Patents by Inventor Akira Mizutana

Akira Mizutana 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).

  • Ink for ink jet recording and ink set for ink jet recording
    Patent number: 8697774
    Abstract: The ink for ink jet recording includes a sparingly water-soluble alkanediol, a resin, and a coloring material, wherein the content of the coloring material is from 1 to 3% by mass based on the total mass of the ink, the surface tension is from 21 to 25 mN/m, and the thixotropic index (TI) represented by the following formula (1), as determined at a time point when its content becomes 40% by mass based on the total mass before the evaporation of the ink by the evaporation of the ink, is from 2 to 110: TI=?(1 s?1)/?(1000 s?1)??(1).
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: April 15, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Kazumasa Tomura, Akira Mizutana, Shinichi Yamamoto