Masaki Okubo

Person

Koriyama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Charge control agent and toner using same
- Patent number 9,835,965
- Issue date Dec 5, 2017
- Hodogaya Chemical Co., Ltd.
- Masaki Okubo
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner, developer, and toner cartridge
- Patent number 9,703,223
- Issue date Jul 11, 2017
- Hodogaya Chemical Co., Ltd.
- Masaki Okubo
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner for developing electrostatic charge image
- Patent number 9,141,014
- Issue date Sep 22, 2015
- Hodogaya Chemical Co., Ltd.
- Masaki Okubo
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Surface-modified silica powder and method for producing the same, a...
- Patent number 8,962,866
- Issue date Feb 24, 2015
- Nippon Aerosil Co., Ltd.
- Yuki Amano
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Charge control agent composition and toner utilizing the same
- Patent number 8,580,470
- Issue date Nov 12, 2013
- Hodogaya Chemical Co., Ltd.
- Hideyuki Otsuka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Mixed cyclic phenol sulfides, and charge control agents and toners...
- Patent number 7,901,858
- Issue date Mar 8, 2011
- Hodogaya Chemical Co., Ltd.
- Masateru Yasumura
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Oxidized mixed cyclic phenol sulfides, and charge control agents an...
- Patent number 7,820,832
- Issue date Oct 26, 2010
- Hodogaya Chemical Co., Ltd.
- Masateru Yasumura
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Oxidized mixed cyclic phenol sulfides, and charge control agents an...
- Patent number 7,709,172
- Issue date May 4, 2010
- Hodogaya Chemical Co., Ltd.
- Masateru Yasumura
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Mono azo iron complex compound, and charge controlling agent and to...
- Patent number 7,402,369
- Issue date Jul 22, 2008
- Hodogaya Chemical Co., Ltd.
- Masaki Okubo
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Electrophotographic printing method, monoazo iron complex compound,...
- Patent number 7,094,512
- Issue date Aug 22, 2006
- Hodogaya Chemical Co., Ltd.
- Hideyuki Otsuka
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Organic metal complex compound and electrostatic image developing t...
- Patent number 6,627,368
- Issue date Sep 30, 2003
- Hodagaya Chemical Co., Ltd.
- Masaki Okubo
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Electrophotographic photoconductor and diamine compounds for use in...
- Patent number 5,312,707
- Issue date May 17, 1994
- Ricoh Company, Ltd.
- Masafumi Ota
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
Charge Control Agent and Toner Using Same
- Publication number 20160216628
- Publication date Jul 28, 2016
- Hodogaya Chemical Co., Ltd.
- Masaki OKUBO
- C07 - ORGANIC CHEMISTRY
Information Patent Application
TONER, DEVELOPER, AND TONER CARTRIDGE
- Publication number 20160209769
- Publication date Jul 21, 2016
- Hodogaya Chemical Co., Ltd.
- Masaki OKUBO
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER FOR DEVELOPING ELECTROSTATIC CHARGE IMAGE
- Publication number 20140004459
- Publication date Jan 2, 2014
- Hodogaya Chemical Co., Ltd.
- Masaki Okubo
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
SURFACE-MODIFIED SILICA POWDER AND METHOD FOR PRODUCING THE SAME, A...
- Publication number 20130296578
- Publication date Nov 7, 2013
- Hodogaya Chemical Co., Ltd.
- Yuki Amano
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
CHARGE CONTROL AGENT AND TONER USING SAME
- Publication number 20130177844
- Publication date Jul 11, 2013
- HODOGAYA CHEMICAL CO., LTD.
- Masateru Yasumura
- C07 - ORGANIC CHEMISTRY
Information Patent Application
CHARGE CONTROL AGENT COMPOSITION AND TONER UTILIZING THE SAME
- Publication number 20120315573
- Publication date Dec 13, 2012
- Hodogaya Chemical Co., Ltd.
- Hideyuki OTSUKA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CHARGE CONTROLLING AGENT AND TONER USING SAME
- Publication number 20120315576
- Publication date Dec 13, 2012
- Hodogaya Chemical Co., Ltd.
- Masateru Yasumura
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
Charge Controlling Agent and Toner Using Metal Compound of Cyclic P...
- Publication number 20110045396
- Publication date Feb 24, 2011
- Hodogaya Chemical Co., Ltd.
- Masateru Yasumura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
OXIDIZED MIXED CYCLIC PHENOL SULFIDES, AND CHARGE CONTROL AGENTS AN...
- Publication number 20090239169
- Publication date Sep 24, 2009
- Hodogaya Chemical Co., Ltd.
- Masateru Yasumura
- C07 - ORGANIC CHEMISTRY
Information Patent Application
CHARGE CONTROL AGENT COMPOSITION AND TONER UTILIZING THE SAME
- Publication number 20090104554
- Publication date Apr 23, 2009
- Hideyuki Otsuka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
OXIDIZED MIXED CYCLIC PHENOL SULFIDES, AND CHARGE CONTROL AGENTS AN...
- Publication number 20090042120
- Publication date Feb 12, 2009
- Hodogaya Chemical Co., Ltd.
- Masateru Yasumura
- C07 - ORGANIC CHEMISTRY
Information Patent Application
MIXED CYCLIC PHENOL SULFIDES, AND CHARGE CONTROL AGENTS AND TONERS...
- Publication number 20090035678
- Publication date Feb 5, 2009
- Hodogaya Chemical Co., Ltd.
- Masateru Yasumura
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Mono azo iron complex compound, and charge controlling agent and to...
- Publication number 20070020547
- Publication date Jan 25, 2007
- Hodogaya Chemical Co., Ltd.
- Masaki Okubo
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
Electrophotographic printing method, monoazo iron complex compound,...
- Publication number 20040191660
- Publication date Sep 30, 2004
- Hodogaya Chemical Co., Ltd.
- Hideyuki Otsuka
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Organic metal complex compound and electrostatic image developing t...
- Publication number 20010004667
- Publication date Jun 21, 2001
- Hodogaya Chemical Co.,Ltd.
- Masaki Okubo
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...

Masaki Okubo

Person

Patents Grantslast 30 patents

Charge control agent and toner using same

Toner, developer, and toner cartridge

Toner for developing electrostatic charge image

Surface-modified silica powder and method for producing the same, a...

Charge control agent composition and toner utilizing the same

Mixed cyclic phenol sulfides, and charge control agents and toners...

Oxidized mixed cyclic phenol sulfides, and charge control agents an...

Oxidized mixed cyclic phenol sulfides, and charge control agents an...

Mono azo iron complex compound, and charge controlling agent and to...

Electrophotographic printing method, monoazo iron complex compound,...

Organic metal complex compound and electrostatic image developing t...

Electrophotographic photoconductor and diamine compounds for use in...

Patents Applicationslast 30 patents

Charge Control Agent and Toner Using Same

TONER, DEVELOPER, AND TONER CARTRIDGE

TONER FOR DEVELOPING ELECTROSTATIC CHARGE IMAGE

SURFACE-MODIFIED SILICA POWDER AND METHOD FOR PRODUCING THE SAME, A...

CHARGE CONTROL AGENT AND TONER USING SAME

CHARGE CONTROL AGENT COMPOSITION AND TONER UTILIZING THE SAME

CHARGE CONTROLLING AGENT AND TONER USING SAME

Charge Controlling Agent and Toner Using Metal Compound of Cyclic P...

OXIDIZED MIXED CYCLIC PHENOL SULFIDES, AND CHARGE CONTROL AGENTS AN...

CHARGE CONTROL AGENT COMPOSITION AND TONER UTILIZING THE SAME

OXIDIZED MIXED CYCLIC PHENOL SULFIDES, AND CHARGE CONTROL AGENTS AN...

MIXED CYCLIC PHENOL SULFIDES, AND CHARGE CONTROL AGENTS AND TONERS...

Mono azo iron complex compound, and charge controlling agent and to...

Electrophotographic printing method, monoazo iron complex compound,...

Organic metal complex compound and electrostatic image developing t...