Patents by Inventor Misayo Nakamura

Misayo Nakamura 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).

  • Vertically movable staircase
    Patent number: 5213191
    Abstract: A vertically movable staircase carries on a vertical pillar a plurality of steps sequentially secured to the pillar along a spiral line thereon, the pillar being vertically moved while being axially rotated by a driving device. The staircase is space saving and simple in structure.
    Type: Grant
    Filed: May 22, 1992
    Date of Patent: May 25, 1993
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Susumu Tahara, Satoshi Nakagawa, Misayo Nakamura