Patents by Inventor Doo-Hum Sun

Doo-Hum Sun 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).

  • Artificial knee joint capable of preventing dislocation of thighbone coupling member
    Patent number: 10307259
    Abstract: An artificial knee joint, which includes an upper surface at which a post performs a motion relative to a cam of the thighbone coupling member, is configured such that a radius of curvature of an upper curved surface extending posteriorly from the upper surface is larger than that of a lower curved surface, so as to prevent the cam of the thighbone coupling member from deviating from an inflection point existing between the upper curved surface and the lower curved surface, and is configured such that the upper surface is inclined at a predetermined angle, so as to allow the thighbone coupling member to be restored while naturally descending along the upper surface even when the thighbone coupling member is dislocated, thereby increasing a jump distance without increasing an amount of bone to be cut.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: June 4, 2019
    Assignee: Corentec Co., Ltd.
    Inventors: Oui-Sik Yoo, Jung-Woo Seo, Jae-Won Kim, Goon-Hee Lee, Doo-Hum Sun, Yong-Sik Kim
  • ARTIFICIAL KNEE JOINT CAPABLE OF PREVENTING DISLOCATION OF THIGHBONE COUPLING MEMBER
    Publication number: 20170333196
    Abstract: An artificial knee joint, which includes an upper surface at which a post performs a motion relative to a cam of the thighbone coupling member, is configured such that a radius of curvature of an upper curved surface extending posteriorly from the upper surface is larger than that of a lower curved surface, so as to prevent the cam of the thighbone coupling member from deviating from an inflection point existing between the upper curved surface and the lower curved surface, and is configured such that the upper surface is inclined at a predetermined angle, so as to allow the thighbone coupling member to be restored while naturally descending along the upper surface even when the thighbone coupling member is dislocated, thereby increasing a jump distance without increasing an amount of bone to be cut.
    Type: Application
    Filed: October 8, 2015
    Publication date: November 23, 2017
    Inventors: Oui-Sik Yoo, Jung-Woo Seo, Jae-Won Kim, Goon-Hee Lee, Doo-Hum Sun, Yong-Sik Kim