Masaya Tojo

Person

Tsukuba-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Toner and charge control agent using pyrazolone derivative or salt...
- Patent number 10,474,050
- Issue date Nov 12, 2019
- Hodogaya Chemical Co., Ltd.
- Jun Watanabe
- C07 - ORGANIC CHEMISTRY
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
Charge control agent and toner using same
- Patent number 8,790,855
- Issue date Jul 29, 2014
- Hodogaya Chemical Co., Ltd.
- Ikuo Kimura
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
TONER AND CHARGE CONTROL AGENT USING PYRAZOLONE DERIVATIVE OR SALT...
- Publication number 20180275546
- Publication date Sep 27, 2018
- Hodogaya Chemical Co., Ltd.
- JUN WATANABE
- C07 - ORGANIC CHEMISTRY
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
CHARGE CONTROLLING AGENT AND TONER USING SAME
- Publication number 20140205945
- Publication date Jul 24, 2014
- Hodogaya Chemical Co., Ltd.
- Ikuo Kimura
- C07 - ORGANIC CHEMISTRY
Information Patent Application
CHARGE CONTROL AGENT AND TONER USING SAME
- Publication number 20130266895
- Publication date Oct 10, 2013
- HODOGAYA CHEMICAL CO., LTD.
- Ikuo Kimura
- C07 - ORGANIC CHEMISTRY
Information Patent Application
CHARGE CONTROL AGENT AND TONER USING SAME
- Publication number 20130177843
- Publication date Jul 11, 2013
- HODOGAYA CHEMICAL CO., LTD.
- Ikuo Kimura
- C07 - ORGANIC CHEMISTRY
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 CONTROLLING AGENT AND TONER USING SAME
- Publication number 20130149641
- Publication date Jun 13, 2013
- Hodogaya Chemical Co., Ltd.
- Ikuo Kimura
- C07 - ORGANIC CHEMISTRY
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...

Masaya Tojo

Person

Patents Grantslast 30 patents

Toner and charge control agent using pyrazolone derivative or salt...

Charge control agent and toner using same

Toner, developer, and toner cartridge

Charge control agent and toner using same

Patents Applicationslast 30 patents

TONER AND CHARGE CONTROL AGENT USING PYRAZOLONE DERIVATIVE OR SALT...

Charge Control Agent and Toner Using Same

TONER, DEVELOPER, AND TONER CARTRIDGE

CHARGE CONTROLLING AGENT AND TONER USING SAME

CHARGE CONTROL AGENT AND TONER USING SAME

CHARGE CONTROL AGENT AND TONER USING SAME

CHARGE CONTROL AGENT AND TONER USING SAME

CHARGE CONTROLLING AGENT AND TONER USING SAME

CHARGE CONTROLLING AGENT AND TONER USING SAME