Patents by Inventor Sayuri Ohta

Sayuri Ohta 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).

  • Small-sized electronic device with depth gauge
    Patent number: 5189646
    Abstract: A small-sized electronic device with depth gauge includes a pressure sensor for measuring a present water pressure and outputting a pressure value. A memory stores the pressure data. A dive time measuring circuit measures a dive time interval. A mean depth calculator receives the pressure data and dive time interval and in response thereto outputs a mean depth value which is displayed on the device.
    Type: Grant
    Filed: January 10, 1991
    Date of Patent: February 23, 1993
    Assignee: Seiko Epson Corporation
    Inventors: Yukitoshi Sako, Fumitoshi Kamikawa, Sayuri Ohta