Patents by Inventor Zagloul B. Kadah

Zagloul B. Kadah 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).

  • Solid state switch
    Patent number: 4129785
    Abstract: A solid state switch is provided which has four terminals, two for the A.C. power which is to be switched and two for signal input. The circuit comprises a full wave bridge rectifier having a light-activated silicon controlled rectifier connected across its D.C. terminals. A capacitor and a light-activated transistor are added to a zero-cross firing circuit whereby the solid state switch is protected from high voltage transients and is applicable for use with resistive, capacitive, and inductive loads.
    Type: Grant
    Filed: October 31, 1977
    Date of Patent: December 12, 1978
    Assignee: Monsanto Company
    Inventor: Zagloul B. Kadah