Patents by Inventor Nobuhiro Hotaka

Nobuhiro Hotaka 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).

  • Inverter system
    Patent number: 4660137
    Abstract: An improved invertor control system for controlling overcurrent. The system includes a means for detecting the voltage and current levels in the invertor. In response the level of current is controlled to maintain a uniform output.
    Type: Grant
    Filed: November 13, 1984
    Date of Patent: April 21, 1987
    Assignee: Shinaro Electric Co., Ltd.
    Inventor: Nobuhiro Hotaka
  • Control circuit for inverter
    Patent number: 4646221
    Abstract: A controlled circuit for generating signals for switching the switch elements of a DC to AC inverter. The circuit monitors the output waveform of the inverter and controls the firing of the switch elements in the inverter from DC to AC inverter circuit to restore it to a sinusoidal waveform in the event that it is distorted by non linear loads and to recover the voltage level within the allowable band in the event that it is disturbed by step load changes.
    Type: Grant
    Filed: May 30, 1985
    Date of Patent: February 24, 1987
    Assignee: Shinano Electric Co., Ltd.
    Inventors: Yoshihiro Sekino, Masayuki Aoki, Nobuhiro Hotaka