Patents by Inventor Chang-Hwoi Joo

Chang-Hwoi Joo 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).

  • Indoor unit for air conditioner
    Patent number: 7275388
    Abstract: Indoor unit of air conditioner of the present invention includes air discharge units at left, right, and bottom of an outer case of the indoor unit oriented to blow air in forward outer sides, to prevent air blow to a suction side, thereby making air circulation smooth and fast air conditioning, and preventing infiltration of foreign matter in ordinary times to keep a tidy outer appearance because air suction, and the discharge units are only opened during operation of the air conditioner.
    Type: Grant
    Filed: December 6, 2001
    Date of Patent: October 2, 2007
    Assignee: LG Electronics Inc.
    Inventors: Chang-Hwoi Joo, Seong-Min Kang
  • Indoor unit for air conditioner
    Publication number: 20050097915
    Abstract: Indoor unit of air conditioner of the present invention includes air discharge units at left, right, and bottom of an outer case of the indoor unit oriented to blow air in forward outer sides, to prevent air blow to a suction side, thereby making air circulation smooth and fast air conditioning, and preventing infiltration of foreign matter in ordinary times to keep a tidy outer appearance because air suction, and the discharge units are only opened during operation of the air conditioner.
    Type: Application
    Filed: December 6, 2001
    Publication date: May 12, 2005
    Inventors: Chang-Hwoi Joo, Seong-Min Kang