Yusuke ISHIZUKA

Person

Kanagawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Powder conveying device and image forming apparatus incorporating same
- Patent number 12,111,600
- Issue date Oct 8, 2024
- Ricoh Company, Ltd.
- Kazuhiro Shimada
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Transfer bias and pressure in an image forming apparatus
- Patent number 11,789,385
- Issue date Oct 17, 2023
- Ricoh Company, Ltd.
- Yuuki Aoki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Cleaning device for cleaning a discharge wire, charger, and image f...
- Patent number 11,474,445
- Issue date Oct 18, 2022
- Ricoh Company, Ltd.
- Yusuke Ishizuka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device with a developer regulator and a stopper
- Patent number 11,307,515
- Issue date Apr 19, 2022
- Ricoh Company, Ltd.
- Hiroshi Kikuchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developer conveyance device and image forming apparatus incorporati...
- Patent number 10,935,907
- Issue date Mar 2, 2021
- Ricoh Company, Ltd.
- Yusuke Ishizuka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner conveyance device and image forming apparatus
- Patent number 9,983,512
- Issue date May 29, 2018
- Ricoh Company, Ltd.
- Yusuke Ishizuka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Device including roller, and image forming apparatus and process ca...
- Patent number 9,958,823
- Issue date May 1, 2018
- Ricoh Company, Ltd.
- Daisuke Tomita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus which controls the rotation speed of a lubr...
- Patent number 9,798,288
- Issue date Oct 24, 2017
- Ricoh Company, Ltd.
- Yasuhiro Maehata
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus
- Patent number 9,696,648
- Issue date Jul 4, 2017
- Ricoh Company, Ltd.
- Yasuhiro Maehata
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Process cartridge and image forming apparatus
- Patent number 9,395,686
- Issue date Jul 19, 2016
- Ricoh Company, Ltd.
- Takeshi Shintani
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Lubricant supplying device, process cartridge and image forming app...
- Patent number 9,383,715
- Issue date Jul 5, 2016
- Ricoh Company, Ltd.
- Kenji Honjoh
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus
- Patent number 9,367,021
- Issue date Jun 14, 2016
- Ricoh Company, Ltd.
- Yusuke Ishizuka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus including first and second bias voltage sup...
- Patent number 9,268,292
- Issue date Feb 23, 2016
- Ricoh Company, Ltd.
- Takeshi Kojima
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Cleaning unit, process cartridge incorporating same, and image form...
- Patent number 9,201,378
- Issue date Dec 1, 2015
- Ricoh Company, Ltd.
- Akira Asaoka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus
- Patent number 9,195,204
- Issue date Nov 24, 2015
- Ricoh Company, Ltd.
- Yusuke Ishizuka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Waste-toner conveyance device and image forming apparatus
- Patent number 9,158,267
- Issue date Oct 13, 2015
- Ricoh Company, Ltd.
- Nobuo Kuwabara
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Charger positioning adjuster and image forming apparatus incorporat...
- Patent number 9,141,020
- Issue date Sep 22, 2015
- Ricoh Company, Ltd.
- Hiroyuki Uenishi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20240255890
- Publication date Aug 1, 2024
- RICOH COMPANY, LTD.
- Yutaka GOTO
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
POWDER CONVEYING DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME
- Publication number 20230384730
- Publication date Nov 30, 2023
- Kazuhiro SHIMADA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TRANSFER DEVICE AND IMAGE FORMING APPARATUS
- Publication number 20230103454
- Publication date Apr 6, 2023
- RICOH COMPANY, LTD.
- Hiroshi Kikuchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
BIASING FORCE ADJUSTING DEVICE, TRANSFER DEVICE, AND IMAGE FORMING...
- Publication number 20230061068
- Publication date Mar 2, 2023
- Yutaka GOTO
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20220317601
- Publication date Oct 6, 2022
- RICOH COMPANY, LTD.
- Yuuki Aoki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CLEANING DEVICE, CHARGER, AND IMAGE FORMING APPARATUS
- Publication number 20220107579
- Publication date Apr 7, 2022
- Ricoh Company, Ltd.
- Yusuke ISHIZUKA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING DEVICE AND IMAGE FORMING APPARATUS INCLUDING SAME
- Publication number 20210033998
- Publication date Feb 4, 2021
- Hiroshi KIKUCHI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPER CONVEYANCE DEVICE AND IMAGE FORMING APPARATUS INCORPORATI...
- Publication number 20200387085
- Publication date Dec 10, 2020
- Ricoh Company, Ltd.
- Yusuke Ishizuka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CLEANING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS
- Publication number 20200233365
- Publication date Jul 23, 2020
- RICOH COMPANY, LTD.
- Hideki Kimura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER CONVEYANCE DEVICE AND IMAGE FORMING APPARATUS
- Publication number 20170261887
- Publication date Sep 14, 2017
- RICOH COMPANY, LTD.
- Yusuke ISHIZUKA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVICE INCLUDING ROLLER, AND IMAGE FORMING APPARATUS AND PROCESS CA...
- Publication number 20170102663
- Publication date Apr 13, 2017
- Daisuke TOMITA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20160334757
- Publication date Nov 17, 2016
- Yasuhiro MAEHATA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20160209771
- Publication date Jul 21, 2016
- RICOH COMPANY, LTD.
- Yasuhiro Maehata
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
LUBRICANT SUPPLYING DEVICE, PROCESS CARTRIDGE AND IMAGE FORMING APP...
- Publication number 20160139555
- Publication date May 19, 2016
- Kenji Honjoh
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS
- Publication number 20160011562
- Publication date Jan 14, 2016
- RICOH COMPANY, LTD.
- Takeshi SHINTANI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20150227107
- Publication date Aug 13, 2015
- RICOH COMPANY, LTD.
- Yusuke ISHIZUKA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
WASTE-TONER CONVEYANCE DEVICE AND IMAGE FORMING APPARATUS
- Publication number 20150078795
- Publication date Mar 19, 2015
- RICOH COMPANY, LTD.
- Nobuo KUWABARA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20140314461
- Publication date Oct 23, 2014
- Yusuke ISHIZUKA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CHARGER POSITIONING ADJUSTER AND IMAGE FORMING APPARATUS INCORPORAT...
- Publication number 20140270847
- Publication date Sep 18, 2014
- RICOH COMPANY, LTD.
- Hiroyuki UENISHI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CLEANING UNIT, PROCESS CARTRIDGE INCORPORATING SAME, AND IMAGE FORM...
- Publication number 20140233997
- Publication date Aug 21, 2014
- Akira ASAOKA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20140126942
- Publication date May 8, 2014
- Takeshi KOJIMA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Yusuke ISHIZUKA

Person

Patents Grantslast 30 patents

Powder conveying device and image forming apparatus incorporating same

Transfer bias and pressure in an image forming apparatus

Cleaning device for cleaning a discharge wire, charger, and image f...

Developing device with a developer regulator and a stopper

Developer conveyance device and image forming apparatus incorporati...

Toner conveyance device and image forming apparatus

Device including roller, and image forming apparatus and process ca...

Image forming apparatus which controls the rotation speed of a lubr...

Image forming apparatus

Process cartridge and image forming apparatus

Lubricant supplying device, process cartridge and image forming app...

Image forming apparatus

Image forming apparatus including first and second bias voltage sup...

Cleaning unit, process cartridge incorporating same, and image form...

Image forming apparatus

Waste-toner conveyance device and image forming apparatus

Charger positioning adjuster and image forming apparatus incorporat...

Patents Applicationslast 30 patents

IMAGE FORMING APPARATUS

POWDER CONVEYING DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME

TRANSFER DEVICE AND IMAGE FORMING APPARATUS

BIASING FORCE ADJUSTING DEVICE, TRANSFER DEVICE, AND IMAGE FORMING...

IMAGE FORMING APPARATUS

CLEANING DEVICE, CHARGER, AND IMAGE FORMING APPARATUS

DEVELOPING DEVICE AND IMAGE FORMING APPARATUS INCLUDING SAME

DEVELOPER CONVEYANCE DEVICE AND IMAGE FORMING APPARATUS INCORPORATI...

CLEANING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

TONER CONVEYANCE DEVICE AND IMAGE FORMING APPARATUS

DEVICE INCLUDING ROLLER, AND IMAGE FORMING APPARATUS AND PROCESS CA...

IMAGE FORMING APPARATUS

IMAGE FORMING APPARATUS

LUBRICANT SUPPLYING DEVICE, PROCESS CARTRIDGE AND IMAGE FORMING APP...

PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS

IMAGE FORMING APPARATUS

WASTE-TONER CONVEYANCE DEVICE AND IMAGE FORMING APPARATUS

IMAGE FORMING APPARATUS

CHARGER POSITIONING ADJUSTER AND IMAGE FORMING APPARATUS INCORPORAT...

CLEANING UNIT, PROCESS CARTRIDGE INCORPORATING SAME, AND IMAGE FORM...

IMAGE FORMING APPARATUS