Patents by Inventor Youngchang YU

Youngchang YU 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).

  • Polydiacetylene water sensors
    Patent number: 10324072
    Abstract: Moisture sensing color change compositions are built of nanofibers of suitable small dimension based on diacetylene monomers that are polymerized in situ in a dried film containing a hygroscopic polymer that is bound to the nanofibers either directly or through crosslinkers.
    Type: Grant
    Filed: February 20, 2015
    Date of Patent: June 18, 2019
    Assignee: THE REGENTS OF THE UNIVERSITY OF MICHIGAN
    Inventors: Jinsang Kim, Sungbaek Seo, Youngchang Yu
  • Compound for organic light-emitting device, cross-linked material thereof, and organic light-emitting device including cross-linked material
    Patent number: 10056552
    Abstract: A compound for an organic light-emitting device represented by Formula 1: wherein, in Formula 1, A1 is selected from an aromatic group and an aromatic group having extended ?-conjugation, R1 is selected from hydrogen and a C1-C60 alkyl group, L1 and L2 are each independently selected from —O—, —S—, a C1-C20 alkylene group, a C1-C20 oxyalkylene group, and a C1-C20 thioalkylene group; and a C1-C20 alkylene group, a C1-C20 oxyalkylene group, and a C1-C20 thioalkylene group, each substituted with at least one selected from a C1-C20 alkyl group and a C1-C20 alkoxy group, n1 and n2 are each independently selected from 0, 1, 2, 3, 4, and 5, R2 and R3 are each independently selected from hydrogen and a first cross-linking group, provided that at least one of R2 and R3 is the first cross-linking group, and X is selected from —F, —Cl, —Br, and —I.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: August 21, 2018
    Assignees: SAMSUNG ELECTRONICS CO., LTD., THE REGENTS OF THE UNIVERSITY OF MICHIGAN
    Inventors: Changho Noh, Min Sang Kwon, Jinsang Kim, Youngchang Yu
  • COMPOUND FOR ORGANIC LIGHT-EMITTING DEVICE, CROSS-LINKED MATERIAL THEREOF, AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING CROSS-LINKED MATERIAL
    Publication number: 20170162789
    Abstract: A compound for an organic light-emitting device represented by Formula 1: wherein, in Formula 1, A1 is selected from an aromatic group and an aromatic group having extended ?-conjugation, R1 is selected from hydrogen and a C1-C60 alkyl group, L1 and L2 are each independently selected from —O—, —S—, a C1-C20 alkylene group, a C1-C20 oxyalkylene group, and a C1-C20 thioalkylene group; and a C1-C20 alkylene group, a C1-C20 oxyalkylene group, and a C1-C20 thioalkylene group, each substituted with at least one selected from a C1-C20 alkyl group and a C1-C20 alkoxy group, n1 and n2 are each independently selected from 0, 1, 2, 3, 4, and 5, R2 and R3 are each independently selected from hydrogen and a first cross-linking group, provided that at least one of R2 and R3 is the first cross-linking group, and X is selected from —F, —Cl, —Br, and —I.
    Type: Application
    Filed: June 8, 2016
    Publication date: June 8, 2017
    Inventors: Changho NOH, Min Sang KWON, Jinsang KIM, Youngchang YU
  • POLYDIACETYLENE WATER SENSORS
    Publication number: 20160349223
    Abstract: Moisture sensing color change compositions are built of nanofibers of suitable small dimension based on diacetylene monomers that are polymerized in situ in a dried film containing a hygroscopic polymer that is bound to the nanofibers either directly or through crosslinkers.
    Type: Application
    Filed: February 20, 2015
    Publication date: December 1, 2016
    Inventors: Jinsang KIM, Sungbaek SEO, Youngchang YU