Patents by Inventor Bill Soichro Yamanashi

Bill Soichro Yamanashi 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).

  • Filters for tape recording systems
    Patent number: 4019203
    Abstract: A tape recorder having a solenoid coil-plunger type actuator for performing a mechanical function within the recorder incorporates the solenoid coil into the circuitry to serve as the inductive component of a filter adapted to filter the noise components produced by the DC tape driving motor, or to filter the output of the DC wave rectifier or to filter other outputs within the recorder.
    Type: Grant
    Filed: October 31, 1975
    Date of Patent: April 19, 1977
    Assignee: Electromechanics Research
    Inventors: Bill Soichro Yamanashi, Tadashi Fujita