Patents by Inventor Ja Heon Koo

Ja Heon Koo 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).

  • CROP HARVESTING APPARATUS
    Publication number: 20240074351
    Abstract: A crop harvesting apparatus includes a pressure generator configured to generate a pressure, a driver configured to have a shape that changes in response to receiving the pressure from the pressure generator, and a cutter configured to cut an object to be cut in accordance with a change in the shape of the driver.
    Type: Application
    Filed: September 1, 2023
    Publication date: March 7, 2024
    Applicant: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Ja Choon KOO, Yeo Il YUN, Eun Jeong SONG, Moo Heon LEE, Seon Il LEE
  • NON-ADHESIVE ANTINOISE EARPLUG AND FABRICATION METHOD THEREOF
    Publication number: 20110240041
    Abstract: A method of fabricating an anti-noise earplug having an inner tip serving as a core and an outer tip coupled to the inner tip to surround the inner tip and inserted into an ear includes the steps of: (a) shaping the inner tip; (b) fixing the inner tip to an upper mold for shaping the outer tip; (c) disposing the upper mold to face a lower mold having a cavity for shaping the outer tip; (d) injecting a resin composition for forming the outer tip into the lower mold; (e) pressing down the upper mold to the lower mold; (f) curing the resin composition to couple the outer tip to the inner tip; and (g) separating the upper mold from the lower mold and then separating the earplug, in which the outer tip is coupled to the inner tip as a body, from the lower mold. In fabricating the earplug, the inner tip and the outer tip can be molded in an in-line process, thereby improving the fabrication efficiency.
    Type: Application
    Filed: June 16, 2011
    Publication date: October 6, 2011
    Inventor: Ja Heon Koo
  • Method of fabricating an antinoise earplug
    Patent number: 7998391
    Abstract: A method of fabricating an anti-noise earplug having an inner tip serving as a core and an outer tip coupled to the inner tip to surround the inner tip and inserted into an ear includes the steps of: (a) shaping the inner tip; (b) fixing the inner tip to an upper mold for shaping the outer tip; (c) disposing the upper mold to face a lower mold having a cavity for shaping the outer tip; (d) injecting a resin composition for forming the outer tip into the lower mold; (e) pressing down the upper mold to the lower mold; (f) curing the resin composition to couple the outer tip to the inner tip; and (g) separating the upper mold from the lower mold and then separating the earplug, in which the outer tip is coupled to the inner tip as a body, from the lower mold. In fabricating the earplug, the inner tip and the outer tip can be molded in an in-line process, thereby improving the fabrication efficiency.
    Type: Grant
    Filed: April 13, 2010
    Date of Patent: August 16, 2011
    Inventor: Ja Heon Koo