Patents by Inventor Chang Shik Lim

Chang Shik Lim 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).

  • Electronic toilet and flushing system
    Patent number: 7225478
    Abstract: A functional electronic toilet and flushing system capable of controlling the amount of flushing water according to the sensed occupancy time compared with predefined normal time durations for urination and bowel movement, in order to use an optimum amount of flushing water and to protect an occupant by detecting the sitting attitude or position.
    Type: Grant
    Filed: August 22, 2003
    Date of Patent: June 5, 2007
    Inventors: Chang Shik Lim, Hee-Seok Chang
  • Electronic toilet and flushing system
    Publication number: 20050283891
    Abstract: A functional electronic toilet and flushing system capable of controlling the amount of flushing water according to the sensed occupancy time compared with predefined normal time durations for urination and bowel movement, in order to use an optimum amount of flushing water and to protect an occupant by detecting the sitting attitude or position.
    Type: Application
    Filed: August 22, 2003
    Publication date: December 29, 2005
    Inventor: Chang-Shik Lim