Patents by Inventor Dong Kyoo Choi

Dong Kyoo Choi 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).

  • Refrigerator having degree control means and control method thereof
    Patent number: 5845503
    Abstract: A refrigerator having an opening degree control means and a control method thereof which have an opening degree control means for controlling a refrigerant flow provided into each evaporator, and thus enhance an energy efficiency, in a refrigerator which independently cools or maintains the freezing and refrigerating compartments at different temperatures by including an evaporator in each of the freezing and refrigerating compartments.
    Type: Grant
    Filed: July 28, 1997
    Date of Patent: December 8, 1998
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Dong-Kyoo Choi
  • Heat pump with moveable partition valve
    Patent number: 5732566
    Abstract: A heat pump heating and cooling system includes a compressor, indoor and outdoor heat exchangers, and two expansion devices. Interposed between the expansion devices is a cut-off device which permits refrigerant to flow between the indoor and outdoor heat exchanges while the compressor is operating, and blocks such flow while the compressor is idle, thereby isolating high and low pressure fluids from one another while the compressor is idle.
    Type: Grant
    Filed: October 23, 1996
    Date of Patent: March 31, 1998
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Dong Kyoo Choi