Patents by Inventor Cosmo Henry De Gennaro

Cosmo Henry De Gennaro 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).

  • Phase shifting circuit
    Patent number: 4087737
    Abstract: A phase shifting circuit of the type comprising an operational amplifier with a capacitor in its negative feedback path and a resistor in series with its inverting input port is modified to provide adjustable phase shift. Adjustability is achieved by connecting a second capacitor in shunt with the resistor and, furthermore, a series-connected third capacitor and signal-inverting, controllable-gain amplifier also in shunt with the resistor.
    Type: Grant
    Filed: April 18, 1977
    Date of Patent: May 2, 1978
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventor: Cosmo Henry De Gennaro