Patents by Inventor Chang-Jung Li

Chang-Jung Li 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).

  • Composite shadow ring assembled with dowel pins and method of using
    Patent number: 7396432
    Abstract: A composite shadow ring that is constructed of an upper ring and a lower ring assembled together by a plurality of dowel pins and a method for using the ring. The upper ring and the lower ring each has a predetermined outside diameter that is substantially the same, a planar top surface and a planer bottom surface parallel to the planar top surface. Each of the planar bottom surface of the upper ring and the planar top surface of the lower ring has at least two blind holes formed therein. A plurality of dowel pins are used to frictionally engage the at least two blind holes in the upper ring and the at least two blind holes in the lower ring.
    Type: Grant
    Filed: June 7, 2002
    Date of Patent: July 8, 2008
    Assignee: Taiwan Semiconductor Mfg. Co., Ltd
    Inventors: Chang-Jung Li, Wen-Ming Chen, Kun-Yen Fan, Wen-Chi Wang
  • Composite shadow ring assembled with dowel pins and method of using
    Publication number: 20030226822
    Abstract: A composite shadow ring that is constructed of an upper ring and a lower ring assembled together by a plurality of dowel pins and a method for using the ring. The upper ring and the lower ring each has a predetermined outside diameter that is substantially the same, a planar top surface and a planer bottom surface parallel to the planar top surface. Each of the planar bottom surface of the upper ring and the planar top surface of the lower ring has at least two blind holes formed therein. A plurality of dowel pins are used to frictionally engage the at least two blind holes in the upper ring and the at least two blind holes in the lower ring.
    Type: Application
    Filed: June 7, 2002
    Publication date: December 11, 2003
    Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Chang-Jung Li, Wen-Ming Chen, Kun-Yen Fan, Wen-Chi Wang