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Hiroki Shirado
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Kanagawa, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Signal correction device, image reading device, image processing ap...
Patent number
11,277,541
Issue date
Mar 15, 2022
Ricoh Company, Ltd.
Tatsuya Ozaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Inclination detecting device, reading device, image processing appa...
Patent number
11,115,561
Issue date
Sep 7, 2021
Ricoh Company, Ltd.
Hajime Tsukahara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Inclination detecting device, reading device, image processing appa...
Patent number
11,102,364
Issue date
Aug 24, 2021
Ricoh Company, Ltd.
Yuuki Nakada
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Sheet reading apparatus for detecting the shadow of a conveyed shee...
Patent number
11,102,375
Issue date
Aug 24, 2021
Ricoh Company, Ltd.
Hiroshi Kubo
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Edge detecting device, tilt correction device, reading device, imag...
Patent number
11,102,365
Issue date
Aug 24, 2021
Ricoh Company, Ltd.
Tomohiko Ono
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Document size detection device, image reading device, image forming...
Patent number
11,095,788
Issue date
Aug 17, 2021
Ricoh Company, Ltd.
Tadaaki Oyama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Reading device, image forming apparatus, and image reading method
Patent number
11,089,177
Issue date
Aug 10, 2021
Ricoh Company, Ltd.
Tatsuya Ozaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Image processing apparatus, method for processing image, and record...
Patent number
10,951,791
Issue date
Mar 16, 2021
Ricoh Company, Ltd.
Ayumu Hashimoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Document size detection device, image reading device, image forming...
Patent number
10,855,866
Issue date
Dec 1, 2020
Ricoh Company, Ltd.
Tomohiro Sasa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Photoelectric conversion device, defective pixel determining method...
Patent number
10,542,184
Issue date
Jan 21, 2020
Ricoh Company, Ltd.
Takuhei Yokoyama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Photoelectric conversion device, image forming apparatus, photoelec...
Patent number
10,536,655
Issue date
Jan 14, 2020
Ricoh Company, Ltd.
Hiroki Shirado
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Photoelectric conversion device, photoelectric conversion method, a...
Patent number
10,475,844
Issue date
Nov 12, 2019
Ricoh Company, Ltd.
Keita Inoue
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Signal processing device, image scanning device, image forming appa...
Patent number
10,182,177
Issue date
Jan 15, 2019
Ricoh Company, Ltd.
Tomohiro Sasa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Image reading apparatus, image forming apparatus, image reading met...
Patent number
10,091,383
Issue date
Oct 2, 2018
Ricoh Company, Ltd.
Naoki Goh
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Imaging element, image reading device, image forming apparatus, and...
Patent number
9,973,659
Issue date
May 15, 2018
Ricoh Company, Ltd.
Yoshio Konno
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Image reading device, image processing apparatus, and image reading...
Patent number
9,930,195
Issue date
Mar 27, 2018
Ricoh Company, Ltd.
Hiroki Shirado
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Processing device, image reading device, image forming apparatus, a...
Patent number
9,628,654
Issue date
Apr 18, 2017
Ricoh Company, Ltd.
Yoshio Konno
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Image processing apparatus
Patent number
9,094,630
Issue date
Jul 28, 2015
Ricoh Company, Limited
Hiroki Shirado
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Image reading device and image forming apparatus, and method of con...
Patent number
8,503,047
Issue date
Aug 6, 2013
Ricoh Company, Ltd.
Hiroki Shirado
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
DOCUMENT PLACEMENT DETECTING DEVICE, IMAGE READING DEVICE, IMAGE FO...
Publication number
20230283726
Publication date
Sep 7, 2023
Kohsuke NAMBARA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
GAIN MODIFICATION DEVICE, SIGNAL PROCESSING UNIT, IMAGING DEVICE, I...
Publication number
20220407983
Publication date
Dec 22, 2022
Hiroki SHIRADO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SIGNAL CORRECTION DEVICE, IMAGE READING DEVICE, IMAGE PROCESSING AP...
Publication number
20210099614
Publication date
Apr 1, 2021
Ricoh Company, Ltd.
Tatsuya OZAKI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
EDGE DETECTING DEVICE, TILT CORRECTION DEVICE, READING DEVICE, IMAG...
Publication number
20200336615
Publication date
Oct 22, 2020
Ricoh Company, Ltd.
Tomohiko ONO
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
IMAGE PROCESSING APPARATUS, METHOD FOR PROCESSING IMAGE, AND RECORD...
Publication number
20200296255
Publication date
Sep 17, 2020
RICOH COMPANY, LTD.
Ayumu HASHIMOTO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
INCLINATION DETECTING DEVICE, READING DEVICE, IMAGE PROCESSING APPA...
Publication number
20200252513
Publication date
Aug 6, 2020
Ricoh Company, Ltd.
Yuuki NAKADA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
INCLINATION DETECTING DEVICE, READING DEVICE, IMAGE PROCESSING APPA...
Publication number
20200244837
Publication date
Jul 30, 2020
Ricoh Company, Ltd.
Hajime TSUKAHARA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SHEET READING APPARATUS, DOCUMENT READING APPARATUS, AND IMAGE FORM...
Publication number
20200137262
Publication date
Apr 30, 2020
Ricoh Company, Ltd.
Hiroshi KUBO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
DOCUMENT SIZE DETECTION DEVICE, IMAGE READING DEVICE, IMAGE FORMING...
Publication number
20200120224
Publication date
Apr 16, 2020
Tomohiro Sasa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
DOCUMENT SIZE DETECTION DEVICE, IMAGE READING DEVICE, IMAGE FORMING...
Publication number
20200120225
Publication date
Apr 16, 2020
Tadaaki OYAMA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
READING DEVICE, IMAGE FORMING APPARATUS, AND IMAGE READING METHOD
Publication number
20200120228
Publication date
Apr 16, 2020
Tatsuya Ozaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
PHOTOELECTRIC CONVERSION DEVICE, DEFECTIVE PIXEL DETERMINING METHOD...
Publication number
20180213124
Publication date
Jul 26, 2018
Takuhei Yokohama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
PHOTOELECTRIC CONVERSION DEVICE, PHOTOELECTRIC CONVERSION METHOD, A...
Publication number
20180175096
Publication date
Jun 21, 2018
Keita Inoue
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
PHOTOELECTRIC CONVERSION DEVICE, IMAGE FORMING APPARATUS, PHOTOELEC...
Publication number
20180146150
Publication date
May 24, 2018
Hiroki SHIRADO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
IMAGE READING APPARATUS, IMAGE FORMING APPARATUS, IMAGE READING MET...
Publication number
20180139345
Publication date
May 17, 2018
Naoki GOH
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SIGNAL PROCESSING DEVICE, IMAGE SCANNING DEVICE, IMAGE FORMING APP...
Publication number
20170302821
Publication date
Oct 19, 2017
RICOH COMPANY, LTD.
Tomohiro SASA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
IMAGING ELEMENT, IMAGE READING DEVICE, IMAGE FORMING APPARATUS, AND...
Publication number
20170019567
Publication date
Jan 19, 2017
Yoshio KONNO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
IMAGE READING DEVICE, IMAGE PROCESSING APPARATUS, AND IMAGE READING...
Publication number
20160219163
Publication date
Jul 28, 2016
Hiroki Shirado
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
PROCESSING DEVICE, IMAGE READING DEVICE, IMAGE FORMING APPARATUS, A...
Publication number
20160119495
Publication date
Apr 28, 2016
Yoshio KONNO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
IMAGE PROCESSING APPARATUS
Publication number
20140043629
Publication date
Feb 13, 2014
Hiroki SHIRADO
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
IMAGE READING DEVICE AND IMAGE FORMING APPARATUS, AND METHOD OF CON...
Publication number
20120057211
Publication date
Mar 8, 2012
Hiroki SHIRADO
H04 - ELECTRIC COMMUNICATION TECHNIQUE