Patents by Inventor Bertram R. Rex

Bertram R. Rex 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).

  • Controlled breakover bidirectional semiconductor switch
    Patent number: 4797720
    Abstract: A two-terminal bidirectional semiconductor switching device comprising a body of silicon semiconductor material having in one portion a five-zone switching element and, in another portion integral therewith, a three-zone bidirectional voltage-sensitive breakdown element, there being means including another portion of the body connecting the three-zone element as a gating element to said five-zone element so as to trigger conduction therein bidirectionally when voltage breakdown occurs in either direction in the three-zone element.
    Type: Grant
    Filed: July 29, 1981
    Date of Patent: January 10, 1989
    Assignee: American Telephone and Telegraph Company, AT&T Bell Laboratories
    Inventors: Richard Lindner, Bertram R. Rex