Patents by Inventor John J. Elchisak

John J. Elchisak 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).

  • Selenium and selenium alloy evaporation technique
    Patent number: 4015029
    Abstract: A coating composition and method for vacuum coating inorganic photoconductive material onto a suitable substrate or backing through utilization of the compositions and irradiation heating devices.
    Type: Grant
    Filed: June 27, 1975
    Date of Patent: March 29, 1977
    Assignee: Xerox Corporation
    Inventor: John J. Elchisak