Patents by Inventor Paul W. A. McIlroy

Paul W. A. McIlroy 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).

  • Light emitting semiconductor device
    Patent number: 4701774
    Abstract: In a carrier injection type light emitting semiconductor device with a QW structure, a p-type impurity doped layer and/or an n-type impurity doped layer are inserted into an optical wave guide layer so as to cancel an internal electric field in an active region.
    Type: Grant
    Filed: December 18, 1985
    Date of Patent: October 20, 1987
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Paul W. A. McIlroy, Atsushi Kurobe, Hideto Furuyama