Patents by Inventor Duk-Jun Kwon

Duk-Jun Kwon 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).

  • Azeotropic distillation process for separating acetic acid, methylacetate and water in the production of an aromatic carboxylic acid
    Patent number: 7468456
    Abstract: An improved process for producing an aromatic carboxylic acid from an aromatic alkyl hydrocarbon is described, wherein the improvement comprises using the same aromatic alkyl hydrocarbon as the azeotropic agent for separation of acetic acid and methyl acetate from water via azeotropic distillation. The process of this invention has considerable advantages over other known processes, particularly in regards to consumption of the azeotropic agent and utilities, formation of undesirable impurities and operating costs.
    Type: Grant
    Filed: July 11, 2006
    Date of Patent: December 23, 2008
    Assignee: ANT Corporation
    Inventors: Myron Myonkee Lee, Duk-Jun Kwon, Dong-Won Lee, Alexander Jongwon Lee
  • Azeotropic distillation process for separating acetic acid, methylacetate and water in the production of an aromatic carboxylic acid
    Publication number: 20070027340
    Abstract: An improved process for producing an aromatic carboxylic acid from an aromatic alkyl hydrocarbon is described, wherein the improvement comprises using the same aromatic alkyl hydrocarbon as the azeotropic agent for separation of acetic acid and methyl acetate from water via azeotropic distillation. The process of this invention has considerable advantages over other known processes, particularly in regards to consumption of the azeotropic agent and utilities, formation of undesirable impurities and operating costs.
    Type: Application
    Filed: July 11, 2006
    Publication date: February 1, 2007
    Inventors: Myron Lee, Duk-Jun Kwon, Dong-Won Lee, Alexander Lee