Patents by Inventor Song Yun Cho

Song Yun Cho 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: 20200199261
    Abstract: Provided is an oxime ester phenylcarbazole compound useful as a photoinitiator for photocrosslinking. Specifically, the carbon atom forming a double bond with the nitrogen atom in the oxime ester moiety of the oxime ester phenylcarbazole compound is bonded to the phenylcarbazole group and is directly bonded to a (C1-C20)alkyl or (C6-C20)aryl group. Also provided is a photopolymerizable composition including the oxime ester phenylcarbazole compound. The oxime ester phenylcarbazole compound and the photopolymerizable composition have improved solubilities, are highly photosensitive, and exhibit excellent physical properties in terms of residual film ratio, pattern stability, resist adhesiveness. Due to these advantages, the oxime ester phenylcarbazole compound and the photopolymerizable composition are suitable for use in black resists, color resists, overcoats, column spacers, and organic insulating films of LCDs.
    Type: Application
    Filed: July 5, 2017
    Publication date: June 25, 2020
    Applicants: Korea Research Institute of Chemical Technology, TAKOMA TECHNOLOGY CO., LTD.
    Inventors: Chang Jin LEE, Jae Min LEE, Shahid AMEEN, Song Yun CHO, Sung Cheol YOON, Young Cheul LEE, Mi Sun RYU, Bok Joo SONG, Keun Soo KIM, So Youn NAM
  • Patent number: 9969896
    Abstract: The aim of the present invention is to provide an indium-zinc-oxide semiconductor ink composition in which a spontaneous combustion reaction occurs, and provide an inorganic semiconductor thin film produced thereby. To this end, the present invention provides a semiconductor ink composition which includes a complex, represented by formula 1, incorporating a nitrate of a metal A which is an oxidizing material and incorporating a metal B which is a fuel material; wherein the metal A and the metal B are each respectively a metal selected from the group consisting of indium, gallium, zinc, titanium, aluminum, lithium, and zirconium, and metal A and metal B are different from each other.
    Type: Grant
    Filed: June 11, 2015
    Date of Patent: May 15, 2018
    Assignee: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
    Inventors: Song yun Cho, Chang Jin Lee, Young Hun Kang
  • Publication number: 20150275017
    Abstract: The aim of the present invention is to provide an indium-zinc-oxide semiconductor ink composition in which a spontaneous combustion reaction occurs, and provide an inorganic semiconductor thin film produced thereby. To this end, the present invention provides a semiconductor ink composition which comprises a complex, represented by formula 1, incorporating a nitrate of a metal A which is an oxidising material and incorporating a metal B which is a fuel material; wherein the metal A and the metal B are each respectively a metal selected from the group consisting of indium, gallium, zinc, titanium, aluminum, lithium, and zirconium, and metal A and metal B are different from each other.
    Type: Application
    Filed: June 11, 2015
    Publication date: October 1, 2015
    Inventors: Song yun CHO, Chang Jin LEE, Young Hun KANG
  • Patent number: 6846934
    Abstract: Novel photochromic diarylethenes substituted with an isoxazole group and the method of preparation are disclosed. Also disclosed are compositions made with the photochromic diarylethenes. The preparation of thin films with the photochromic diarylethenes or compositions thereof are disclosed. The photochromic diarylethenes or compositions thereof may be used, for example in recording materials, photochromic windows, indicating elements, plastic mirrors, photochromic filters, photo switches, photosensitive drums, recording elements, solar cells, lens, fibers and optical elements.
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: January 25, 2005
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Eun Kyoung Kim, Song Yun Cho, Dong Ju Jeon, Young Mi Kim
  • Patent number: 6787621
    Abstract: Vinyl group-containing diarylethene monomers and photochromic polymers made there from. The diarylethene monomers may be suitable for controlled polyermerization. Polymers formed from the diarylethene monomers may have optical properties such as, for example, optical signal control properties, photochromic properties, and/or optical reflectivity properties.
    Type: Grant
    Filed: September 19, 2002
    Date of Patent: September 7, 2004
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Eunkyoung Kim, Song Yun Cho, Min Ja Yoo, Kwang-Hyun Ahn
  • Publication number: 20040006188
    Abstract: A polymerizable composition comprising a novel carbonate group-containing acrylate derivative of formula (I) of the present invention is used to prepare a polymer film or molded product having improved compatibility with dyes, high adhesivity to a substrate, low optical loss and low birefringence: 1
    Type: Application
    Filed: June 11, 2003
    Publication date: January 8, 2004
    Inventors: Eunkyoung Kim, Song Yun Cho
  • Publication number: 20030130456
    Abstract: Vinyl group-containing diarylethene monomers and photochromic polymers made there from. The diarylethene monomers may be suitable for controlled polyermerization. Polymers formed from the diarylethene monomers may have optical properties such as, for example, optical signal control properties, photochromic properties, and/or optical reflectivity properties.
    Type: Application
    Filed: September 19, 2002
    Publication date: July 10, 2003
    Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
    Inventors: Eun Kyoung Kim, Song Yun Cho, Min Ja Yoo, Kwang-Hyun Ahn