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Yuji IEIRI
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Kanagawa, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Toner amount detector, toner amount detection method, and non-trans...
Patent number
11,126,111
Issue date
Sep 21, 2021
Ricoh Company, Ltd.
Yuusuke Tomura
G01 - MEASURING TESTING
Information
Patent Grant
Remaining toner amount detecting apparatus, image forming apparatus...
Patent number
10,996,606
Issue date
May 4, 2021
Ricoh Company, Ltd.
Yuji Ieiri
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus, image forming method, and recording medium
Patent number
10,859,973
Issue date
Dec 8, 2020
Ricoh Company, Ltd.
Masashi Hommi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Remaining toner amount detecting apparatus, remaining toner amount...
Patent number
10,775,729
Issue date
Sep 15, 2020
Ricoh Company, Ltd.
Tetsuya Hara
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Ink jet recording device and short circuit protection method for in...
Patent number
9,162,443
Issue date
Oct 20, 2015
Ricoh Company, Ltd.
Yuji Ieiri
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Power supply control device and image forming apparatus
Patent number
9,054,545
Issue date
Jun 9, 2015
Ricoh Company, Ltd.
Yuji Ieiri
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Defective nozzle detector and image forming apparatus and system
Patent number
8,814,302
Issue date
Aug 26, 2014
Ricoh Company, Ltd.
Yuji Ieiri
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Image forming apparatus and drive-voltage generating circuit
Patent number
8,764,143
Issue date
Jul 1, 2014
Ricoh Company, Limited
Yuji Ieiri
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Image processing apparatus, image processing method and computer-re...
Patent number
7,819,492
Issue date
Oct 26, 2010
Ricoh Company, Ltd.
Jun Watanabe
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Image forming apparatus
Patent number
7,789,475
Issue date
Sep 7, 2010
Ricoh Company, Limited
Takashi Morishita
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Patents Applications
last 30 patents
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
TONER AMOUNT DETECTOR, TONER AMOUNT DETECTION METHOD, AND NON-TRANS...
Publication number
20200333725
Publication date
Oct 22, 2020
Yuusuke TOMURA
G01 - MEASURING TESTING
Information
Patent Application
IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, AND RECORDING MEDIUM
Publication number
20200301357
Publication date
Sep 24, 2020
RICOH COMPANY, LTD.
Masashi HOMMI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
REMAINING TONER AMOUNT DETECTING APPARATUS, REMAINING TONER AMOUNT...
Publication number
20200233361
Publication date
Jul 23, 2020
RICOH COMPANY, LTD.
Tetsuya HARA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
REMAINING TONER AMOUNT DETECTING APPARATUS, IMAGE FORMING APPARATUS...
Publication number
20200201229
Publication date
Jun 25, 2020
RICOH COMPANY, LTD.
Yuji IEIRI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
INK JET RECORDING DEVICE AND SHORT CIRCUIT PROTECTION METHOD FOR IN...
Publication number
20150174896
Publication date
Jun 25, 2015
RICOH COMPANY, LTD.
Yuji Ieiri
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Application
POWER SUPPLY CONTROL DEVICE AND IMAGE FORMING APPARATUS
Publication number
20130033719
Publication date
Feb 7, 2013
Yuji IEIRI
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
IMAGE FORMING APPARATUS AND DRIVE-VOLTAGE GENERATING CIRCUIT
Publication number
20120306952
Publication date
Dec 6, 2012
Yuji IEIRI
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Application
Defective nozzle detector and image forming apparatus and system
Publication number
20110298855
Publication date
Dec 8, 2011
RICOH COMPANY, LTD.
Yuji Ieiri
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Application
Image Processing Apparatus, Image Processing Method and Computer-Re...
Publication number
20090027432
Publication date
Jan 29, 2009
Ricoh Company, Ltd.
Jun Watanabe
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Application
Image forming apparatus
Publication number
20080225070
Publication date
Sep 18, 2008
Ricoh Company, Limited
Takashi Morishita
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS