Patents by Inventor Mitsuhito TAKAMURA

Mitsuhito TAKAMURA 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).

  • Rosin-modified resin and method for producing same, varnish for active energy ray-curable lithographic ink, active energy ray-curable lithographic ink, and printed product
    Patent number: 11414518
    Abstract: A rosin-modified resin having a structural unit (ab) derived from a compound obtained by addition of an ?,?-unsaturated carboxylic acid or acid anhydride thereof (B) to a conjugated rosin acid (A), a structural unit (c) derived from an organic monobasic acid (C) excluding the conjugated rosin acid (A), a structural unit (d) derived from an aliphatic polybasic acid anhydride (D), and a structural unit (e) derived from a polyol (E), wherein the weight ratio between the structural unit (ab) and the structural unit (c) is within a range from 100:80 to 100:350.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: August 16, 2022
    Assignees: TOYO INK SC HOLDINGS CO., LTD., TOYO INK CO., LTD.
    Inventors: Akeha Fukushima, Mitsuhito Takamura, Junya Suenaga
  • ROSIN-MODIFIED RESIN AND METHOD FOR PRODUCING SAME, VARNISH FOR ACTIVE ENERGY RAY-CURABLE LITHOGRAPHIC INK, ACTIVE ENERGY RAY-CURABLE LITHOGRAPHIC INK, AND PRINTED PRODUCT
    Publication number: 20210206913
    Abstract: A rosin-modified resin having a structural unit (ab) derived from a compound obtained by addition of an ?,?-unsaturated carboxylic acid or acid anhydride thereof (B) to a conjugated rosin acid (A), a structural unit (c) derived from an organic monobasic acid (C) excluding the conjugated rosin acid (A), a structural unit (d) derived from an aliphatic polybasic acid anhydride (D), and a structural unit (e) derived from a polyol (E), wherein the weight ratio between the structural unit (ab) and the structural unit (c) is within a range from 100:80 to 100:350.
    Type: Application
    Filed: March 22, 2017
    Publication date: July 8, 2021
    Applicants: TOYO INK SC HOLDINGS CO., LTD., TOYO INK CO., LTD.
    Inventors: Akeha FUKUSHIMA, Mitsuhito TAKAMURA, Junya SUENAGA