Patents by Inventor George E. Devlin

George E. Devlin 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).

  • Optoelectronic devices using persistent photoconductivity
    Patent number: 5920409
    Abstract: A compound semiconductor that is suitably doped to exhibit the DX effect is irradiated with an optical beam of spatially varying intensity whereby localized regions of persistently higher conductivity and lower refractive index are created in the semiconductor where sufficient intensity of the beam was incident. The persistently higher conductive region can be used to bridge selected gaps in conductive paths on a support member use in memory device and the regions of lower refractive index can be used to providing guiding in a wave guide, to form high resolution gratings, or to form holograms.
    Type: Grant
    Filed: May 31, 1996
    Date of Patent: July 6, 1999
    Assignee: NEC Research Institute, Inc.
    Inventors: James D. Chadi, George E. Devlin, Richard A. Linke, Robert L. MacDonald, Tineke Thio