Patents by Inventor Chul Woen Yun

Chul Woen Yun 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).

  • Surface treatment method for coated cutting insert
    Patent number: 8057854
    Abstract: A surface treatment method can perform coated surface treatment on a cutting edge R and a rake surface, while maintaining a radius of curvature of the cutting edge R and uniformly surface-treating the rake surface. The surface treatment method includes providing an opening chamfered at corners adjacent to an upper surface of the fixture to the fixture for fixing a coated cutting insert; fixing the coated cutting insert inside the opening in such a manner that a rake surface of the coated cutting insert is disposed lower than upper surfaces of the fixture but higher than a lower edge created on the opening of the fixture by the chamfering; and conducting the surface treatment on a cutting edge R and the rake surface of the coated cutting insert.
    Type: Grant
    Filed: November 30, 2006
    Date of Patent: November 15, 2011
    Assignee: Taegutec, Ltd.
    Inventors: Dong Gil Ahn, Chul Woen Yun, Seung Hwan Lee
  • Surface Treatment Method for Coated Cutting Insert
    Publication number: 20100048103
    Abstract: A surface treatment method can perform coated surface treatment on a cutting edge R and a rake surface, while maintaining a radius of curvature of the cutting edge R and uniformly surface-treating the rake surface. The surface treatment method includes providing an opening chamfered at comers adjacent to an upper surface of the fixture to the fixture for fixing a coated cutting insert; fixing the coated cutting insert inside the opening in such a manner that a rake surface of the coated cutting insert is disposed lower than upper surfaces of the fixture but higher than a lower edge created on the opening of the fixture by the chamfering; and conducting the surface treatment on a cutting edge R and the rake surface of the coated cutting insert.
    Type: Application
    Filed: November 30, 2006
    Publication date: February 25, 2010
    Applicant: Taegu Tec Ltd.
    Inventors: Dong Gil Ahn, Chul Woen Yun, Seung Hwan Lee