Patents by Inventor George Wayne Berkstresser

George Wayne Berkstresser 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).

  • Article comprising a variable optical attenuator
    Patent number: 5978135
    Abstract: In an arrangement substantially like an optical isolator, appropriate choice of the composition of the magneto-optic element can result in a variable optical attenuator. The composition is selected to vary in the direction of light propagation, and also is selected such that the magneto-optic element comprises a compensation wall. The compensation wall is movable in response to a change in the temperature of the magneto-optic element, whereby the attenuation of the device is changed.
    Type: Grant
    Filed: May 3, 1999
    Date of Patent: November 2, 1999
    Assignee: Lucent Technologies Inc.
    Inventors: Robert Ralph Abbott, George Wayne Berkstresser, Charles David Brandle, Jr., Vincent Jerome Fratello, Steven Joy Licht