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Masahiko Ishikawa
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Shizuoka, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Ink, ink set, ink container, image forming method, and image formin...
Patent number
11,499,062
Issue date
Nov 15, 2022
Ricoh Company, Ltd.
Hiroshi Gotou
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Ink discharge device and ink discharge method
Patent number
10,286,666
Issue date
May 14, 2019
Ricoh Company, Ltd.
Masahiko Ishikawa
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Ink, image forming method, and liquid discharging device
Patent number
10,266,710
Issue date
Apr 23, 2019
Ricoh Company, Ltd.
Hiroshi Gotou
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Ink, ink container, image forming method, image forming apparatus,...
Patent number
10,190,007
Issue date
Jan 29, 2019
Ricoh Company, Ltd.
Hiroshi Gotou
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Toner, toner stored unit, and image forming apparatus
Patent number
10,151,991
Issue date
Dec 11, 2018
Ricoh Company, Ltd.
Satoshi Kojima
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Ink discharge device and ink discharge method
Patent number
10,113,078
Issue date
Oct 30, 2018
Ricoh Company, Ltd.
Keita Katoh
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Toner
Patent number
9,971,261
Issue date
May 15, 2018
Ricoh Company, Ltd.
Satoshi Takahashi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner, and method for manufacturing toner
Patent number
9,785,065
Issue date
Oct 10, 2017
Ricoh Company, Ltd.
Ryota Inoue
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner and developer
Patent number
9,618,862
Issue date
Apr 11, 2017
Ricoh Company, Ltd.
Yoshihiro Moriya
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner, developer and method of manufacturing toner
Patent number
9,618,863
Issue date
Apr 11, 2017
Ricoh Company, Ltd.
Satoshi Takahashi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner, method of manufacturing the toner, developer, and process ca...
Patent number
9,482,973
Issue date
Nov 1, 2016
Ricoh Company, Ltd.
Ryota Inoue
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus, image forming method and process cartridge
Patent number
7,865,114
Issue date
Jan 4, 2011
Ricoh Company Limited
Masahiko Ishikawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Patents Applications
last 30 patents
Information
Patent Application
IMAGE FORMING APPARATUS
Publication number
20240012353
Publication date
Jan 11, 2024
Ricoh Company, Ltd.
Yuusuke FURUICHI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
IMAGE FORMING APPARATUS, TONER, TWO-COMPONENT DEVELOPING AGENT, AND...
Publication number
20210294229
Publication date
Sep 23, 2021
RICOH COMPANY, LTD.
Hideki SUGIURA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
INK, INK SET, INK CONTAINER, IMAGE FORMING METHOD, AND IMAGE FORMIN...
Publication number
20200157366
Publication date
May 21, 2020
Hiroshi GOTOU
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Application
INK DISCHARGE DEVICE AND INK DISCHARGE METHOD
Publication number
20180126731
Publication date
May 10, 2018
Masahiko ISHIKAWA
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Application
INK DISCHARGE DEVICE AND INK DISCHARGE METHOD
Publication number
20180105711
Publication date
Apr 19, 2018
Keita KATOH
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Application
INK, IMAGE FORMING METHOD, AND LIQUID DISCHARGING DEVICE
Publication number
20180030292
Publication date
Feb 1, 2018
Hiroshi GOTOU
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Application
TONER, TONER STORED UNIT, AND IMAGE FORMING APPARATUS
Publication number
20170343912
Publication date
Nov 30, 2017
Satoshi KOJIMA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
TONER, AND METHOD FOR MANUFACTURING TONER
Publication number
20170212437
Publication date
Jul 27, 2017
Ryota Inoue
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
TONER
Publication number
20170146917
Publication date
May 25, 2017
Satoshi TAKAHASHI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
INK, INK CONTAINER, IMAGE FORMING METHOD, IMAGE FORMING APPARATUS,...
Publication number
20160333208
Publication date
Nov 17, 2016
Hiroshi GOTOU
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Application
TONER, IMAGE FORMATION DEVICE, AND PROCESS CARTRIDGE
Publication number
20160266521
Publication date
Sep 15, 2016
Ryota INOUE
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
TONER, DEVELOPER AND METHOD OF MANUFACTURING TONER
Publication number
20160124332
Publication date
May 5, 2016
Satoshi TAKAHASHI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
TONER, DEVELOPER, AND METHOD OF MANUFACTURING THE TONER
Publication number
20160077455
Publication date
Mar 17, 2016
Yoshihiro MORIYA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
TONER, METHOD OF MANUFACTURING TONER, IMAGE FORMING METHOD, AND IMA...
Publication number
20150362852
Publication date
Dec 17, 2015
Yoshihiro MORIYA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
TONER, METHOD OF MANUFACTURING THE TONER, DEVELOPER, AND PROCESS CA...
Publication number
20150261111
Publication date
Sep 17, 2015
Ryota INOUE
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
TONER AND DEVELOPER
Publication number
20150241804
Publication date
Aug 27, 2015
Satoshi TAKAHASHI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
TONER AND DEVELOPER
Publication number
20150234303
Publication date
Aug 20, 2015
Yoshihiro MORIYA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
IMAGE FORMING APPARATUS, IMAGE FORMING METHOD AND PROCESS CARTRIDGE
Publication number
20080241716
Publication date
Oct 2, 2008
Masahiko Ishikawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Toner composition, two component developer using the toner composit...
Publication number
20040058260
Publication date
Mar 25, 2004
Kohichi Katoh
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY