Patents by Inventor Hyoung-Jae Seo

Hyoung-Jae 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 preparing high purity isobutene using glycolether
    Patent number: 9637422
    Abstract: Disclosed is a method of preparing isobutene in which high-purity isobutene is separated (prepared) from a C4 mixture by cracking glycol ether prepared from a C4 mixture (in particular, C4 raffinate-1) containing isobutene and a glycol. The method includes cracking glycol ether into isobutene and glycol at a temperature between 50° C. and 300° C. in the presence of a strongly acidic catalyst. The glycol ether may be prepared by reaction between a C4 mixture containing isobutene and glycol in the presence of an acid catalyst.
    Type: Grant
    Filed: February 17, 2012
    Date of Patent: May 2, 2017
    Assignee: DAELIM INDUSTRIAL CO., LTD.
    Inventors: Myeong-Seok Kim, Jae-Hoon Uhm, Min-Sup Park, Hyoung-Jae Seo, Kyoung-Tae Min
  • Method for preparing a glycol mono-tertiary-butylether compound
    Patent number: 8766015
    Abstract: Disclosed is a method of preparing a glycol mono-tertiary-butyl ether compound using a C4 hydrocarbon mixture containing isobutene and a glycol compound as reactants, in which a glycol di-tertiary-butyl ether compound as a byproduct is decomposed into isobutene and a glycol compound and the obtained isobutene and glycol compound are recycled as reactants, whereby product yield per unit raw material may be maximized.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: July 1, 2014
    Assignee: Daelim Industrial Co., Ltd.
    Inventors: Myeong-Seok Kim, Jae-Hoon Uhm, Min-Sup Park, Hyoung-Jae Seo, Kyoung-Tae Min
  • METHOD FOR PREPARING A GLYCOL MONO-TERTIARY-BUTYLETHER COMPOUND
    Publication number: 20130331613
    Abstract: Disclosed is a method of preparing a glycol mono-tertiary-butyl ether compound using a C4 hydrocarbon mixture containing isobutene and a glycol compound as reactants, in which a glycol di-tertiary-butyl ether compound as a byproduct is decomposed into isobutene and a glycol compound and the obtained isobutene and glycol compound are recycled as reactants, whereby product yield per unit raw material may be maximized.
    Type: Application
    Filed: February 21, 2012
    Publication date: December 12, 2013
    Applicant: DAELIM INDUSTRIAL CO., LTD.
    Inventors: Myeong-Seok Kim, Jae-Hoon Uhm, Min-Sup Park, Hyoung-Jae Seo, Kyoung-Tae Min
  • METHOD FOR PREPARING HIGH PURITY ISOBUTENE USING GLYCOLETHER
    Publication number: 20130324781
    Abstract: Disclosed is a method of preparing isobutene in which high-purity isobutene is separated (prepared) from a C4 mixture by cracking glycol ether prepared from a C4 mixture (in particular, C4 raffinate-1) containing isobutene and a glycol. The method includes cracking glycol ether into isobutene and glycol at a temperature between 50° C. and 300° C. in the presence of a strongly acidic catalyst. The glycol ether may be prepared by reaction between a C4 mixture containing isobutene and glycol in the presence of an acid catalyst.
    Type: Application
    Filed: February 17, 2012
    Publication date: December 5, 2013
    Applicant: DAELIM INDUSTRIAL CO., LTD.
    Inventors: Myeong-Seok Kim, Jae-Hoon Uhm, Min-Sup Park, Hyoung-Jae Seo, Kyoung-Tae Min