Patents by Inventor Usei Jo

Usei Jo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Electrostatic image developing toner
    Patent number: 9740119
    Abstract: The invention is to provide a positively charging electrostatic image developing toner capable of providing a high quality and high gloss and excellent in stability in long term use and environmental stability, and especially not causing fog in the use at high temperature and high humidity condition. The present invention relates to an electrostatic image developing toner comprising toner mother particles containing a binder resin and a colorant, wherein the binder resin contains a repeating unit having 4 to 20 ether bonds, containing a carbon atom, a hydrogen atom and an oxygen atom, and accounting for a specific amount.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: August 22, 2017
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Usei Jo, Tetsuharu Yuge, Maki Saito, Masami Tsurumori
  • ELECTROSTATIC IMAGE DEVELOPING TONER
    Publication number: 20160139519
    Abstract: The invention is to provide a positively charging electrostatic image developing toner capable of providing a high quality and high gloss and excellent in stability in long term use and environmental stability, and especially not causing fog in the use at high temperature and high humidity condition. The present invention relates to an electrostatic image developing toner comprising toner mother particles containing a binder resin and a colorant, wherein the binder resin contains a repeating unit having 4 to 20 ether bonds, containing a carbon atom, a hydrogen atom and an oxygen atom, and accounting for a specific amount.
    Type: Application
    Filed: January 21, 2016
    Publication date: May 19, 2016
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Usei Jo, Tetsuharu Yuge, Maki Saito, Masami Tsurumori
  • ELECTROSTATIC IMAGE DEVELOPING TONER
    Publication number: 20140141367
    Abstract: The invention is to provide a positively charging electrostatic image developing toner capable of providing a high quality and high gloss and excellent in stability in long term use and environmental stability, and especially not causing fog in the use at high temperature and high humidity condition. The present invention relates to an electrostatic image developing toner comprising toner mother particles containing a binder resin and a colorant, wherein the binder resin contains a repeating unit having 4 to 20 ether bonds, containing a carbon atom, a hydrogen atom and an oxygen atom, and accounting for a specific amount.
    Type: Application
    Filed: January 28, 2014
    Publication date: May 22, 2014
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Usei JO, Tetsuharu YUGE, Maki SAITO, Masami TSURUMORI
  • Toner for the development of electrostatic image and process for the preparation thereof
    Patent number: 6610453
    Abstract: The present invention provides a process for the preparation of a novel toner satisfying a high resolution, a low temperature fixability and a high offset resistance at a low cost. A novel toner for the development of an electrostatic image is provided comprising an agglomerate of particles containing at least primary polymer particles, wherein said primary polymer particles substantially comprise a wax encapsulated therein.
    Type: Grant
    Filed: June 23, 1999
    Date of Patent: August 26, 2003
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Hideko Akai, Noriaki Takahashi, Usei Jo, Tomohiro Yamazaki, Masahiro Nukui, Kazunori Maruyama, Takashi Kokubo
  • TONER FOR THE DEVELOPEMENT OF ELECTROSTATIC IMAGE AND PROCESS FOR THE PREPARATION THEREOF
    Publication number: 20020012863
    Abstract: The present invention provides a process for the preparation of a novel toner satisfying a high resolution, a low temperature fixability and a high offset resistance at a low cost. A novel toner for the development of an electrostatic image is provided comprising an agglomerate of particles containing at least primary polymer particles, wherein said primary polymer particles substantially comprise a wax encapsulated therein.
    Type: Application
    Filed: June 23, 1999
    Publication date: January 31, 2002
    Applicant: Hideko Akai
    Inventors: HIDEKO AKAI, NORIAKI TAKAHASHI, USEI JO, TOMOHIRO YAMAZAKI, MASAHIRO NUKUI, KAZUNORI MARUYAMA, TAKASHI KOKUBO
  • Toner for the development of electrostatic image and process for the preparation thereof
    Publication number: 20020006569
    Abstract: The present invention provides a process for the preparation of a novel toner satisfying a high resolution, a low temperature fixability and a high offset resistance at a low cost. A novel toner for the development of an electrostatic image is provided comprising an agglomerate of particles containing at least primary polymer particles, wherein said primary polymer particles substantially comprise a wax encapsulated therein.
    Type: Application
    Filed: January 9, 2001
    Publication date: January 17, 2002
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Hideko Akai, Noriaki Takahashi, Usei Jo, Tomohiro Yamazaki, Masahiro Nukui, Kazunori Maruyama, Takashi Kokubo