Patents by Inventor Dong-Cheol Seo

Dong-Cheol 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).

  • Publication number: 20240180335
    Abstract: The present invention relates to an ottoman having a massaging apparatus. More specifically, the present invention relates to an ottoman having a massaging apparatus, the ottoman being usable as an ottoman enabling a part of the physical body of a user, sitting on a chair, to be conveniently put thereon at normal times, and being capable of conveniently massaging, if necessary, a part of the physical body of the user sitting on a chair.
    Type: Application
    Filed: March 25, 2022
    Publication date: June 6, 2024
    Inventors: Dong Myoung Lee, Sang Ho Choi, Jin Cheol Park, Yong Seob Seo
  • Patent number: 8779183
    Abstract: An acid generating agent used for chemically amplified resist compositions is provided, which agent is represented by the following formula (1): wherein X represents a monocyclic or polycyclic hydrocarbon group having 3 to 30 carbon atoms, and having at least one hydrogen atom on the ring substituted by an alkyl or alkoxy group which may be unsubstituted or substituted with a group selected from an ether group, an ester group, a carbonyl group, an acetal group, an epoxy group, a nitrile group and an aldehyde group, or by a perfluoroalkyl group, a hydroxyalkyl group, or a cyano group; R6 is an alkyl group, an alkoxy group, or a heteroatom selected from the group consisting of N, S and F; m is an integer from 0 to 2; and A+ is an organic counterion.
    Type: Grant
    Filed: June 19, 2008
    Date of Patent: July 15, 2014
    Assignee: Korea Kumho Petrochemical Co., Ltd.
    Inventors: Jung-Hoon Oh, Dong-Cheol Seo, Hyun-Sang Joo, Chang-Soo Lee
  • Patent number: 8026390
    Abstract: An acid generator represented by the following formula (1) is provided: wherein X represents an alkylene group having 1 to 10 carbon atoms, —X1—O—X2—, or a heteroatom selected from the group consisting of nitrogen, sulfur and fluorine; X1 and X2 each independently represent an alkylene group having 1 to 10 carbon atoms; Y represents a cyclic hydrocarbon group having 5 to 30 carbon atoms and containing one or more aromatic rings, while one or more hydrogen atoms on the ring of the cyclic hydrocarbon group may be substituted by one or more members selected from the group consisting of —O—Y1, —CO—Y2, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, a perfluoroalkyl group having 1 to 4 carbon atoms, a perfluoroalkoxy group having 1 to 4 carbon atoms, a hydroxyalkyl group having 1 to 6 carbon atoms, a halogen atom, a hydroxyl group and a cyano group; Y1 and Y2 each independently represent an alkyl group having 1 to 6 carbon atoms; n represents an integer of 0 or 5; and A+
    Type: Grant
    Filed: April 1, 2009
    Date of Patent: September 27, 2011
    Assignee: Korea Kumho Petrochenicals Co., Ltd.
    Inventors: Jung-Hoon Oh, Dong-Cheol Seo, Jin-Bong Shin
  • Publication number: 20100113818
    Abstract: An acid generator represented by the following formula (1) is provided: wherein X represents an alkylene group having 1 to 10 carbon atoms, —X1—O—X2—, or a heteroatom selected from the group consisting of nitrogen, sulfur and fluorine; X1 and X2 each independently represent an alkylene group having 1 to 10 carbon atoms; Y represents a cyclic hydrocarbon group having 5 to 30 carbon atoms and containing one or more aromatic rings, while one or more hydrogen atoms on the ring of the cyclic hydrocarbon group may be substituted by one or more members selected from the group consisting of —O—Y1, —CO—Y2, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, a perfluoroalkyl group having 1 to 4 carbon atoms, a perfluoroalkoxy group having 1 to 4 carbon atoms, a hydroxyalkyl group having 1 to 6 carbon atoms, a halogen atom, a hydroxyl group and a cyano group; Y1 and Y2 each independently represent an alkyl group having 1 to 6 carbon atoms; n represents an integer of 0 or 5; and A+
    Type: Application
    Filed: April 1, 2009
    Publication date: May 6, 2010
    Applicant: Korea Kumho Petrochemical Co., Ltd.
    Inventors: Jung-Hoon Oh, Dong-Cheol Seo, Jin-Bong Shin
  • Publication number: 20090234155
    Abstract: An acid generating agent used for chemically amplified resist compositions is provided, which agent is represented by the following formula (1): wherein X represents a monocyclic or polycyclic hydrocarbon group having 3 to 30 carbon atoms, and having at least one hydrogen atom on the ring substituted by an alkyl or alkoxy group which and may be unsubstituted or substituted with a group selected from an ether group, an ester group, a carbonyl group, an acetal group, an epoxy group, a nitrile group and an aldehyde group, or by a perfluoroalkyl group, a hydroxyalkyl group, or a cyano group; R6 is an alkyl group, an alkoxy group, or a heteroatom selected from the group consisting of N, S and F; m is an integer from 0 to 2; and A+ is an organic counterion.
    Type: Application
    Filed: June 19, 2008
    Publication date: September 17, 2009
    Applicant: Korea Kumho Petrochemical Co., Ltd.
    Inventors: Jung-Hoon Oh, Dong-Cheol Seo, Hyun-Sang Joo, Chang-Soo Lee