Patents by Inventor Myung Chul Cha

Myung Chul Cha 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).

  • Lagoon for hog waste and the method of treatment thereof
    Patent number: 6764600
    Abstract: The present invention relates to a lagoon partitioned for hog waste treatment, and the method of waste treatment in said lagoon. More particularly, the present invention relates to a lagoon for hog waste, which is partitioned into zones separated by walls, comprising a first zone for storing and settling hog waste, a second zone for carrying out sequence batch reaction onto the supernatant from the first zone, a third zone for storing processed liquid materials from the second zone, and a fourth zone for fermenting the solid materials from the first and second zones, wherein a passageway with a pump is installed between the respective two zones for transference of solid and liquid waste materials.
    Type: Grant
    Filed: July 18, 2002
    Date of Patent: July 20, 2004
    Assignee: Environmental Vision 21, Ltd.
    Inventors: Myung Chul Cha, Jihyun Choi
  • Lagoon for hog waste and the method of treatment thereof
    Publication number: 20040011734
    Abstract: The present invention relates to a lagoon partitioned for hog waste treatment, and the method of waste treatment in said lagoon. More particularly, the present invention relates to a lagoon for hog waste, which is partitioned into zones separated by walls, comprising a first zone for storing and settling hog waste, a second zone for carrying out sequence batch reaction onto the supernatant from the first zone, a third zone for storing processed liquid materials from the second zone, and a fourth zone for fermenting the solid materials from the first and second zones, wherein a passageway with a pump is installed between the respective two zones for transference of solid and liquid waste materials.
    Type: Application
    Filed: July 18, 2002
    Publication date: January 22, 2004
    Inventors: Myung Chul Cha, Jihyun Choi