Patents by Inventor Dong Ju Moon

Dong Ju Moon 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).

  • Hydrogenation of aromatic diamines
    Patent number: 5981801
    Abstract: This invention relates to a method for preparing cycloaliphatic diamines by hydrogenating an aromatic diamines in the presence of a supported ruthenium catalyst. The catalyst is pre-treated with oxygen or air to increase the rate of the reaction and decrease the amount of higher boiler by-products.
    Type: Grant
    Filed: September 25, 1998
    Date of Patent: November 9, 1999
    Assignee: Korea Institute of Science and Technology
    Inventors: Hoon Sik Kim, Hyunjoo Lee, Sang Hyun Seo, Honggon Kim, Dong Ju Moon
  • Cerous chloride-chromic oxide catalyst for producing chlorine, methods for producing the same and a method for producing chlorine
    Patent number: 5716592
    Abstract: A process for producing chlorine by reaction of gaseous hydrogen chloride with oxygen in the presence of a catalyst prepared by reaction of chromium trioxide and cerous chloride with ethanol and calcination of the resulting reaction product, or, alternatively, prepared by reaction of chromium trioxide with ethanol, and calcination and impregnation of the resulting chromic oxide with aqueous solution of cerous chloride.
    Type: Grant
    Filed: September 9, 1996
    Date of Patent: February 10, 1998
    Assignee: Korea Institute Of Science and Technology
    Inventors: Byoung Sung Ahn, Dong Ju Moon, Kun You Park, Moon Jo Chung
  • Cerous chloride-chromic oxide catalyst for producing chlorine, methods for producing the same and a method for producing chlorine
    Patent number: 5663112
    Abstract: A novel cerous chloride-chromium oxide catalyst useful for oxidizing hydrogen chloride to chlorine. The catalyst is prepared by the reaction of chromium trioxide and cerous chloride with ethanol and calcining the reaction product. The catalyst is also prepared by the reaction of chromium trioxide with ethanol, then calcination and impregnation of the resultant chromic oxide with aqueous solution of cerous chloride. The obtained catalyst exhibits high activity at low reaction temperature.
    Type: Grant
    Filed: November 29, 1994
    Date of Patent: September 2, 1997
    Assignee: Korea Institute of Science and Technology
    Inventors: Byoung Sung Ahn, Dong Ju Moon, Kun You Park, Moon Jo Chung