Patents by Inventor Alexander Kastalsky

Alexander Kastalsky 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).

  • Germanium p-i-n photodetector on silicon substrate
    Patent number: 4514748
    Abstract: Devices useful, for example, as detectors in telecommunications systems have been formed utilizing a specific structure. In particular, a p-i-n device is fabricated on a silicon substrate having the necessary circuitry for signal processing. This p-i-n device is produced by depositing an intermediary region having a compositional gradient on this substrate and forming a germanium based p-i-n diode on the intermediary region.
    Type: Grant
    Filed: November 21, 1983
    Date of Patent: April 30, 1985
    Assignee: AT&T Bell Laboratories
    Inventors: John C. Bean, Alexander Kastalsky, Sergey Luryi