Patents by Inventor Alex Alexander

Alex Alexander 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).

  • Ultrapure mineralizers and methods for nitride crystal growth
    Patent number: 9299555
    Abstract: An ultrapure mineralizer is formed by vaporization, condensation, and delivery of a condensable mineralizer composition. The mineralizer has an oxygen content below 100 parts per million. The ultrapure mineralizer is useful as a raw material for ammonothermal growth of bulk group III metal nitride crystals.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: March 29, 2016
    Assignee: Soraa, Inc.
    Inventors: Alex Alexander, John W. Nink, Jr., Mark P. D'Evelyn
  • Method of making bulk InGaN substrates and devices thereon
    Patent number: 8729559
    Abstract: A relaxed epitaxial AlxInyGa(1-x-y)N layer on a substrate having a semipolar surface orientation includes a plurality of misfit dislocations in portions of the thickness of the epitaxial layer to reduce bi-axial strain to a relaxed state.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: May 20, 2014
    Assignee: Soraa, Inc.
    Inventors: Mike Krames, Mark D'Evelyn, Rajeev Pakalapati, Alex Alexander, Derrick Kamber
  • Method of Making Bulk InGaN Substrates and Devices Thereon
    Publication number: 20120091465
    Abstract: A relaxed epitaxial AlxInyGa(1-x-y)N layer on a substrate having a semipolar surface orientation includes a plurality of misfit dislocations in portions of the thickness of the epitaxial layer to reduce bi-axial strain to a relaxed state.
    Type: Application
    Filed: October 13, 2011
    Publication date: April 19, 2012
    Applicant: Soraa, Inc.
    Inventors: Mike Krames, Mark D'Evelyn, Rajeev Pakalapati, Alex Alexander, Derrick Kamber
  • Clock
    Patent number: D421915
    Type: Grant
    Filed: July 23, 1999
    Date of Patent: March 28, 2000
    Inventor: Alex Alexander, II