Patents by Inventor Chul-Hee Ryu

Chul-Hee Ryu 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).

  • On-site treatment method of food waste generated from collective residence or institutional food service facilities
    Patent number: 7108788
    Abstract: Disclosed is an on-site treatment method of food waste generated from multi-unit dwellings and institutional food service facilities, by transporting wastewater-containing food waste to a separation chamber by use of domestic wastewater or an additional transporter; separating the transported food waste to wastewater and food waste; and treating the separated wastewater in a sewage disposal plant, and the separated food waste using disposal equipment. Such food waste can be treated even using disposal equipment of small capacities, due to separation of wastewater and food waste, compared to disposal equipment of large capacities required for treating wastewater and food waste together. Also, the quality of the separated wastewater is better than the conventional quality of wastewater, and thus loads of the sewage disposal plant can be efficiently decreased.
    Type: Grant
    Filed: August 29, 2002
    Date of Patent: September 19, 2006
    Assignees: E1 Biotech Co., Ltd., Korean Advanced Institute of Science and Technology
    Inventors: Ho Nam Chang, Do-Yun Kim, Moon-II Kim, Chul-Hee Ryu, Woo-Gi Lee
  • On-site treatment method of food waste generated from collective residence or institutional food service facilities
    Publication number: 20040206698
    Abstract: Disclosed is an on-site treatment method of food waste generated from multi-unit dwellings and institutional food service facilities, by transporting wastewater-containing food waste to a separation chamber by use of domestic wastewater or an additional transporter; separating the transported food waste to wastewater and food waste; and treating the separated wastewater in a sewage disposal plant, and the separated food waste using disposal equipment. Such food waste can be treated even using disposal equipment of small capacities, due to separation of wastewater and food waste, compared to disposal equipment of large capacities required for treating wastewater and food waste together. Also, the quality of the separated wastewater is better than the conventional quality of wastewater, and thus loads of the sewage disposal plant can be efficiently decreased.
    Type: Application
    Filed: February 20, 2004
    Publication date: October 21, 2004
    Inventors: Ho Nam Chang, Do Yun Kim, Moon-Il Kim, Chul-Hee Ryu, Woo-Gi Lee