Patents by Inventor Ha Y. Chang

Ha Y. Chang 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).

  • Apparatus for purifying pollutant gases
    Patent number: 5067974
    Abstract: Method of purifying the pollutant gas in which a vortex is formed by spurting the purifying solution into the cylindrical tank and the pollutant gas is blast off in the same direction as the vortex so that the purified gas rising upward through the purifying solution to be discharged, and the pollutant gas purifying apparatus including the annular gas feed tube with the cylindrical water tank longitudinally installed along the inner circumferential surface of the annular gas feed tube and connecting tubes while water tubes are longitudinally installed inside the cylindrical tank and nozzles are vertically arranged in one direction, with water tubes connected to the pump.
    Type: Grant
    Filed: March 29, 1991
    Date of Patent: November 26, 1991
    Assignee: Hydundae Enviroment Energy Mgmt. Corp., Ltd.
    Inventor: Ha Y. Chang
  • Method or purifying pollutant gases and apparatus thereof
    Patent number: 5022896
    Abstract: Method of purifying the pollutant gas in which a vortex is formed by spurting the purifying solution into the cylindrical tank and the pollutant gas is blast off in the same direction as the vortex so that the purified gas rising upward through the purifying solution to be discharged, and the pollutant gas purifying apparatus including the annular gas fee tube with the cylindrical water tank longitudinally installed along the inner circumferential surface of the annular gas feed tube and connecting tubes while water tubes are longitudinally installed inside the cylindrical tank and nozzles are vertically arranged in one direction, with water tubes connected to the pump.
    Type: Grant
    Filed: November 3, 1989
    Date of Patent: June 11, 1991
    Assignee: Hyundae Environment Energy Management Corp. Ltd.
    Inventor: Ha Y. Chang