Patents by Inventor Kohei Katoh

Kohei Katoh 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).

  • Method of producing resin powder
    Patent number: 4206161
    Abstract: A method of producing resin powder in which a resin solution prepared by dissolving a resin in a water-miscible solvent is sprayed from a nozzle while spraying water from another nozzle located close to the first-said nozzle so as to form fine emulsified droplets of said resin solution in water, then at least a substantial portion of the water-miscible solvent in said emulsified droplets is rapidly transferred into water to produce a suspension of resin powder. The suspension is then filtered. Apparatus for practicing this method is also provided.
    Type: Grant
    Filed: October 13, 1977
    Date of Patent: June 3, 1980
    Assignee: Dai Nippon Toryo Co., Ltd.
    Inventors: Hiroshi Sato, Kohei Katoh, Rihei Tomida, Kazuo Kaneko, Kiichi Masago, Norio Kawabata, Kiyoshi Okuda