Patents by Inventor Suteo Tsutsumi

Suteo Tsutsumi 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).

  • Monitoring system for a predetermined field of view
    Patent number: 4554459
    Abstract: A lift control system includes a spatial filter for producing a signal having various features, a discriminator for discriminating one or more features of the signal, and for producing a control signal when at least one of the features discriminated falls in a predetermined range, and active devices connected to the discriminator. The spatial filter is defined by a semi-spherical bowl having a plurality of openings or by a poly-face prism which is made from a plano-convex lens with its curved face so polished or cut as to have a plurality of flat faces.
    Type: Grant
    Filed: December 15, 1981
    Date of Patent: November 19, 1985
    Assignee: Fujitec Co., Ltd.
    Inventors: Suteo Tsutsumi, Hiroshi Koh