Patents by Inventor Hideyasu Jiko

Hideyasu Jiko 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).

  • Amplifier circuit
    Patent number: 4716378
    Abstract: An amplifier circuit for use, e.g., in audio appliances, comprises two amplifiers; a first amplifier for controlling the output voltage, and a second amplifier for driving output electric current. An impedance circuit is connected to both outputs of the first and second amplifiers. Thus, the amplifier circuit accurately controls output electric power in response to the input signal and yet providing sufficient electric current for driving a speaker.
    Type: Grant
    Filed: April 14, 1986
    Date of Patent: December 29, 1987
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hideyasu Jiko, Tomoyuki Hayashi