publication number
20180348664
Publication date
Dec 6, 2018
Hiroshi Okamura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
WATER CONTENT MEASURING DEVICE, MEASURING METHOD, AND IMAGE FORMING...
Publication number
20180321074
Publication date
Nov 8, 2018
Yohei KUSHIDA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
THICKNESS DETECTOR AND IMAGE FORMING APPARATUS
Publication number
20180239285
Publication date
Aug 23, 2018
RICOH COMPANY, LTD.
Hayato Fujita
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
MOTOR CONNECTION DETECTING DEVICE, MOTOR CONNECTION DETECTING METHO...
Publication number
20170255152
Publication date
Sep 7, 2017
RICOH COMPANY, LTD.
Hiroshi OKAMURA
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
SHEET THICKNESS DETECTOR AND IMAGE FORMING APPARATUS INCLUDING SAME
Publication number
20150108714
Publication date
Apr 23, 2015
RICOH COMPANY, LTD.
Yuu WAKABAYASHI
B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information
Patent Application
SHEET THICKNESS DETECTOR AND IMAGE FORMING APPARATUS INCLUDING SAME
Publication number
20140015192
Publication date
Jan 16, 2014
RICOH COMPANY, LTD.
Yuu WAKABAYASHI
B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information
Patent Application
SHEET THICKNESS DETECTING DEVICE, FEEDING DEVICE, AND IMAGE FORMING...
Publication number
20130200565
Publication date
Aug 8, 2013
Ryo TAKENAKA
B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information
Patent Application
ELECTROMAGNETIC ACTUATOR INSPECTION DEVICE AND IMAGE FORMING APPARATUS
Publication number
20120001652
Publication date
Jan 5, 2012
Hiroshi OKAMURA
G01 - MEASURING TESTING
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
Insulation sheet and disk device provided with the same
Publication number
20050219738
Publication date
Oct 6, 2005
Kabushiki Kaisha Toshiba
Yukio Iida
G11 - INFORMATION STORAGE
Information
Patent Application
Apparatus and method for controlling write current supplied to head
Publication number
20030223143
Publication date
Dec 4, 2003
Kabushiki Kaisha Toshiba
Seishiro Fujiwara
G11 - INFORMATION STORAGE