Patents by Inventor Hiroshi Oaki

Hiroshi Oaki 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).

  • Fine bubble generating apparatus
    Patent number: 5230838
    Abstract: A fine bubble generating apparatus aiming at reducing diameters of bubbles generated through outer surface of a hollow fiber by giving a running speed to liquid contacting the surface of the fiber without utilizing mechanical power developed by a pump or the like.
    Type: Grant
    Filed: September 4, 1991
    Date of Patent: July 27, 1993
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventors: Hiroshi Oaki, Hiroshi Sasaki