Patents by Inventor Masanobu Motoki

Masanobu Motoki 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).

  • Patent number: 4948692
    Abstract: A combination toner for xerographic image formation having conductive portions and insulating portions is provided. The conductive portions function to accumulate a charge in the toner particles and the insulating portions function to lengthen the period of discharge of the accumulated charge. The toner can be either magnetic or non-magnetic and improves image formation and transfer.
    Type: Grant
    Filed: May 3, 1988
    Date of Patent: August 14, 1990
    Assignee: Seiko Epson Corporation
    Inventors: Koichi Higashimura, Yoshinori Miyazawa, Tsuneo Handa, Teruyuki Mizumoto, Hiroshi Ito, Atsushi Uchino, Masanobu Motoki, Masanao Kunugi, Tahei Ishiwatari, Hidetsugu Shimura
  • Patent number: 4680046
    Abstract: A method of preparing preforms for optical fibers is provided. The method includes preparation of a first sol solution of a silicon alkoxide hydrolyzed with an acid and ultrafine particle silica, placement of the first sol solution into a container, and gelation of the first sol solution while the container is being rotated to yield a wet gel having a center hole. A second sol solution having a different composition than the first sol solution is prepared and used to fill the center hole in the wet gel. The second sol solution is then gelled to a wet gel composite and the composite is dried and sintered to yield the preform.
    Type: Grant
    Filed: October 2, 1985
    Date of Patent: July 14, 1987
    Assignee: Seiko Epson Kabushiki Kaisha
    Inventors: Nobutaka Matsuo, Masanobu Motoki, Yoshitaka Itoh, Sadao Kanbe, Haruo Osafune
  • Patent number: 4680048
    Abstract: A sol-gel method of preparing doped glass articles is provided. The glass is formed by preparing a sol solution containing hydrolyzed silicon alkoxide and ultrafine particle silica. The sol solution can also include a dopant. The sol solution is gelled in a container, dried and sintered to yield the doped silica glass articles.
    Type: Grant
    Filed: October 1, 1985
    Date of Patent: July 14, 1987
    Assignee: Seiko Epson Kabushiki Kaisha
    Inventors: Masanobu Motoki, Nobutaka Matsuo, Sadao Kanbe, Haruo Osafune, Yoshitaka Itoh
  • Patent number: 4622056
    Abstract: A method for preparing high quality silica glass articles is provided. The glass is prepared by hydrolyzing silicon alkoxide with a basic reagent to yield a first solution, hydrolyzing a silicon alkoxide with an acid reagent to yield a second solution, mixing the first solution with the second solution at a predetermined mixing rate to yield a sol solution, pouring the sol solution into a container, gelling the sol solution to a wet gel, drying the wet gel to a dry gel, and sintering the dry gel to yield a silica glass.
    Type: Grant
    Filed: February 6, 1986
    Date of Patent: November 11, 1986
    Assignee: Seiko Epson Corporation
    Inventors: Nobutaka Matsuo, Yoshitaka Itoh, Sadao Kanbe, Haruo Osafune, Masanobu Motoki