Patents by Inventor Jerome J. Joseph

Jerome J. Joseph 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).

  • Fast turn-off circuit for solid-state relays or the like
    Patent number: 5360979
    Abstract: A fast turn-off circuit for solid-state relays or the like. The relay has a photodiode array for controlling the conductivity of an output transistor. A JFET switch closes to discharge the gate of the output transistor when a photodiode array stops producing current. A bipolar transistor switch, upon detecting the JFET switch closure, discharges the photodiode array.
    Type: Grant
    Filed: August 5, 1993
    Date of Patent: November 1, 1994
    Assignee: AT&T Bell Laboratories
    Inventors: Jerome J. Joseph, Michael F. Petras, Steven B. Witmer