Patents by Inventor David Samuel Hoover

David Samuel Hoover 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).

  • Method for the growth of industrial crystals
    Patent number: 5753038
    Abstract: A method is disclosed for producing large single crystals. According to the initial steps of this method, a plurality of single crystal wafers are crystallographically oriented to form a seed plate which is patterned. The patterned seed plate is selectively etched to expose the bare surface of the seed plate. The exposed, patterned bare surface of the seed plate is etched to form a plurality of nucleation structures. Each of the nucleation structures protrude outwardly from the underlying surface of the seed plate and provide ideal structures for the growth of large, single crystals. The resulting large, single crystals can be separated from the seed crystals by etching, physical or chemical means.
    Type: Grant
    Filed: March 21, 1997
    Date of Patent: May 19, 1998
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Miroslav Vichr, David Samuel Hoover