Patents by Inventor Sung-Hee Ahn

Sung-Hee Ahn 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 of transferring graphene
    Patent number: 9039886
    Abstract: A method of transferring graphene includes depositing graphene on a side of at least one metal substrate to provide a metal substrate-graphene layer, stacking a target substrate on a side of the metal substrate-graphene layer to provide a stacked structure in which a side of the target substrate faces the graphene layer, and exposing the stacked structure to an electrolysis bath to remove the metal substrate and transfer the graphene onto the side of the target substrate.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: May 26, 2015
    Assignee: CHEIL INDUSTRIES, INC.
    Inventors: Kuanping Gong, Lijie Ci, Sung-Hee Ahn, Jin-Seong Park, Byeong-Yeol Kim
  • METHOD OF TRANSFERRING GRAPHENE
    Publication number: 20130220530
    Abstract: A method of transferring graphene includes depositing graphene on a side of at least one metal substrate to provide a metal substrate-graphene layer, stacking a target substrate on a side of the metal substrate-graphene layer to provide a stacked structure in which a side of the target substrate faces the graphene layer, and exposing the stacked structure to an electrolysis bath to remove the metal substrate and transfer the graphene onto the side of the target substrate.
    Type: Application
    Filed: October 24, 2012
    Publication date: August 29, 2013
    Inventors: Kuanping GONG, Lijie CI, Sung-Hee AHN, Jin-Seong PARK, Byeong-Yeol KIM
  • Flame retardant thermoplastic resin composition containing styrene polymer as compatabilizer and oxaphospholane compound as flame retardant
    Patent number: 6838497
    Abstract: The present invention relates to a flame retardant thermoplastic resin composition that comprises (A) about 40 to 95 parts by weight of a rubber modified styrene-containing resin, (B) about 5 to 60 parts by weight of polyphenylene ether resin, (C) about 2 to 30 parts by weight of a styrene-containing copolymer resin having about 5 to 18 % by weight of acrylonitrile in the copolymer per 100 parts by weight of the sum of (A) and (B), (D) about 0.5 to 20 parts by weight of an oxaphospholane compound per 100 parts by weight of the sum of (A) and (B), and (E) about 0 to 30 parts by weight of a phosphoric acid ester compound per 100 parts by weight of the sum of (A) and (B).
    Type: Grant
    Filed: August 29, 2002
    Date of Patent: January 4, 2005
    Assignee: Cheil Industries Inc.
    Inventors: Sang-Hyun Hong, Bok-Nam Jang, Young-Kil Chang, Sung-Hee Ahn, Jae-Ho Yang
  • Flame retardant thermoplastic resin composition containing styrene polymer as compatabilizer and oxaphospholane compound as flame retardant
    Publication number: 20030130385
    Abstract: The present invention relates to a flame retardant thermoplastic resin composition that comprises (A) about 40 to 95 parts by weight of a rubber modified styrene-containing resin, (B) about 5 to 60 parts by weight of polyphenylene ether resin, (C) about 2 to 30 parts by weight of a styrene-containing copolymer resin having about 5 to 18 % by weight of acrylonitrile in the copolymer per 100 parts by weight of the sum of (A) and (B), (D) about 0.5 to 20 parts by weight of an oxaphospholane compound per 100 parts by weight of the sum of (A) and (B), and (E) about 0 to 30 parts by weight of a phosphoric acid ester compound per 100 parts by weight of the sum of (A) and (B).
    Type: Application
    Filed: August 29, 2002
    Publication date: July 10, 2003
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Sang-Hyun Hong, Bok-Nam Jang, Young-Kil Chang, Sung-Hee Ahn, Jae-Ho Yang