Patents by Inventor Youngik Choi

Youngik 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).

  • Submerged ammonia removal system and method
    Patent number: 7008539
    Abstract: A system and method for reducing the content of ammonia in water provides a submerged surface having a growth of nitrifying bacteria thereon. An aeration system creates air bubbles that travel along the surface as they rise to create aerobic conditions on the surface, and to circulate the water along the surface to allow the nitrifying bacteria to remove ammonia from the water.
    Type: Grant
    Filed: May 13, 2004
    Date of Patent: March 7, 2006
    Assignee: University of Utah Research Foundation
    Inventors: Kraig Johnson, Lawrence D. Reaveley, Youngik Choi
  • Submerged ammonia removal system and method
    Publication number: 20040245173
    Abstract: A system and method for reducing the content of ammonia in water provides a submerged surface having a growth of nitrifying bacteria thereon. An aeration system creates air bubbles that travel along the surface as they rise to create aerobic conditions on the surface, and to circulate the water along the surface to allow the nitrifying bacteria to remove ammonia from the water.
    Type: Application
    Filed: May 13, 2004
    Publication date: December 9, 2004
    Applicants: University of Utah, Utah Research Foundation
    Inventors: Kraig Johnson, Lawrence D. Reaveley, Youngik Choi