Patents by Inventor Joaquin E. Luna

Joaquin E. Luna 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 analyzing irregular shaped chunked silicon for contaminates
    Patent number: 5361128
    Abstract: The present invention is a method for analyzing irregular-shaped chunked silicon for low-level contaminates. The method comprises selecting a zonable-chunk of silicon and float-zoning the chunk of silicon to effect a distribution of surface contaminates into the bulk of a monocrystal of silicon. The float-zoned monocrystalline silicon is then processed into a wafer suitable for analysis for low-level contaminates.
    Type: Grant
    Filed: September 10, 1992
    Date of Patent: November 1, 1994
    Assignee: Hemlock Semiconductor Corporation
    Inventors: Michael Bourbina, Lydia L. Hwang, Joaquin E. Luna, Scott A. Wheelock