Patents by Inventor Leon Weinglass

Leon Weinglass 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).

  • Circuit for selectively exciting one of a pair of light emitting diodes
    Patent number: 4484105
    Abstract: A circuit for selectively lighting one of a pair of light-emitting diodes (LEDs) arranged in a parallel, back-to-back, circuit configuration also known as an anti-parallel circuit configuration. One side of the configuration is connected with ground connecting means through a first photon-emitting device which device is optically coupled to a first photon-responsive device connected between the other side of the configuration and a current source. The other side of the configuration is also connected with a ground connecting means through a second photon-emitting device which device is optically coupled to a second photon-responsive device connected between the first side of the configuration and the current source.
    Type: Grant
    Filed: October 28, 1982
    Date of Patent: November 20, 1984
    Assignee: AT&T Technologies, Inc.
    Inventors: Richard J. Kriete, Rafael R. Orsini, Leon Weinglass
  • Console faceplate for teleconferencing bridge
    Patent number: D278630
    Type: Grant
    Filed: December 27, 1982
    Date of Patent: April 30, 1985
    Assignee: AT&T Technologies, Inc.
    Inventors: Alfred R. Ender, Robert F. Iacullo, Richard J. Kriete, Alvin R. Tilley, Leon Weinglass