Patents by Inventor Jong Su Ha

Jong Su Ha 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).

  • PREMIXER AND COMBUSTION APPARATUS INCLUDING THE SAME
    Publication number: 20260338374
    Abstract: A premixer according to the present invention includes: a premixing unit in which a fuel and an air are mixed inside; and a fuel switching unit connected to the premixing unit and configured to vary a cross-sectional area of a fuel supply nozzle connected to an inside of the premixing unit according to a type of the fuel supplied to the premixing unit.
    Type: Application
    Filed: April 28, 2026
    Publication date: October 29, 2026
    Applicant: KITURAMI Co., Ltd.
    Inventors: Young Hwan CHOI, Kihwan NAM, Sung Chul CHO, Hee Wook KIM, Jong Su HA
  • Apparatus for hydraulically splitting up rock
    Patent number: 5676427
    Abstract: An apparatus for hydraulically splitting up rock includes a hydraulically operated piston-cylinder assembly as an oil delivering and controlling part. A split pair of thrust members accommodates an elastic rubber tube, a pair of expanding inserts and a pair of holding bushings. This apparatus may be applied in construction, tunnel mining, quarry mining, demolition of reinforced concrete foundations and so on.
    Type: Grant
    Filed: September 7, 1995
    Date of Patent: October 14, 1997
    Inventor: Jong Su Ha