Patents by Inventor Dong-Gak Choi

Dong-Gak 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).

  • Patent number: 7240865
    Abstract: An apparatus for food waste treatment which efficiently treats sewage and odor generated from food wastes. The food waste treatment apparatus includes a body (10), a hopper (30) to put the food wastes into the body (10), a crusher (14) installed in the body (10) to crush the food wastes, an agitating container (42) having an agitator (38) therein and provided at a lower portion in the body (10) to agitate the food wastes, a sewage purifying tank (70) provided under the crusher (14) in the body (10) so as to purify sewage generated from the food wastes during a crushing operation of the crusher (14), and a drain pipe (73) extending from the sewage purifying tank (70), with a magnetic material (74) mounted on an end of the drain pipe (73) to secondarily purify the sewage drained from the sewage purifying tank (70) into a sewer pipe.
    Type: Grant
    Filed: December 2, 2003
    Date of Patent: July 10, 2007
    Inventor: Dong-Gak Choi
  • Publication number: 20060037898
    Abstract: An apparatus for food waste treatment which efficiently treats sewage and odor generated from food wastes. The food waste treatment apparatus includes a body (10), a hopper (30) to put the food wastes into the body (10), a crusher (14) installed in the body (10) to crush the food wastes, an agitating container (42) having an agitator (38) therein and provided at a lower portion in the body (10) to agitate the food wastes, a sewage purifying tank (70) provided under the crusher (14) in the body (10) so as to purify sewage generated from the food wastes during a crushing operation of the crusher (14), and a drain pipe (73) extending from the sewage purifying tank (70), with a magnetic material (74) mounted on an end of the drain pipe (73) to secondarily purify the sewage drained from the sewage purifying tank (70) into a sewer pipe.
    Type: Application
    Filed: December 2, 2003
    Publication date: February 23, 2006
    Inventor: Dong-Gak Choi