Patents by Inventor Shouzou Aoyagi

Shouzou Aoyagi 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).

  • Process for producing a sheet of color-developer for pressure-sensitive recording paper
    Patent number: 4820550
    Abstract: Disclosed herein is a process for producing a sheet of a color-developer for a pressure-sensitive recording paper, which process comprises the steps of dissolving an organic color-developer in an organic solvent, dispersing the formed solution into water, thereby forming minute liquid droplets with a diameter of 0.01 to 2 .mu.m, removing the solvent in the liquid droplets by heating while taking care not to cause any coalescence of the droplets and also any unstabilization of the emulsion, thereby forming a slurry comprising the minute granules of the color-developer and applying the slurry on a supporting sheet.
    Type: Grant
    Filed: October 6, 1987
    Date of Patent: April 11, 1989
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Makoto Naoki, Shouzou Aoyagi