Patents by Inventor Ki Jung CHO

Ki Jung CHO 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).

  • Self-healing alloy and method for manufacturing the same
    Patent number: 11913098
    Abstract: A self-healing alloy contains 5 to 11% by weight of molybdenum (Mo), iron (Fe) as a remainder, and unavoidable impurities. A method for manufacturing the self-healing alloy includes heat treating the alloy or preparing an alloy raw material powder and sintering, homogenizing, and cooling the alloy raw material powder.
    Type: Grant
    Filed: March 22, 2021
    Date of Patent: February 27, 2024
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION, Kookmin University Industry Academy Cooperation Foundation
    Inventors: Kyung Sik Choi, Hoo Dam Lee, Tae Gyu Lee, Byung Ho Min, Young Jun Kwon, Keun Won Lee, Yoon Jung Won, Ki Sub Cho
  • Injection molding apparatus for worm wheel
    Patent number: 10406737
    Abstract: Provided is an injection molding apparatus for a worm wheel, in which the worm wheel is not only integrally manufactured by an injection mold method, but a gear teeth structure of a gear forming unit is also manufactured as an injection mold without a hobbing operation, and the structure of the injection molding apparatus is also improved so that worm wheel products can be easily taken out from the injection mold. The injection molding apparatus includes: a boss injection mold; a product injection mold having a movable side core, a fixed side core, and a worm gear tooth-shaped core; and a take-out unit for taking out a worm wheel product formed with a worm gear by the product injection mold, wherein the take-out unit includes: a plurality of take-out pins; a take-out plate; and a guide unit guiding rotation of the worm gear tooth-shaped core.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: September 10, 2019
    Assignee: MTC CO., LTD.
    Inventors: Jung kwon Cho, Ki jung Cho, Kwang ryeal Choi, Won bum Sohn, Sung jae Yoo
  • INJECTION MOLDING APPARATUS FOR WORM WHEEL
    Publication number: 20180043594
    Abstract: Provided is an injection molding apparatus for a worm wheel, in which the worm wheel is not only integrally manufactured by an injection mold method, but a gear teeth structure of a gear forming unit is also manufactured as an injection mold without a hobbing operation, and the structure of the injection molding apparatus is also improved so that worm wheel products can be easily taken out from the injection mold. The injection molding apparatus includes: a boss injection mold; a product injection mold having a movable side core, a fixed side core, and a worm gear tooth-shaped core; and a take-out unit for taking out a worm wheel product formed with a worm gear by the product injection mold, wherein the take-out unit includes: a plurality of take-out pins; a take-out plate; and a guide unit guiding rotation of the worm gear tooth-shaped core.
    Type: Application
    Filed: March 11, 2016
    Publication date: February 15, 2018
    Applicant: MTC CO., LTD.
    Inventors: Jung kwon CHO, Ki Jung CHO, Kwang ryeal CHOI, Won bum SOHN, Sung Jae YOO