Patents by Inventor Kwang-Hee Ku

Kwang-Hee Ku 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 manufacturing retainer ring of chemical mechanical polishing device
    Patent number: 9005499
    Abstract: Disclosed herein is a method of manufacturing a retainer ring for a chemical mechanical polishing device. Insert pins are coupled to an insert ring member. The insert ring member is thereafter disposed in a mold such that a space is defined around the insert ring member in the mold. Subsequently, molten shell material is injected into the mold to form a shell member. Thereby, the retainer ring is manufactured, having a structure such that the insert ring member is completely covered with the shell member.
    Type: Grant
    Filed: February 22, 2011
    Date of Patent: April 14, 2015
    Assignee: Will Be S & T Co., Ltd.
    Inventors: Han-Ju Lee, Min-Gyu Kim, Kwang-Hee Ku, Jae-Bok Lee
  • METHOD FOR MANUFACTURING RETAINER RING OF CHEMICAL MECHANICAL POLISHING DEVICE
    Publication number: 20120319321
    Abstract: Disclosed herein is a method of manufacturing a retainer ring for a chemical mechanical polishing device. Insert pins are coupled to an insert ring member. The insert ring member is thereafter disposed in a mold such that a space is defined around the insert ring member in the mold. Subsequently, molten shell material is injected into the mold to form a shell member. Thereby, the retainer ring is manufactured, having a structure such that the insert ring member is completely covered with the shell member.
    Type: Application
    Filed: February 22, 2011
    Publication date: December 20, 2012
    Applicant: Will Be S & T Co., Ltd.
    Inventors: Han-Ju Lee, Min-Gyu Kim, Kwang-Hee Ku, Jae-Bok Lee