Patents by Inventor Naotake Sakai

Naotake Sakai 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).

  • Multiple magnet drive pump
    Patent number: 4850821
    Abstract: A multiple magnet drive pump is disclosed, which includes a driving magnet having opposite polarities circumferentially spaced apart from each other, a plurality of driven magnets on a circumference of the driving magnet for rotation in a non-contact state therewith, and a plurality of pump sections each having the driven magnet incorporated into a rotor for a pumping operation.
    Type: Grant
    Filed: March 10, 1988
    Date of Patent: July 25, 1989
    Assignee: Nikkiso Eiko Co., Ltd.
    Inventor: Naotake Sakai