Patents by Inventor Susumu Akiyama

Susumu Akiyama 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).

  • Hybrid feedback amplifier of a push-pull type
    Patent number: 4004241
    Abstract: A feedback amplifier including a first and a second amplifier section comprises an autotransformer winding connected between common terminals of the respective amplifier sections and across a feedback circuit. A terminating impedance is connected between the output terminal of one of the amplifier sections and the autotransformer winding at a point nearer to its point of connection to the other amplifier section common terminal. Another terminating impedance is connected between the other amplifier section output terminal and the autotransformer winding at another point nearer to its point of connection to the common terminal of the above-mentioned one amplifier section. The terminating impedances may be used on the input side. They may be connected to the autotransformer winding at its points of connection to the respective common terminals, when the autotransformer may be dispensed with.
    Type: Grant
    Filed: July 23, 1975
    Date of Patent: January 18, 1977
    Assignee: Nippon Electric Company, Ltd.
    Inventor: Susumu Akiyama