Patents by Inventor Fumitsugu Ito

Fumitsugu Ito 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: 6802893
    Abstract: An ink for ink jet recording including at least a particulate pigment having a sulfur-containing dispersibility providing group chemically bonded to the pigment surface with a treatment containing sulfur, a penetrating agent and a liquid component including water. In one embodiment, the liquid component includes polyvalent metal ions and has a sulfur content that is 2,000 ppm or less as calculated in terms of SO42−. In other embodiments, the ink has (a) a sulfonic acid anion group or a sulfinic acid anion group and an alkaline metal or monovalent counter ion; (b) a penetrating agent having the formula R—EOn2—POm2—X; and (c) a sulfur-containing dispersibility providing group in an amount of 10×106 equivalent or more per gram of particulate pigment.
    Type: Grant
    Filed: April 11, 2001
    Date of Patent: October 12, 2004
    Assignee: Seiko Epson Corporation
    Inventors: Hidehiko Komatsu, Hiroto Nakamura, Masahiro Yatake, Hiroko Hayashi, Makoto Matsuzaki, Fumitsugu Ito, Hitoshi Ohta
  • Patent number: 6723784
    Abstract: A coating liquid for forming a transparent topcoat, without requiring a hardening or fixing process that uses heating or UV radiation. The coating liquid imparts light resistance, water resistance, fixation, and glossiness to recordings. Also, a recording method using the coating liquid, and recordings produced thereby. The liquid, which is applied to recorded images, contains at least water, fine polymer particles, and a penetrating agent, preferably a penetrating agent selected acetylene glycol surfactants, acetylene alcohol surfactants, glycol ethers, and 1,2-alkylene glycols. Also, an image recording method for forming an even, transparent coating layer by spraying the coating liquid during an ink jet recording process, as well as recordings produced thereby.
    Type: Grant
    Filed: April 10, 2001
    Date of Patent: April 20, 2004
    Assignee: Seiko Epson Corporation
    Inventors: Fumitsugu Ito, Masahiro Yatake, Hidehiko Komatsu, Hitoshi Ota, Kazuhiko Hara
  • Publication number: 20020009547
    Abstract: An object of the present invention is to provide a coating liquid for forming a transparent topcoat, without requiring a hardening or fixing process that uses heating of UV radiation, and imparting light resistance, water resistance, fixation, and glossiness to recordings, together with a recording method therefor, and recordings produced thereby.
    Type: Application
    Filed: April 10, 2001
    Publication date: January 24, 2002
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Fumitsugu Ito, Masahiro Yatake, Hidehiko Komatsu, Hitoshi Ota, Kazuhiko Hara