Patents by Inventor John Turn

John Turn 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).

  • Apparatus and method for making metal oxide sputtering targets
    Patent number: 6582641
    Abstract: An apparatus and process for making metal oxide sputtering targets from volatile and thermally unstable metal oxide powder by hot-pressing the metal oxide powder in a graphite die assembly having a ceramic barrier sleeve disposed therein to isolate the metal oxide powder from the graphite die assembly components.
    Type: Grant
    Filed: August 25, 1994
    Date of Patent: June 24, 2003
    Assignee: Praxair S.T. Technology, Inc.
    Inventors: Chi-Fung Lo, John Turn
  • Method for making metal oxide sputtering targets (barrier powder envelope)
    Patent number: 5656216
    Abstract: An apparatus and process for making metal oxide sputtering targets from volatile and thermally unstable metal oxide powder by enveloping the metal oxide powder in at least one layer of a barrier material while the powder is hot-pressed using a graphite die assembly.
    Type: Grant
    Filed: August 25, 1994
    Date of Patent: August 12, 1997
    Assignees: Sony Corporation, Materials Research Corporation
    Inventors: Chi-Fung Lo, John Turn, David P. Strauss