Patents by Inventor Han C. Chang

Han C. Chang 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).

  • Methods for forming high purity components and components formed thereby
    Patent number: 6881262
    Abstract: A method of forming a component is disclosed. The method includes: providing a core containing a porous material; infiltrating the core with silicon carbide; and removing the porous material of the core, thereby forming a porous substrate containing silicon carbide.
    Type: Grant
    Filed: December 23, 2002
    Date of Patent: April 19, 2005
    Assignee: Saint-Gobain Ceramics & Plastics, Inc.
    Inventors: Andrew G. Haerle, Han C. Chang
  • Wafer carrier having improved processing characteristics
    Publication number: 20040188319
    Abstract: A wafer carrier for supporting a plurality of wafers, including a plurality of slots provided in a cradle, the cradle being formed of silicon carbide and having an oxide layer overlying the silicon carbide.
    Type: Application
    Filed: March 28, 2003
    Publication date: September 30, 2004
    Applicant: Saint-Gobain Ceramics & Plastics, Inc.
    Inventors: Richard F. Buckley, Andrew G. Haerle, Han C. Chang