Patents by Inventor Isao Sofue

Isao Sofue 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).

  • Meter with synthesized voice readout
    Patent number: 4864226
    Abstract: A meter is provided which visually displays and audibly announces values which are detected. A switch is manually operated to maintain the visual representation until the audible announcement has been generated.
    Type: Grant
    Filed: August 21, 1987
    Date of Patent: September 5, 1989
    Inventors: Minoru Tachimoto, Isao Sofue