Yoshiki YANAGAWA

Person

Shizuoka, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Ink, method of manufacturing ink, and ink cartridge
- Patent number 10,844,235
- Issue date Nov 24, 2020
- Ricoh Company, Ltd.
- Yuusuke Koizuka
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Drying device and image forming apparatus
- Patent number 10,603,929
- Issue date Mar 31, 2020
- Ricoh Company, Ltd.
- Ryota Iwasaki
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Copolymer, ink including copolymer, and ink-stored container
- Patent number 10,370,548
- Issue date Aug 6, 2019
- Ricoh Company, Ltd.
- Shigeyuki Harada
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Ink, ink container, inkjet recording device, and recorded matter
- Patent number 10,280,321
- Issue date May 7, 2019
- Ricoh Company, Ltd.
- Akihiko Matsuyama
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Ink and method for producing same, and ink stored container, printi...
- Patent number 10,273,373
- Issue date Apr 30, 2019
- Ricoh Company, Ltd.
- Yuusuke Koizuka
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Ink, method of manufacturing ink, and ink cartridge
- Patent number 10,233,341
- Issue date Mar 19, 2019
- Ricoh Company, Ltd.
- Yuusuke Koizuka
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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
Copolymer, aqueous ink, and ink cartridge
- Patent number 10,035,869
- Issue date Jul 31, 2018
- Ricoh Company, Ltd.
- Shigeyuki Harada
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Ink, method for producing ink, ink storage container, recording dev...
- Patent number 10,011,729
- Issue date Jul 3, 2018
- Ricoh Company, Ltd.
- Yoshiki Yanagawa
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Ink, recorded matter, ink container, recording device, and recordin...
- Patent number 10,000,656
- Issue date Jun 19, 2018
- Ricoh Company, Ltd.
- Yoshiki Yanagawa
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Ink, ink stored container, inkjet recording apparatus, and recorded...
- Patent number 9,988,543
- Issue date Jun 5, 2018
- Ricoh Company, Ltd.
- Akihiko Matsuyama
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Copolymer, coloring material dispersion, ink, and ink store container
- Patent number 9,896,530
- Issue date Feb 20, 2018
- Ricoh Company, Ltd.
- Shigeyuki Harada
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Copolymer, aqueous ink, and ink cartridge
- Patent number 9,850,335
- Issue date Dec 26, 2017
- Ricoh Company, Ltd.
- Shigeyuki Harada
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Ink, ink stored container, inkjet printing method, and inkjet print...
- Patent number 9,850,391
- Issue date Dec 26, 2017
- Ricoh Company, Ltd.
- Masayuki Fukuoka
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Copolymer, ink, and ink container
- Patent number 9,777,091
- Issue date Oct 3, 2017
- Ricoh Company, Ltd.
- Masayuki Fukuoka
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Substituent-eliminable diketopyrrolopyrrole derivative, organic sem...
- Patent number 9,590,187
- Issue date Mar 7, 2017
- Ricoh Company, Ltd.
- Ryota Arai
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Solution, organic semiconductor material, organic semiconductor fil...
- Patent number 9,406,887
- Issue date Aug 2, 2016
- Ricoh Company, Ltd.
- Ryota Arai
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Copolymer, aqueous ink, and ink cartridge
- Patent number 9,365,670
- Issue date Jun 14, 2016
- Ricoh Company, Ltd.
- Shigeyuki Harada
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Fullerene derivative, and method of preparing the same
- Patent number 9,365,513
- Issue date Jun 14, 2016
- Ricoh Company, Ltd.
- Yoshiki Yanagawa
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Ink, ink cartridge, inkjet recording device, and copolymer
- Patent number 9,353,274
- Issue date May 31, 2016
- Ricoh Company, Ltd.
- Keita Katoh
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Fullerene derivative, and method of preparing the same
- Patent number 9,196,843
- Issue date Nov 24, 2015
- Ricoh Company, Ltd.
- Yoshiki Yanagawa
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Gallium phthalocyanine compound, gallium phthalocyanine composite p...
- Patent number 8,557,489
- Issue date Oct 15, 2013
- Ricoh Company, Ltd.
- Hiromi Sakaguchi
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Hydroxygallium phthalocyanine composite pigment, electrophotographi...
- Patent number 8,530,124
- Issue date Sep 10, 2013
- Ricoh Company, Ltd.
- Hiromi Sakaguchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Gallium phthalocyanine compound, and image bearing member, image fo...
- Patent number 8,383,304
- Issue date Feb 26, 2013
- Ricoh Company, Ltd.
- Yoshiki Yanagawa
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Image forming apparatus, image forming method, and process cartridge
- Patent number 8,335,456
- Issue date Dec 18, 2012
- Ricoh Company, Ltd.
- Yoshiaki Kawasaki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic photoconductor, image forming apparatus, image...
- Patent number 8,227,156
- Issue date Jul 24, 2012
- Ricoh Company, Ltd.
- Keisuke Shimoyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Method of preparing complex-AZO pigment and complex-AZO pigment the...
- Patent number 8,207,312
- Issue date Jun 26, 2012
- Ricoh Company, Ltd.
- Masafumi Ohta
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Electrophotographic photoreceptor, and image forming apparatus and...
- Patent number 8,206,880
- Issue date Jun 26, 2012
- Ricoh Company, Ltd.
- Hiromi Tada
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic photoconductor, production method thereof, imag...
- Patent number 8,197,997
- Issue date Jun 12, 2012
- Ricoh Company, Ltd.
- Yoshiki Yanagawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic photoreceptor and method of preparing the photo...
- Patent number 8,114,563
- Issue date Feb 14, 2012
- Ricoh Company, Limited
- Mitsuaki Hirose
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
INK, METHOD OF MANUFACTURING INK, AND INK CARTRIDGE
- Publication number 20190136076
- Publication date May 9, 2019
- Yuusuke KOIZUKA
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
DRYING DEVICE AND IMAGE FORMING APPARATUS
- Publication number 20190084320
- Publication date Mar 21, 2019
- Ryota Iwasaki
- 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
COPOLYMER, INK INCLUDING COPOLYMER, AND INK-STORED CONTAINER
- Publication number 20180002553
- Publication date Jan 4, 2018
- Shigeyuki HARADA
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
COPOLYMER, AQUEOUS INK, AND INK CARTRIDGE
- Publication number 20180002469
- Publication date Jan 4, 2018
- Shigeyuki HARADA
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
INK, METHOD FOR PRODUCING INK, INK STORAGE CONTAINER, RECORDING DEV...
- Publication number 20170342286
- Publication date Nov 30, 2017
- Yoshiki YANAGAWA
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
INK AND METHOD FOR PRODUCING SAME, AND INK STORED CONTAINER, PRINTI...
- Publication number 20170267884
- Publication date Sep 21, 2017
- Yuusuke KOIZUKA
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
INK, RECORDED MATTER, INK CONTAINER, RECORDING DEVICE, AND RECORDIN...
- Publication number 20170174918
- Publication date Jun 22, 2017
- Yoshiki YANAGAWA
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
COPOLYMER, COLORING MATERIAL DISPERSION, INK, AND INK STORE CONTAINER
- Publication number 20170158794
- Publication date Jun 8, 2017
- Shigeyuki HARADA
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
INK, METHOD OF MANUFACTURING INK, AND INK CARTRIDGE
- Publication number 20170121544
- Publication date May 4, 2017
- Yuusuke KOIZUKA
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
INK, INK STORED CONTAINER, INKJET PRINTING METHOD, AND INKJET PRINT...
- Publication number 20170073533
- Publication date Mar 16, 2017
- Masayuki FUKUOKA
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
INK, INK STORED CONTAINER, INKJET RECORDING APPARATUS, AND RECORDED...
- Publication number 20160362572
- Publication date Dec 15, 2016
- Akihiko MATSUYAMA
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
INK, INK CONTAINER, INKJET RECORDING DEVICE, AND RECORDED MATTER
- Publication number 20160222234
- Publication date Aug 4, 2016
- Akihiko MATSUYAMA
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
COPOLYMER, INK, AND INK CONTAINER
- Publication number 20160168292
- Publication date Jun 16, 2016
- Masayuki FUKUOKA
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
INK, INK CARTRIDGE, INKJET RECORDING DEVICE, AND COPOLYMER
- Publication number 20160130452
- Publication date May 12, 2016
- Keita KATOH
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
COPOLYMER, AQUEOUS INK, AND INK CARTRIDGE
- Publication number 20160102162
- Publication date Apr 14, 2016
- Shigeyuki HARADA
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
COPOLYMER, AQUEOUS INK, AND INK CARTRIDGE
- Publication number 20160017075
- Publication date Jan 21, 2016
- Shigeyuki HARADA
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
FULLERENE DERIVATIVE, AND METHOD OF PREPARING THE SAME
- Publication number 20150158814
- Publication date Jun 11, 2015
- Yoshiki YANAGAWA
- C07 - ORGANIC CHEMISTRY
Information Patent Application
SUBSTITUENT-ELIMINABLE DIKETOPYRROLOPYRROLE DERIVATIVE, ORGANIC SEM...
- Publication number 20150041724
- Publication date Feb 12, 2015
- RICOH COMPANY, LTD.
- Ryota Arai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SOLUTION, ORGANIC SEMICONDUCTOR MATERIAL, ORGANIC SEMICONDUCTOR FIL...
- Publication number 20140264184
- Publication date Sep 18, 2014
- RICOH COMPANY, LTD.
- Ryota ARAI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
FULLERENE DERIVATIVE, AND METHOD OF PREPARING THE SAME
- Publication number 20140024839
- Publication date Jan 23, 2014
- RICOH COMPANY, LTD.
- Yoshiki Yanagawa
- C07 - ORGANIC CHEMISTRY
Information Patent Application
GALLIUM PHTHALOCYANINE COMPOUND, AND IMAGE BEARING MEMBER, IMAGE FO...
- Publication number 20110207043
- Publication date Aug 25, 2011
- Yoshiki YANAGAWA
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
HYDROXYGALLIUM PHTHALOCYANINE COMPOSITE PIGMENT, ELECTROPHOTOGRAPHI...
- Publication number 20110159418
- Publication date Jun 30, 2011
- Hiromi SAKAGUCHI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
GALLIUM PHTHALOCYANINE COMPOUND, GALLIUM PHTHALOCYANINE COMPOSITE P...
- Publication number 20110159420
- Publication date Jun 30, 2011
- Hiromi Sakaguchi
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, IMAGE FORMING APPARATUS, IMAGE...
- Publication number 20110111335
- Publication date May 12, 2011
- Keisuke Shimoyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Electrophotographic Photoreceptor, And Image Forming Apparatus And...
- Publication number 20100310975
- Publication date Dec 9, 2010
- RICOH COMPANY, LTD.
- Hiromi Tada
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
ELECTROPHOTOGRAPHIC PHOTORECEPTOR AND METHOD OF PREPARING THE PHOTO...
- Publication number 20100209842
- Publication date Aug 19, 2010
- Yoshiki Yanagawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
SCOROTRON CORONA CHARGER, PROCESS CARTRIDGE, AND IMAGE FORMING APPA...
- Publication number 20100067953
- Publication date Mar 18, 2010
- RICOH COMPANY, LTD.
- Shinji NOHSHO
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
METHOD OF PREPARING COMPLEX-AZO PIGMENT AND COMPLEX-AZO PIGMENT THE...
- Publication number 20100010204
- Publication date Jan 14, 2010
- Masafumi OHTA
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
CORONA CHARGER, AND PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS U...
- Publication number 20090148186
- Publication date Jun 11, 2009
- RICOH COMPANY, LTD.
- Makoto Yasuda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Yoshiki YANAGAWA

Person

Patents Grantslast 30 patents

Ink, method of manufacturing ink, and ink cartridge

Drying device and image forming apparatus

Copolymer, ink including copolymer, and ink-stored container

Ink, ink container, inkjet recording device, and recorded matter

Ink and method for producing same, and ink stored container, printi...

Ink, method of manufacturing ink, and ink cartridge

Ink discharge device and ink discharge method

Copolymer, aqueous ink, and ink cartridge

Ink, method for producing ink, ink storage container, recording dev...

Ink, recorded matter, ink container, recording device, and recordin...

Ink, ink stored container, inkjet recording apparatus, and recorded...

Copolymer, coloring material dispersion, ink, and ink store container

Copolymer, aqueous ink, and ink cartridge

Ink, ink stored container, inkjet printing method, and inkjet print...

Copolymer, ink, and ink container

Substituent-eliminable diketopyrrolopyrrole derivative, organic sem...

Solution, organic semiconductor material, organic semiconductor fil...

Copolymer, aqueous ink, and ink cartridge

Fullerene derivative, and method of preparing the same

Ink, ink cartridge, inkjet recording device, and copolymer

Fullerene derivative, and method of preparing the same

Gallium phthalocyanine compound, gallium phthalocyanine composite p...

Hydroxygallium phthalocyanine composite pigment, electrophotographi...

Gallium phthalocyanine compound, and image bearing member, image fo...

Image forming apparatus, image forming method, and process cartridge

Electrophotographic photoconductor, image forming apparatus, image...

Method of preparing complex-AZO pigment and complex-AZO pigment the...

Electrophotographic photoreceptor, and image forming apparatus and...

Electrophotographic photoconductor, production method thereof, imag...

Electrophotographic photoreceptor and method of preparing the photo...

Patents Applicationslast 30 patents

INK, METHOD OF MANUFACTURING INK, AND INK CARTRIDGE

DRYING DEVICE AND IMAGE FORMING APPARATUS

INK DISCHARGE DEVICE AND INK DISCHARGE METHOD

COPOLYMER, INK INCLUDING COPOLYMER, AND INK-STORED CONTAINER

COPOLYMER, AQUEOUS INK, AND INK CARTRIDGE

INK, METHOD FOR PRODUCING INK, INK STORAGE CONTAINER, RECORDING DEV...

INK AND METHOD FOR PRODUCING SAME, AND INK STORED CONTAINER, PRINTI...

INK, RECORDED MATTER, INK CONTAINER, RECORDING DEVICE, AND RECORDIN...

COPOLYMER, COLORING MATERIAL DISPERSION, INK, AND INK STORE CONTAINER

INK, METHOD OF MANUFACTURING INK, AND INK CARTRIDGE

INK, INK STORED CONTAINER, INKJET PRINTING METHOD, AND INKJET PRINT...

INK, INK STORED CONTAINER, INKJET RECORDING APPARATUS, AND RECORDED...

INK, INK CONTAINER, INKJET RECORDING DEVICE, AND RECORDED MATTER

COPOLYMER, INK, AND INK CONTAINER

INK, INK CARTRIDGE, INKJET RECORDING DEVICE, AND COPOLYMER

COPOLYMER, AQUEOUS INK, AND INK CARTRIDGE

COPOLYMER, AQUEOUS INK, AND INK CARTRIDGE

FULLERENE DERIVATIVE, AND METHOD OF PREPARING THE SAME

SUBSTITUENT-ELIMINABLE DIKETOPYRROLOPYRROLE DERIVATIVE, ORGANIC SEM...

SOLUTION, ORGANIC SEMICONDUCTOR MATERIAL, ORGANIC SEMICONDUCTOR FIL...

FULLERENE DERIVATIVE, AND METHOD OF PREPARING THE SAME

GALLIUM PHTHALOCYANINE COMPOUND, AND IMAGE BEARING MEMBER, IMAGE FO...

HYDROXYGALLIUM PHTHALOCYANINE COMPOSITE PIGMENT, ELECTROPHOTOGRAPHI...

GALLIUM PHTHALOCYANINE COMPOUND, GALLIUM PHTHALOCYANINE COMPOSITE P...

ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, IMAGE FORMING APPARATUS, IMAGE...

Electrophotographic Photoreceptor, And Image Forming Apparatus And...

ELECTROPHOTOGRAPHIC PHOTORECEPTOR AND METHOD OF PREPARING THE PHOTO...

SCOROTRON CORONA CHARGER, PROCESS CARTRIDGE, AND IMAGE FORMING APPA...

METHOD OF PREPARING COMPLEX-AZO PIGMENT AND COMPLEX-AZO PIGMENT THE...

CORONA CHARGER, AND PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS U...