Patents by Inventor Ikuya Seo

Ikuya Seo 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).

  • Method for producing 1,2-dichloroethane
    Patent number: 5905177
    Abstract: In a method for producing 1,2-dichloroethane by an oxychlorination reaction of ethylene, hydrogen chloride and oxygen, a continuous method for producing 1,2-dichloroethane, which comprises cooling a gas discharged from an oxychlorination reactor to condense and separate 1,2-dichloroethane and water therefrom, further removing hydrogen chloride and carbon dioxide therefrom, then mixing oxygen and nitrogen thereto so that the oxygen concentration becomes from 20 to 30 vol % and the ethylene concentration becomes from 1 to 3 vol % and supplying the gas mixture thus adjusted to an oxychlorination reactor.
    Type: Grant
    Filed: March 15, 1996
    Date of Patent: May 18, 1999
    Assignee: Toshoh Corporation
    Inventors: Ikuya Seo, Terumasa Yoshida