Patents by Inventor Satotaro TANAKA

Satotaro TANAKA 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).

  • Printing ink varnish, and printing ink composition using same
    Patent number: 9701855
    Abstract: The present invention relates to an oil-based printing ink varnish comprising a polyurethane prepared using a polymeric polyol and a polyisocyanate as the main structural components, wherein the polyurethane is synthesized using, as a chain extender, a polyfunctional amine which contains at least one secondary amino group in each molecule and in which the total of the number of primary amino groups and the number of secondary amino groups is 3 or more per molecule. The present invention is able to provide a printing ink varnish containing a non-aromatic organic solvent and having excellent laminate strength, blocking resistance, dot reproducibility and plate clogging resistance, as well as a laminate ink containing the varnish.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: July 11, 2017
    Assignees: TOYO INK SC HOLDINGS CO., LTD., TOYO INK CO., LTD.
    Inventors: Satotaro Tanaka, Harunori Narihiro, Nobutaka Takenaka, Yuika Hayasaka
  • PRINTING INK VARNISH, AND PRINTING INK COMPOSITION USING SAME
    Publication number: 20150353746
    Abstract: The present invention relates to an oil-based printing ink varnish comprising a polyurethane prepared using a polymeric polyol and a polyisocyanate as the main structural components, wherein the polyurethane is synthesized using, as a chain extender, a polyfunctional amine which contains at least one secondary amino group in each molecule and in which the total of the number of primary amino groups and the number of secondary amino groups is 3 or more per molecule. The present invention is able to provide a printing ink varnish containing a non-aromatic organic solvent and having excellent laminate strength, blocking resistance, dot reproducibility and plate clogging resistance, as well as a laminate ink containing the varnish.
    Type: Application
    Filed: January 10, 2014
    Publication date: December 10, 2015
    Applicants: TOYO INK SC HOLDINGS CO., LTD., TOYO INK CO., LTD.
    Inventors: Satotaro TANAKA, Harunori NARIHIRO, Nobutaka TAKENAKA, Yuika HAYASAKA