Patents by Inventor Yoshihiro Ohsumi

Yoshihiro Ohsumi 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).

  • Step of passenger conveyor method of manufacturing same, and wavy metal plate
    Patent number: 4984673
    Abstract: A support surface, particularly for the tread of passenger conveyers, as anti-slip, strengthening and wear resistant grooves deformed in the top portion of cleats formed by corrugating metal.
    Type: Grant
    Filed: March 3, 1989
    Date of Patent: January 15, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Chuichi Saito, Kazuhira Ojima, Yoshihiro Ohsumi