Patents by Inventor Harunobu Komatsu

Harunobu Komatsu 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).

  • Publication number: 20090109521
    Abstract: An electrophoretic display sheet capable of increasing pressure resistance and bleed resistance of microcapsules and constructing an electrophoretic display device stably operable for a long period of time, a highly reliable electrophoretic display device and a highly reliable electronic apparatus are provided. The electrophoretic display sheet includes a base substrate having one major surface, and a microcapsule-containing layer provided on the side of the one major surface of the base substrate and having one major surface, the microcapsule-containing layer including a plurality of microcapsules, each of the microcapsules having a shell and an electrophoretic dispersion liquid containing at least one kind of electrophoretic particles and encapsulated into the shell, wherein the microcapsules exist in a generally spherical shape within the microcapsule-containing layer.
    Type: Application
    Filed: October 29, 2008
    Publication date: April 30, 2009
    Applicants: SEIKO EPSON CORPORATION, NIPPON SHOKUBAI CO., LTD.
    Inventors: Harunobu Komatsu, Hitoshi Yamamoto, Mitsuo Kushino, Tomoyuki Kuwamoto
  • Publication number: 20090061209
    Abstract: The coating composition for electrophoretic display devices according to the present invention contains microcapsules for electrophoretic display devices and a binder resin, wherein the binder resin has a glass transition temperature (Tg) in a range of from ?85° C. to ?10° C. as calculated by FOX formula and has a residual monomer concentration of 500 ppm or lower in a solid content thereof. The sheet for electrophoretic display devices according to the present invention has a microcapsule layer formed from the above-described coating composition for electrophoretic display devices on a base material sheet. The sheet for electrophoretic display devices according to the present invention can be used, as its applications, for electrophoretic display devices using the sheets, and electronic equipments using the electrophoretic display devices.
    Type: Application
    Filed: August 18, 2008
    Publication date: March 5, 2009
    Inventors: Hitoshi Yamamoto, Harunobu Komatsu, Tomoyuki Kuwamoto, Mitsuo Kushino
  • Publication number: 20090059349
    Abstract: The sheet for electrophoretic display devices according to the present invention includes a data displaying player between electrically conductive layers of two opposite electrode films, the data display layer containing microcapsules for electrophoretic display devices and a binder resin, wherein the binder resin has a weight-average molecular weight of from 40,000 to 300,000 and a glass transition temperature of from ?50° C. to 10° C. This sheet can be produced by forming the data display layer on an electrically conductive layer of a first electrode film and putting an electrically conductive layer of a second electrode film on the date displaying layer, followed by lamination. This sheet can be used, as its applications, for electrophoretic display devices using the sheets for electrophoretic display devices, and electronic equipments using the electrophoretic display devices.
    Type: Application
    Filed: August 21, 2008
    Publication date: March 5, 2009
    Inventors: Hitoshi Yamamoto, Harunobu Komatsu, Hironobu Akutagawa, Yuji Misawa
  • Publication number: 20080279734
    Abstract: A method of manufacturing a toner by using a liquid dispersion in which a dispersoid containing a material for manufacturing a toner is dispersed in a dispersion medium, and containing a dispersant having a function of improving the dispersibility of the dispersoid, the method including the steps of: preparing the liquid dispersion, applying ozone to the liquid dispersion and/or a liquid dispersion from which at least a portion of the dispersion medium has been removed, and irradiating UV-rays to the liquid dispersion and/or the liquid dispersion from which at least a portion of the dispersion medium has been removed.
    Type: Application
    Filed: July 21, 2008
    Publication date: November 13, 2008
    Applicant: Seiko Epson Corporation
    Inventors: Harunobu KOMATSU, Keiichi INOUE, Takashi TESHIMA, Ken IKUMA
  • Patent number: 7416829
    Abstract: A method of manufacturing a toner by using a liquid dispersion in which a dispersoid containing a material for manufacturing a toner is dispersed in a dispersion medium, and containing a dispersant having a function of improving the dispersibility of the dispersoid, the method including the steps of: preparing the liquid dispersion, applying ozone to the liquid dispersion and/or a liquid dispersion from which at least a portion of the dispersion medium has been removed, and irradiating UV-rays to the liquid dispersion and/or the liquid dispersion from which at least a portion of the dispersion medium has been removed.
    Type: Grant
    Filed: November 16, 2005
    Date of Patent: August 26, 2008
    Assignee: Seiko Epson Corporation
    Inventors: Harunobu Komatsu, Keiichi Inoue, Takashi Teshima, Ken Ikuma
  • Publication number: 20080192330
    Abstract: The preservation method of microcapsules for electrophoretic display devices according to the present invention includes preserving microcapsules for electrophoretic display devices in a water-based medium having an electric conductivity of 500 ?S/cm or lower. The preservation under such conditions makes it possible to preserve microcapsules for electrophoretic display devices over a long period of time without deteriorating their electrophoretic properties. The microcapsules for electrophoretic display devices, which have been preserved by the preservation method of the present invention, can be used, as its applications, for sheets for electrophoretic display devices and electrophoretic display devices using the sheets.
    Type: Application
    Filed: February 13, 2008
    Publication date: August 14, 2008
    Inventors: Hitoshi Yamamoto, Harunobu Komatsu, Mitsuo Kushino, Tomoyuki Kuwamoto
  • Publication number: 20060115756
    Abstract: A method of manufacturing a toner by using a liquid dispersion in which a dispersoid containing a material for manufacturing a toner is dispersed in a dispersion medium, and containing a dispersant having a function of improving the dispersibility of the dispersoid, the method including the steps of: preparing the liquid dispersion, applying ozone to the liquid dispersion and/or a liquid dispersion from which at least a portion of the dispersion medium has been removed, and irradiating UV-rays to the liquid dispersion and/or the liquid dispersion from which at least a portion of the dispersion medium has been removed.
    Type: Application
    Filed: November 16, 2005
    Publication date: June 1, 2006
    Inventors: Harunobu Komatsu, Keiichi Inoue, Takashi Teshima, Ken Ikuma