Hajime Tsukahara

Person

Kanagawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Data processing device, image reading apparatus, image forming appa...
- Patent number 12,066,854
- Issue date Aug 20, 2024
- Ricoh Company, Ltd.
- Hajime Tsukahara
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Data processing device, image reading apparatus, image forming appa...
- Patent number 11,429,141
- Issue date Aug 30, 2022
- Ricoh Company, Ltd.
- Tomohiro Sasa
- G06 - COMPUTING CALCULATING COUNTING
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
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
Image reading apparatus, image forming apparatus, and shading corre...
- Patent number 8,767,268
- Issue date Jul 1, 2014
- Ricoh Company, Limited
- Hajime Tsukahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Image scanning apparatus and image forming apparatus
- Patent number 8,514,452
- Issue date Aug 20, 2013
- Ricoh Company, Ltd.
- Hajime Tsukahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Image reading signal processing IC, image reading apparatus, and im...
- Patent number 8,395,830
- Issue date Mar 12, 2013
- Ricoh Company, Ltd.
- Hajime Tsukahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Image reading apparatus
- Patent number 8,395,821
- Issue date Mar 12, 2013
- Ricoh Company, Limited
- Hajime Tsukahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Image reading apparatus
- Patent number 8,345,319
- Issue date Jan 1, 2013
- Ricoh Company, Limited
- Hajime Tsukahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Image reading apparatus and image forming apparatus
- Patent number 8,335,023
- Issue date Dec 18, 2012
- Ricoh Company, Ltd.
- Hajime Tsukahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Image reading apparatus and image forming apparatus
- Patent number 8,279,502
- Issue date Oct 2, 2012
- Ricoh Company, Ltd.
- Hajime Tsukahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Image reading apparatus and image forming apparatus including the i...
- Patent number 7,948,661
- Issue date May 24, 2011
- Ricoh Company Limited
- Hajime Tsukahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Image reading device, image forming apparatus, and reading-unit ins...
- Patent number 7,889,404
- Issue date Feb 15, 2011
- Ricoh Company, Ltd.
- Hajime Tsukahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Image signal processing circuit, image reading device, and image fo...
- Patent number 7,782,496
- Issue date Aug 24, 2010
- Ricoh Company, Ltd.
- Hajime Tsukahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Black-level feedback device, image reading device, and black-level...
- Patent number 7,719,724
- Issue date May 18, 2010
- Ricoh Company, Ltd.
- Hajime Tsukahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
DATA PROCESSING DEVICE, IMAGE READING APPARATUS, IMAGE FORMING APPA...
- Publication number 20240103560
- Publication date Mar 28, 2024
- Hajime TSUKAHARA
- G06 - COMPUTING CALCULATING COUNTING
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
DATA PROCESSING DEVICE, IMAGE READING APPARATUS, IMAGE FORMING APPA...
- Publication number 20200301468
- Publication date Sep 24, 2020
- Ricoh Company, Ltd.
- Tomohiro SASA
- 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
IMAGE READING APPARATUS, IMAGE FORMING APPARATUS, AND SHADING CORRE...
- Publication number 20120057210
- Publication date Mar 8, 2012
- Hajime TSUKAHARA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
IMAGE READING APPARATUS AND IMAGE FORMING APPARATUS
- Publication number 20120026550
- Publication date Feb 2, 2012
- Hajime Tsukahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Image scanning apparatus and image forming apparatus
- Publication number 20110109945
- Publication date May 12, 2011
- Ricoh Company, Limited
- Hajime Tsukahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
IMAGE READING APPARATUS
- Publication number 20110026085
- Publication date Feb 3, 2011
- Hajime TSUKAHARA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
IMAGE READING APPARATUS
- Publication number 20100142009
- Publication date Jun 10, 2010
- Hajime Tsukahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
IMAGE READING DEVICE, IMAGE FORMING APPARATUS, AND READING-UNIT INS...
- Publication number 20080297862
- Publication date Dec 4, 2008
- Hajime TSUKAHARA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
IMAGE READING APPARATUS AND IMAGE FORMING APPARATUS
- Publication number 20080231917
- Publication date Sep 25, 2008
- Hajime Tsukahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Image signal processing circuit, image reading device, and image fo...
- Publication number 20080212146
- Publication date Sep 4, 2008
- Hajime Tsukahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
IMAGE READING APPARATUS AND IMAGE FORMING APPARATUS INCLUDING THE I...
- Publication number 20080106748
- Publication date May 8, 2008
- Hajime TSUKAHARA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SIGNAL PROCESSING INTEGRATED CIRCUIT, IMAGE READING DEVICE, AND IMA...
- Publication number 20080068467
- Publication date Mar 20, 2008
- Tohru Kanno
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
IMAGE READING SIGNAL PROCESSING IC, IMAGE READING APPARATUS, AND IM...
- Publication number 20080024842
- Publication date Jan 31, 2008
- Hajime Tsukahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
BLACK-LEVEL FEEDBACK DEVICE, IMAGE READING DEVICE, AND BLACK-LEVEL...
- Publication number 20070216915
- Publication date Sep 20, 2007
- Hajime Tsukahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Hajime Tsukahara

Person

Patents Grantslast 30 patents

Data processing device, image reading apparatus, image forming appa...

Data processing device, image reading apparatus, image forming appa...

Inclination detecting device, reading device, image processing appa...

Inclination detecting device, reading device, image processing appa...

Sheet reading apparatus for detecting the shadow of a conveyed shee...

Edge detecting device, tilt correction device, reading device, imag...

Image processing apparatus, method for processing image, and record...

Image reading apparatus, image forming apparatus, and shading corre...

Image scanning apparatus and image forming apparatus

Image reading signal processing IC, image reading apparatus, and im...

Image reading apparatus

Image reading apparatus

Image reading apparatus and image forming apparatus

Image reading apparatus and image forming apparatus

Image reading apparatus and image forming apparatus including the i...

Image reading device, image forming apparatus, and reading-unit ins...

Image signal processing circuit, image reading device, and image fo...

Black-level feedback device, image reading device, and black-level...

Patents Applicationslast 30 patents

DATA PROCESSING DEVICE, IMAGE READING APPARATUS, IMAGE FORMING APPA...

EDGE DETECTING DEVICE, TILT CORRECTION DEVICE, READING DEVICE, IMAG...

DATA PROCESSING DEVICE, IMAGE READING APPARATUS, IMAGE FORMING APPA...

IMAGE PROCESSING APPARATUS, METHOD FOR PROCESSING IMAGE, AND RECORD...

INCLINATION DETECTING DEVICE, READING DEVICE, IMAGE PROCESSING APPA...

INCLINATION DETECTING DEVICE, READING DEVICE, IMAGE PROCESSING APPA...

SHEET READING APPARATUS, DOCUMENT READING APPARATUS, AND IMAGE FORM...

IMAGE READING APPARATUS, IMAGE FORMING APPARATUS, AND SHADING CORRE...

IMAGE READING APPARATUS AND IMAGE FORMING APPARATUS

Image scanning apparatus and image forming apparatus

IMAGE READING APPARATUS

IMAGE READING APPARATUS

IMAGE READING DEVICE, IMAGE FORMING APPARATUS, AND READING-UNIT INS...

IMAGE READING APPARATUS AND IMAGE FORMING APPARATUS

Image signal processing circuit, image reading device, and image fo...

IMAGE READING APPARATUS AND IMAGE FORMING APPARATUS INCLUDING THE I...

SIGNAL PROCESSING INTEGRATED CIRCUIT, IMAGE READING DEVICE, AND IMA...

IMAGE READING SIGNAL PROCESSING IC, IMAGE READING APPARATUS, AND IM...

BLACK-LEVEL FEEDBACK DEVICE, IMAGE READING DEVICE, AND BLACK-LEVEL...