Patents by Inventor Nobuyuki Shishido

Nobuyuki Shishido 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).

  • Stirring apparatus
    Patent number: 4022438
    Abstract: In stirring apparatus of the type provided with helical ribbon impeller, the ratio of the width of each impeller blade to the diameter of impeller is made to be from 1.5/10 to 3/10 and the blades are provided with openings having an opening ratio expressed by a relation0.59/.sup.3 .sqroot.D < opening ratio < 2.28/.sup.3 .sqroot.Dwhere D represents the diameter of the impeller.
    Type: Grant
    Filed: May 8, 1975
    Date of Patent: May 10, 1977
    Assignee: Mitsubishi Kasei Kogyo Kabushiki Kaisha
    Inventors: Nobuyuki Shishido, Kazutami Muramatsu, Kikuo Moriya, Seiiti Yasuda