Patents by Inventor Phil Won Yu

Phil Won Yu 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).

  • Fabrication of ion implanted P-N junction devices
    Patent number: 4004342
    Abstract: Light emitters and photovoltaic detectors are fabricated by ion implantation of cadmium, zinc, bromine or chlorine ions into a p-type CuInSe.sub.2 substrate so as to form a p-n semiconductor junction.
    Type: Grant
    Filed: February 23, 1976
    Date of Patent: January 25, 1977
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Yoon Soo Park, Phil Won Yu