Patents by Inventor Jyun Ito

Jyun 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: 8556400
    Abstract: The present invention aims to provide an ink for ink jet recording that is excellent in storage stability and discharge stability and attains high coloration on regular paper or gloss paper and high glossiness on gloss paper. The ink for ink jet recording of the invention includes: water; and a pigment dispersed by using a polymer which is obtained by polymerizing at least 50% by weight or more of benzylacrylate and 15% by weight or less of (meth)acrylic acid as components of the polymer and has an acid value of no less than 50 mgKOH/g and no more than 120 mgKOH/g and a weight average molecular weight of no less than 10000 and no more than 120000.
    Type: Grant
    Filed: October 24, 2005
    Date of Patent: October 15, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Masahiro Yatake, Motoki Masuda, Jyun Ito, Yasuhiro Oki, Hiroko Hayashi
  • Publication number: 20070263054
    Abstract: The present invention aims to provide an ink for ink jet recording that is excellent in storage stability and discharge stability and attains high coloration on regular paper or gloss paper and high glossiness on gloss paper. The ink for ink jet recording of the invention includes: water; and a pigment dispersed by using a polymer which is obtained by polymerizing at least 50% by weight or more of benzylacrylate and 15% by weight or less of (meth)acrylic acid as components of the polymer and has an acid value of no less than 50 mgKOH/g and no more than 120 mgKOH/g and a weight average molecular weight of no less than 10000 and no more than 120000.
    Type: Application
    Filed: October 24, 2005
    Publication date: November 15, 2007
    Inventors: Masahiro Yatake, Motoki Masuda, Jyun Ito, Yasuhiro Oki, Hiroko Hayashi