Yoshitaka Sekiguchi

Person

Hyogo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Toner for electrophotography, image forming method, and process car...
- Patent number 10,274,856
- Issue date Apr 30, 2019
- Ricoh Company, Ltd.
- Hisashi Nakajima
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner, toner stored unit, and image forming apparatus
- Patent number 10,025,213
- Issue date Jul 17, 2018
- Ricoh Company, Ltd.
- Masahiro Seki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner for developing electrostatic image, image forming apparatus,...
- Patent number 9,448,501
- Issue date Sep 20, 2016
- Ricoh Company, Ltd.
- Ryota Inoue
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner housing container and image forming apparatus
- Patent number 9,348,259
- Issue date May 24, 2016
- Ricoh Company, Ltd.
- Masashi Nagayama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner, image forming apparatus, image forming method, and process c...
- Patent number 9,182,694
- Issue date Nov 10, 2015
- Ricoh Company, Ltd.
- Saori Yamada
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner, developer, process cartridge, and image forming apparatus
- Patent number 9,152,066
- Issue date Oct 6, 2015
- Ricoh Company, Ltd.
- Ryota Inoue
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner, image forming method, and process cartridge
- Patent number 9,005,862
- Issue date Apr 14, 2015
- Ricoh Company, Ltd.
- Masashi Nagayama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner, method for producing the same, and image forming apparatus
- Patent number 8,852,836
- Issue date Oct 7, 2014
- Ricoh Company, Ltd.
- Masahiro Seki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Double-sided one pass image forming apparatus
- Patent number 8,200,134
- Issue date Jun 12, 2012
- Ricoh Company, Ltd.
- Shunsuke Hamahashi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming method, image forming apparatus and process cartridge
- Patent number 8,192,910
- Issue date Jun 5, 2012
- Ricoh Company, Limited
- Hiroaki Katoh
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device, and image forming method and process cartridge u...
- Patent number 8,103,199
- Issue date Jan 24, 2012
- Ricoh Company Limited
- Hideaki Yasunaga
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus
- Patent number 8,090,303
- Issue date Jan 3, 2012
- Ricoh Company, Ltd.
- Masayuki Hayashi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image developer using one-component developer
- Patent number 8,041,270
- Issue date Oct 18, 2011
- Ricoh Company, Limited
- Hideaki Yasunaga
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner, and oilless fixing method and process cartridge using the toner
- Patent number 8,021,814
- Issue date Sep 20, 2011
- Ricoh Company Limited
- Masayuki Hagi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Full-color toner kit, process cartridge, and image forming method
- Patent number 8,007,973
- Issue date Aug 30, 2011
- Ricoh Company, Limited
- Kazuoki Fuwa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus and image forming method
- Patent number 7,979,010
- Issue date Jul 12, 2011
- Ricoh Company, Ltd.
- Kazuoki Fuwa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device, developer therefor, and image forming method and...
- Patent number 7,970,323
- Issue date Jun 28, 2011
- Ricoh Company, Ltd.
- Hiroaki Katoh
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Single component development device, process cartridge and toner
- Patent number 7,873,300
- Issue date Jan 18, 2011
- Ricoh Company Limited
- Kazuoki Fuwa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Non-magnetic toner for one-component development and method of prep...
- Patent number 7,867,680
- Issue date Jan 11, 2011
- Ricoh Company Limited
- Yoshihiro Mikuriya
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner recovery apparatus, process cartridge, and image forming appa...
- Patent number 7,820,348
- Issue date Oct 26, 2010
- Ricoh Company, Ltd.
- Masayuki Hagi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner recovery apparatus, process cartridge, and image forming appa...
- Patent number 7,720,428
- Issue date May 18, 2010
- Ricoh Company, Ltd.
- Masayuki Hagi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming method and apparatus including a relationship between...
- Patent number 7,587,159
- Issue date Sep 8, 2009
- Ricoh Company, Ltd.
- Kazuoki Fuwa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner comprising core layer and shell layer
- Patent number 7,217,488
- Issue date May 15, 2007
- Konica Minolta Business Technologies, Inc.
- Yoshihiro Mikuriya
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Resin particles for toner and toner prepared therewith
- Patent number 7,141,345
- Issue date Nov 28, 2006
- Konica Minolta Business Technologies, Inc.
- Hiroyuki Yamasaki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner for developing electrostatic latent image
- Patent number 6,899,985
- Issue date May 31, 2005
- Minolta Co., Ltd.
- Masahide Inoue
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner containing specific external additive for full color-copying...
- Patent number 6,841,326
- Issue date Jan 11, 2005
- Minolta Co., Ltd.
- Takeshi Arai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Color toner for developing electrostatic image comprising two kinds...
- Patent number 6,541,173
- Issue date Apr 1, 2003
- Minolta Co., Ltd.
- Kenichi Kido
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Color toner for developing electrostatic image, comprising first li...
- Patent number 6,506,530
- Issue date Jan 14, 2003
- Minolta Co., Ltd.
- Kenichi Kido
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner used for developing electrostatic latent image
- Patent number 6,482,561
- Issue date Nov 19, 2002
- Minolta Co., Ltd.
- Takeshi Arai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrostatic-latent-image developing toner and inorganic particles...
- Patent number 6,352,808
- Issue date Mar 5, 2002
- Minolta Co., Ltd.
- Masayuki Hagi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
TONER, PRODUCTION METHOD OF TONER, IMAGE FORMING METHOD, IMAGE FORM...
- Publication number 20200174390
- Publication date Jun 4, 2020
- Naoko KITADA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER, TONER STORAGE UNIT, AND IMAGE FORMING APPARATUS
- Publication number 20200026210
- Publication date Jan 23, 2020
- Yu HIRAI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER, IMAGE FORMING METHOD, IMAGE FORMING APPARATUS, AND PROCESS C...
- Publication number 20200019076
- Publication date Jan 16, 2020
- Shohta KOBAYASHI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER, TONER STORED UNIT, AND IMAGE FORMING APPARATUS
- Publication number 20190011847
- Publication date Jan 10, 2019
- Satoshi OGAWA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER, TONER STORED UNIT, AND IMAGE FORMING APPARATUS
- Publication number 20180031992
- Publication date Feb 1, 2018
- Masahiro SEKI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER FOR ELECTROPHOTOGRAPHY, IMAGE FORMING METHOD, AND PROCESS CAR...
- Publication number 20160327884
- Publication date Nov 10, 2016
- Hisashi NAKAJIMA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER FOR DEVELOPING ELECTROSTATIC IMAGE, IMAGE FORMING APPARATUS,...
- Publication number 20140363209
- Publication date Dec 11, 2014
- Ryota Inoue
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER HOUSING CONTAINER AND IMAGE FORMING APPARATUS
- Publication number 20140348550
- Publication date Nov 27, 2014
- RICOH COMPANY, LTD.
- Masashi NAGAYAMA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER FOR ELECTROPHOTOGRAPHY, AND IMAGE FORMING METHOD, IMAGE FORMI...
- Publication number 20140255840
- Publication date Sep 11, 2014
- Yoshitaka Sekiguchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER, IMAGE FORMING METHOD, AND PROCESS CARTRIDGE
- Publication number 20130260307
- Publication date Oct 3, 2013
- Masashi Nagayama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER, IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, AND PROCESS C...
- Publication number 20130244162
- Publication date Sep 19, 2013
- Saori Yamada
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER, DEVELOPER, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS
- Publication number 20130244157
- Publication date Sep 19, 2013
- Ryota INOUE
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER, METHOD FOR PRODUCING THE SAME, AND IMAGE FORMING APPARATUS
- Publication number 20120328976
- Publication date Dec 27, 2012
- Masahiro Seki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER RECOVERY APPARATUS, PROCESS CARTRIDGE, AND IMAGE FORMING APPA...
- Publication number 20100167196
- Publication date Jul 1, 2010
- Masayuki Hagi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING METHOD, IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE
- Publication number 20100009282
- Publication date Jan 14, 2010
- Hiroaki KATOH
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20090238585
- Publication date Sep 24, 2009
- Masayuki Hayashi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20090190949
- Publication date Jul 30, 2009
- Shunsuke Hamahashi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
NON-MAGNETIC TONER FOR ONE-COMPONENT DEVELOPMENT AND METHOD OF PREP...
- Publication number 20090186291
- Publication date Jul 23, 2009
- Yoshihiro Mikuriya
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD
- Publication number 20090169270
- Publication date Jul 2, 2009
- Kazuoki FUWA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER FOR ONE-COMPONENT DEVELOPER
- Publication number 20090117481
- Publication date May 7, 2009
- Hideaki Yasunaga
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
SINGLE COMPONENT DEVELOPMENT DEVICE, PROCESS CARTRIDGE AND TONER
- Publication number 20090041511
- Publication date Feb 12, 2009
- KAZUOKI FUWA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING DEVICE, DEVELOPER THEREFOR, AND IMAGE FORMING METHOD AND...
- Publication number 20080304875
- Publication date Dec 11, 2008
- RICOH COMPANY, LTD.
- Hiroaki Katoh
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER, AND OILLESS FIXING METHOD AND PROCESS CARTRIDGE USING THE TONER
- Publication number 20080233506
- Publication date Sep 25, 2008
- Masayuki Hagi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING DEVICE AND IMAGE FORMING METHOD USING ONE COMPONENT DEVE...
- Publication number 20080227009
- Publication date Sep 18, 2008
- Kazuoki FUWA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE DEVELOPER USING ONE-COMPONENT DEVELOPER
- Publication number 20080226356
- Publication date Sep 18, 2008
- Hideaki YASUNAGA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER RECOVERY APPARATUS, PROCESS CARTRIDGE, AND IMAGE FORMING APPA...
- Publication number 20080199234
- Publication date Aug 21, 2008
- Masayuki HAGI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Developing device, and image forming method and process cartridge u...
- Publication number 20080175630
- Publication date Jul 24, 2008
- Hideaki Yasunaga
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
FULL-COLOR TONER KIT, PROCESS CARTRIDGE, AND IMAGE FORMING METHOD
- Publication number 20080159777
- Publication date Jul 3, 2008
- Kazuoki Fuwa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING METHOD AND IMAGE FORMING APPARATUS
- Publication number 20080069605
- Publication date Mar 20, 2008
- Kazuoki FUWA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Resin particles for toner and toner prepared therewith
- Publication number 20050069801
- Publication date Mar 31, 2005
- Konica Minolta Business Technologies, Inc.
- Hiroyuki Yamasaki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Yoshitaka Sekiguchi

Person

Patents Grantslast 30 patents

Toner for electrophotography, image forming method, and process car...

Toner, toner stored unit, and image forming apparatus

Toner for developing electrostatic image, image forming apparatus,...

Toner housing container and image forming apparatus

Toner, image forming apparatus, image forming method, and process c...

Toner, developer, process cartridge, and image forming apparatus

Toner, image forming method, and process cartridge

Toner, method for producing the same, and image forming apparatus

Double-sided one pass image forming apparatus

Image forming method, image forming apparatus and process cartridge

Developing device, and image forming method and process cartridge u...

Image forming apparatus

Image developer using one-component developer

Toner, and oilless fixing method and process cartridge using the toner

Full-color toner kit, process cartridge, and image forming method

Image forming apparatus and image forming method

Developing device, developer therefor, and image forming method and...

Single component development device, process cartridge and toner

Non-magnetic toner for one-component development and method of prep...

Toner recovery apparatus, process cartridge, and image forming appa...

Toner recovery apparatus, process cartridge, and image forming appa...

Image forming method and apparatus including a relationship between...

Toner comprising core layer and shell layer

Resin particles for toner and toner prepared therewith

Toner for developing electrostatic latent image

Toner containing specific external additive for full color-copying...

Color toner for developing electrostatic image comprising two kinds...

Color toner for developing electrostatic image, comprising first li...

Toner used for developing electrostatic latent image

Electrostatic-latent-image developing toner and inorganic particles...

Patents Applicationslast 30 patents

TONER, PRODUCTION METHOD OF TONER, IMAGE FORMING METHOD, IMAGE FORM...

TONER, TONER STORAGE UNIT, AND IMAGE FORMING APPARATUS

TONER, IMAGE FORMING METHOD, IMAGE FORMING APPARATUS, AND PROCESS C...

TONER, TONER STORED UNIT, AND IMAGE FORMING APPARATUS

TONER, TONER STORED UNIT, AND IMAGE FORMING APPARATUS

TONER FOR ELECTROPHOTOGRAPHY, IMAGE FORMING METHOD, AND PROCESS CAR...

TONER FOR DEVELOPING ELECTROSTATIC IMAGE, IMAGE FORMING APPARATUS,...

TONER HOUSING CONTAINER AND IMAGE FORMING APPARATUS

TONER FOR ELECTROPHOTOGRAPHY, AND IMAGE FORMING METHOD, IMAGE FORMI...

TONER, IMAGE FORMING METHOD, AND PROCESS CARTRIDGE

TONER, IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, AND PROCESS C...

TONER, DEVELOPER, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

TONER, METHOD FOR PRODUCING THE SAME, AND IMAGE FORMING APPARATUS

TONER RECOVERY APPARATUS, PROCESS CARTRIDGE, AND IMAGE FORMING APPA...

IMAGE FORMING METHOD, IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE

IMAGE FORMING APPARATUS

IMAGE FORMING APPARATUS

NON-MAGNETIC TONER FOR ONE-COMPONENT DEVELOPMENT AND METHOD OF PREP...

IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD

TONER FOR ONE-COMPONENT DEVELOPER

SINGLE COMPONENT DEVELOPMENT DEVICE, PROCESS CARTRIDGE AND TONER

DEVELOPING DEVICE, DEVELOPER THEREFOR, AND IMAGE FORMING METHOD AND...

TONER, AND OILLESS FIXING METHOD AND PROCESS CARTRIDGE USING THE TONER

DEVELOPING DEVICE AND IMAGE FORMING METHOD USING ONE COMPONENT DEVE...

IMAGE DEVELOPER USING ONE-COMPONENT DEVELOPER

TONER RECOVERY APPARATUS, PROCESS CARTRIDGE, AND IMAGE FORMING APPA...

Developing device, and image forming method and process cartridge u...

FULL-COLOR TONER KIT, PROCESS CARTRIDGE, AND IMAGE FORMING METHOD

IMAGE FORMING METHOD AND IMAGE FORMING APPARATUS

Resin particles for toner and toner prepared therewith