Kazuhiro Wakamatsu

Person

Hitachi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Drying device and recording medium drying system
- Patent number 10,801,776
- Issue date Oct 13, 2020
- Ricoh Company, Ltd.
- Kohki Asada
- F26 - DRYING
Information Patent Grant
Sheet cutting device and image forming apparatus including the shee...
- Patent number 9,238,566
- Issue date Jan 19, 2016
- Ricoh Company, Ltd.
- Masato Ogawa
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Roll medium holding unit, roll sheet feeder, and image forming appa...
- Patent number 9,004,390
- Issue date Apr 14, 2015
- Ricoh Company, Ltd.
- Shigeru Morinaga
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Sheet cutting device and image forming apparatus including the shee...
- Patent number 8,967,028
- Issue date Mar 3, 2015
- Ricoh Company, Ltd.
- Masahiko Yamada
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Sheet cutting device and image forming apparatus including the shee...
- Patent number 8,967,790
- Issue date Mar 3, 2015
- Ricoh Company, Ltd.
- Masahiko Yamada
- B26 - HAND CUTTING TOOLS CUTTING SEVERING
Information Patent Grant
Image forming apparatus including sheet cutting device
- Patent number 8,955,962
- Issue date Feb 17, 2015
- Ricoh Company, Ltd.
- Yuichiro Maeyama
- B26 - HAND CUTTING TOOLS CUTTING SEVERING
Information Patent Grant
Sheet cutting device and image forming apparatus including the shee...
- Patent number 8,925,436
- Issue date Jan 6, 2015
- Ricoh Company, Ltd.
- Toshihiro Yoshinuma
- B26 - HAND CUTTING TOOLS CUTTING SEVERING
Information Patent Grant
Image forming apparatus including sheet cutting device
- Patent number 8,764,182
- Issue date Jul 1, 2014
- Ricoh Company, Ltd.
- Masato Ogawa
- B26 - HAND CUTTING TOOLS CUTTING SEVERING
Information Patent Grant
Image forming apparatus including sheet cutting device
- Patent number 8,657,402
- Issue date Feb 25, 2014
- Ricoh Company, Ltd.
- Yuichiro Maeyama
- B26 - HAND CUTTING TOOLS CUTTING SEVERING
Information Patent Grant
Image forming apparatus with shortened conveyance path of sheet roll
- Patent number 8,593,651
- Issue date Nov 26, 2013
- Ricoh Company, Ltd.
- Takayuki Niihara
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Open/close mechanism for paper tray for use in image forming apparatus
- Patent number 8,561,979
- Issue date Oct 22, 2013
- Ricoh Company, Ltd.
- Toshikane Nishii
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Fixing device and electro photographic apparatus using the same
- Patent number 8,131,197
- Issue date Mar 6, 2012
- Ricoh Company, Ltd.
- Chikara Hiraoka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Open/close mechanism for paper tray for use in image forming apparatus
- Patent number 8,118,296
- Issue date Feb 21, 2012
- Ricoh Company, Ltd.
- Toshikane Nishii
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Fixing unit and image forming apparatus having the same
- Patent number 8,073,375
- Issue date Dec 6, 2011
- Ricoh Company, Ltd.
- Chikara Hiraoka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Sheet feed cassette and image forming apparatus using the same
- Patent number 7,758,040
- Issue date Jul 20, 2010
- Ricoh Company, Ltd.
- Haruo Hashimoto
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Open/close mechanism for paper tray for use in image forming apparatus
- Patent number 7,731,170
- Issue date Jun 8, 2010
- Ricoh Company, Ltd.
- Toshikane Nishii
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electronic color photography apparatus
- Patent number 7,428,394
- Issue date Sep 23, 2008
- Ricoh Printing Systems, Ltd.
- Tomofumi Yoshida
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Fixing device and image forming apparatus with guide having adjusta...
- Patent number 7,298,981
- Issue date Nov 20, 2007
- Ricoh Printing Systems, Ltd.
- Shunichi Oohara
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus having a sheet removal portion
- Patent number 7,292,805
- Issue date Nov 6, 2007
- Ricoh Printing Systems, Ltd.
- Haruo Hashimoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus
- Patent number 7,142,794
- Issue date Nov 28, 2006
- Ricoh Printing Systems, Ltd.
- Masanari Fujita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus for conducting speed compensation by intern...
- Patent number 6,876,831
- Issue date Apr 5, 2005
- Hitachi Prinitng Solutions, Inc.
- Shunichi Oohara
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Picture image forming apparatus with intermediate transfer belt tra...
- Patent number 6,760,564
- Issue date Jul 6, 2004
- Hitachi, Ltd.
- Shunichi Oohara
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Photoconductor unit and image forming system
- Patent number 6,697,586
- Issue date Feb 24, 2004
- Hitachi, Ltd.
- Masashi Yamamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Color photographic apparatus
- Patent number 6,694,117
- Issue date Feb 17, 2004
- Hitachi, Ltd.
- Kazuhiro Wakamatsu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic image forming system
- Patent number 6,661,994
- Issue date Dec 9, 2003
- Hitachi, Ltd.
- Yoshio Ohuchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Photoconductor unit and image forming system
- Patent number 6,501,925
- Issue date Dec 31, 2002
- Hitachi, Ltd.
- Masashi Yamamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Photoconductor unit and image forming system
- Patent number 6,381,428
- Issue date Apr 30, 2002
- Hitachi, Ltd.
- Masashi Yamamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Printer
- Patent number D452703
- Issue date Jan 1, 2002
- Hitachi, Ltd.
- Shingo Hirose
- D18 - Printing and office machinery
Information Patent Grant
Electrophotographic apparatus having heat exhaustion device
- Patent number 6,327,447
- Issue date Dec 4, 2001
- Hitachi, Ltd.
- Masaru Nakano
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotography apparatus
- Patent number 6,308,025
- Issue date Oct 23, 2001
- Hitachi, Ltd.
- Tadashi Okano
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
DRYING DEVICE AND RECORDING MEDIUM DRYING SYSTEM
- Publication number 20160273832
- Publication date Sep 22, 2016
- RICOH COMPANY, LTD.
- Kohki Asada
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
SHEET CUTTING DEVICE AND IMAGE FORMING APPARATUS INCLUDING THE SHEE...
- Publication number 20120222530
- Publication date Sep 6, 2012
- RICOH COMPANY, LTD.
- Toshihiro Yoshinuma
- B26 - HAND CUTTING TOOLS CUTTING SEVERING
Information Patent Application
SHEET CUTTING DEVICE AND IMAGE FORMING APPARATUS INCLUDING THE SHEE...
- Publication number 20120222531
- Publication date Sep 6, 2012
- RICOH COMPANY, LTD.
- Masato Ogawa
- B26 - HAND CUTTING TOOLS CUTTING SEVERING
Information Patent Application
SHEET CUTTING DEVICE AND IMAGE FORMING APPARATUS INCLUDING THE SHEE...
- Publication number 20120222532
- Publication date Sep 6, 2012
- RICOH COMPANY, LTD.
- Masahiko Yamada
- B26 - HAND CUTTING TOOLS CUTTING SEVERING
Information Patent Application
IMAGE FORMING APPARATUS INCLUDING SHEET CUTTING DEVICE
- Publication number 20120210838
- Publication date Aug 23, 2012
- RICOH COMPANY, LTD.
- Yuichiro Maeyama
- B26 - HAND CUTTING TOOLS CUTTING SEVERING
Information Patent Application
IMAGE FORMING APPARATUS INCLUDING SHEET CUTTING DEVICE
- Publication number 20120140010
- Publication date Jun 7, 2012
- RICOH COMPANY, LTD.
- Masato Ogawa
- B26 - HAND CUTTING TOOLS CUTTING SEVERING
Information Patent Application
SHEET CUTTING DEVICE AND IMAGE FORMING APPARATUS INCLUDING THE SHEE...
- Publication number 20120140011
- Publication date Jun 7, 2012
- RICOH COMPANY, LTD.
- Masahiko Yamada
- B26 - HAND CUTTING TOOLS CUTTING SEVERING
Information Patent Application
IMAGE FORMING APPARATUS INCLUDING SHEET CUTTING DEVICE
- Publication number 20120139987
- Publication date Jun 7, 2012
- RICOH COMPANY, LTD.
- Yuichiro MAEYAMA
- B26 - HAND CUTTING TOOLS CUTTING SEVERING
Information Patent Application
OPEN/CLOSE MECHANISM FOR PAPER TRAY FOR USE IN IMAGE FORMING APPARATUS
- Publication number 20120104685
- Publication date May 3, 2012
- RICOH COMPANY, LTD.
- Toshikane NISHII
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
ROLL MEDIUM HOLDING UNIT, ROLL SHEET FEEDER, AND IMAGE FORMING APPA...
- Publication number 20120032021
- Publication date Feb 9, 2012
- RICOH COMPANY, LTD.
- SHIGERU MORINAGA
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Application
ROLLED PAPER DRIVING APPARATUS AND IMAGE FORMING APPARATUS
- Publication number 20110229242
- Publication date Sep 22, 2011
- RICOH COMPANY, LTD.
- Shigeru MORINAGA
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Application
Image forming apparatus
- Publication number 20110211210
- Publication date Sep 1, 2011
- RICOH COMPANY, LTD.
- Takayuki Niihara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Open/close mechanism for paper tray for use in image forming apparatus
- Publication number 20100201059
- Publication date Aug 12, 2010
- Toshikane Nishii
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Fixing Unit and Image Forming Apparatus Having the Same
- Publication number 20090110448
- Publication date Apr 30, 2009
- Ricoh Printing Systems, Ltd.
- Chikara HIRAOKA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Fixing device and electro photographic apparatus using the same
- Publication number 20080292374
- Publication date Nov 27, 2008
- Ricoh Printing Systems, Ltd.
- Chikara Hiraoka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Sheet feed cassette and image forming apparatus using the same
- Publication number 20080179818
- Publication date Jul 31, 2008
- Haruo Hashimoto
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Application
Open/close mechanism for paper tray for use in image forming apparatus
- Publication number 20080054554
- Publication date Mar 6, 2008
- Toshikane Nishii
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Fixing device and image forming apparatus
- Publication number 20060008283
- Publication date Jan 12, 2006
- Shunichi Oohara
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Electronic color photography apparatus
- Publication number 20050265703
- Publication date Dec 1, 2005
- Ricoh Printing Systems, Ltd.
- Tomofumi Yoshida
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming apparatus
- Publication number 20050169661
- Publication date Aug 4, 2005
- Masanari Fujita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming apparatus
- Publication number 20050163533
- Publication date Jul 28, 2005
- Ricoh Printing Systems, Ltd.
- Haruo Hashimoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming apparatus
- Publication number 20040218947
- Publication date Nov 4, 2004
- Shunichi Oohara
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Photoconductor unit and image forming system
- Publication number 20030091368
- Publication date May 15, 2003
- Masashi Yamamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Color photographic apparatus
- Publication number 20030081966
- Publication date May 1, 2003
- Kazuhiro Wakamatsu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Picture image forming apparatus
- Publication number 20030063929
- Publication date Apr 3, 2003
- Shunichi Oohara
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Electrophotographic image forming system
- Publication number 20020176726
- Publication date Nov 28, 2002
- Yoshio Ohuchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Photoconductor unit and image forming system
- Publication number 20020094213
- Publication date Jul 18, 2002
- Masashi Yamamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Electrophotographic image forming system
- Publication number 20020025201
- Publication date Feb 28, 2002
- Yoshio Ohuchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Kazuhiro Wakamatsu

Person

Patents Grantslast 30 patents

Drying device and recording medium drying system

Sheet cutting device and image forming apparatus including the shee...

Roll medium holding unit, roll sheet feeder, and image forming appa...

Sheet cutting device and image forming apparatus including the shee...

Sheet cutting device and image forming apparatus including the shee...

Image forming apparatus including sheet cutting device

Sheet cutting device and image forming apparatus including the shee...

Image forming apparatus including sheet cutting device

Image forming apparatus including sheet cutting device

Image forming apparatus with shortened conveyance path of sheet roll

Open/close mechanism for paper tray for use in image forming apparatus

Fixing device and electro photographic apparatus using the same

Open/close mechanism for paper tray for use in image forming apparatus

Fixing unit and image forming apparatus having the same

Sheet feed cassette and image forming apparatus using the same

Open/close mechanism for paper tray for use in image forming apparatus

Electronic color photography apparatus

Fixing device and image forming apparatus with guide having adjusta...

Image forming apparatus having a sheet removal portion

Image forming apparatus

Image forming apparatus for conducting speed compensation by intern...

Picture image forming apparatus with intermediate transfer belt tra...

Photoconductor unit and image forming system

Color photographic apparatus

Electrophotographic image forming system

Photoconductor unit and image forming system

Photoconductor unit and image forming system

Printer

Electrophotographic apparatus having heat exhaustion device

Electrophotography apparatus

Patents Applicationslast 30 patents

DRYING DEVICE AND RECORDING MEDIUM DRYING SYSTEM

SHEET CUTTING DEVICE AND IMAGE FORMING APPARATUS INCLUDING THE SHEE...

SHEET CUTTING DEVICE AND IMAGE FORMING APPARATUS INCLUDING THE SHEE...

SHEET CUTTING DEVICE AND IMAGE FORMING APPARATUS INCLUDING THE SHEE...

IMAGE FORMING APPARATUS INCLUDING SHEET CUTTING DEVICE

IMAGE FORMING APPARATUS INCLUDING SHEET CUTTING DEVICE

SHEET CUTTING DEVICE AND IMAGE FORMING APPARATUS INCLUDING THE SHEE...

IMAGE FORMING APPARATUS INCLUDING SHEET CUTTING DEVICE

OPEN/CLOSE MECHANISM FOR PAPER TRAY FOR USE IN IMAGE FORMING APPARATUS

ROLL MEDIUM HOLDING UNIT, ROLL SHEET FEEDER, AND IMAGE FORMING APPA...

ROLLED PAPER DRIVING APPARATUS AND IMAGE FORMING APPARATUS

Image forming apparatus

Open/close mechanism for paper tray for use in image forming apparatus

Fixing Unit and Image Forming Apparatus Having the Same

Fixing device and electro photographic apparatus using the same

Sheet feed cassette and image forming apparatus using the same

Open/close mechanism for paper tray for use in image forming apparatus

Fixing device and image forming apparatus

Electronic color photography apparatus

Image forming apparatus

Image forming apparatus

Image forming apparatus

Photoconductor unit and image forming system

Color photographic apparatus

Picture image forming apparatus

Electrophotographic image forming system

Photoconductor unit and image forming system

Electrophotographic image forming system