Patents by Inventor Frank Z. Harwylo

Frank Z. Harwylo 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).

  • Heterojunction semiconductor device
    Patent number: 4158849
    Abstract: A layer of germanium on a body of P type conductivity single crystal indium phosphide provides a blocking heterojunction. This device will emit light when a suitable voltage is placed thereacross or the device can be used as a photoconductor to generate electrons when light is directed thereon.
    Type: Grant
    Filed: March 27, 1978
    Date of Patent: June 19, 1979
    Assignee: RCA Corporation
    Inventor: Frank Z. Harwylo