Patents by Inventor Yeon A. Hwang

Yeon A. Hwang 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: 20210214544
    Abstract: Provided is a thermoplastic resin composition which includes: a graft copolymer prepared by graft-polymerizing an aromatic vinyl-based monomer and a vinyl cyan-based monomer onto an acrylic rubber polymer; a first matrix copolymer including a C1-C3 alkyl (meth)acrylate-based monomer unit, an aromatic vinyl-based monomer unit and a vinyl cyan-based monomer unit; a second matrix copolymer including a C1-C3 alkyl (meth)acrylate-based monomer unit, an aromatic vinyl-based monomer unit and a vinyl cyan-based monomer unit; and an additive including a polymer including a C1-C3 alkyl (meth)acrylate-based monomer unit, wherein the first matrix copolymer and the second matrix copolymer have different weight-average molecular weights, specifically, a thermoplastic resin composition which allows high gloss, high hardness, high weather resistance and reduced whitening to be realized.
    Type: Application
    Filed: November 12, 2019
    Publication date: July 15, 2021
    Inventors: Chun Ho PARK, Yong Yeon HWANG, Da Eun SUNG, Yong Hee AN, Jeong Min JANG
  • Publication number: 20210210525
    Abstract: A thin film transistor panel according to an exemplary embodiment includes: a substrate; a first transistor disposed on the substrate and including a first semiconductor layer including a low temperature polysilicon and a first control electrode overlapping the first semiconductor layer; a second transistor disposed on the substrate and including a second semiconductor layer including an oxide semiconductor and a second control electrode overlapping the second semiconductor layer; a first gate insulation layer disposed between the first semiconductor layer and the first control electrode of the first transistor and including a first insulation layer and a second insulation layer; and a second gate insulation layer disposed between the second semiconductor layer and the second control electrode of the second transistor and including the second insulation layer, wherein the density of the first insulation layer may be higher than the density of the second insulation layer, the first semiconductor layer of the f
    Type: Application
    Filed: December 17, 2020
    Publication date: July 8, 2021
    Inventors: Duk Young JEONG, Chae Yeon HWANG, Dong Gyu EO
  • Patent number: 11053225
    Abstract: A pyrimidine derivative compound of Chemical Formula 1, an optical isomer thereof, or a pharmaceutically acceptable salt thereof, and a composition for preventing or treating cancer comprising the same as an active ingredient. The pyrimidine derivative compound of Chemical Formula 1, the optical isomer thereof, or the pharmaceutically acceptable salt thereof has an excellent selective inhibitory effect especially against TYRO 3 among TAM receptor inhibitory effects, and thus can be used as an excellent composition of preventing or treating cancer without adverse effects resulting from the inhibition of Axl and Mer.
    Type: Grant
    Filed: May 2, 2018
    Date of Patent: July 6, 2021
    Assignee: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
    Inventors: Sung Yun Cho, Chang Hoon Lee, Yong Ki Min, Jong Yeon Hwang
  • Publication number: 20210198484
    Abstract: Provided is a thermoplastic resin composition which includes: a base resin including a polyarylene oxide-based polymer at 100 parts by weight; and an additive including one or more selected from the group consisting of compounds represented by Chemical Formula 1-1 to Chemical Formula 1-3 at 0.1 to 5 parts by weight, and can be used for producing a thermoplastic resin molded article which exhibits an excellent coloring property and thus has an aesthetically pleasing appearance.
    Type: Application
    Filed: April 5, 2019
    Publication date: July 1, 2021
    Inventors: Je Sun YOO, Ki Young NAM, Yong Yeon HWANG, Jae Yong SIM, Seon Hyeong BAE, Jae Yeon BAE, In Seok KIM
  • Publication number: 20210189582
    Abstract: Disclosed is a method of manufacturing a blank for hot stamping, which includes forming a plated layer on a steel plate by immersing the steel plate in a plating bath including aluminum and silicon; and heating the steel plate on which the plated layer is formed at a first temperature for a first time period.
    Type: Application
    Filed: December 2, 2020
    Publication date: June 24, 2021
    Inventors: Seung Pill Jung, Hye Jin Kim, Kyu Yeon Hwang, Hyun Yeong Jung, Jin Ho Lee
  • Publication number: 20210187583
    Abstract: Disclosed is a hot-stamping component, which includes a base steel plate; and a plated layer on the base steel plate and including a first layer, a second layer, and an intermetallic compound portion having an island shape in the second layer, wherein the first layer and the second layer are sequentially stacked, and an area fraction of the intermetallic compound portion with respect to the second layer is an amount of 20% to 60%.
    Type: Application
    Filed: December 2, 2020
    Publication date: June 24, 2021
    Inventors: Hye Jin Kim, Kyu Yeon Hwang, Hyun Yeong Jung, Jin Ho Lee, Seung Pill Jung
  • Patent number: 11034778
    Abstract: The present invention provides a method of preparing a graft copolymer, which comprises: emulsion-polymerizing one or more selected from the group consisting of an aromatic vinyl-based monomer to prepare a seed, a vinylcyano-based monomer and an alkyl (meth)acrylate-based monomer; emulsion-polymerizing the seed and an alkyl (meth)acrylate-based monomer to prepare a core; and emulsion-polymerizing the core, an aromatic vinyl-based monomer and a vinylcyano-based monomer to prepare a shell, wherein one or more steps selected from the group consisting of the steps of preparing the seed, the core and the shell comprises adding an emulsifier comprising a compound represented by Formula 1 below.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: June 15, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Wang Rae Joe, Bong Keun Ahn, Min Jung Kim, Yong Yeon Hwang, Jang Won Park
  • Publication number: 20210171695
    Abstract: The present invention relates to a method of preparing an ASA graft copolymer, a method of preparing a thermoplastic resin composition including the ASA graft copolymer, and a method of manufacturing a molded article using the thermoplastic resin composition.
    Type: Application
    Filed: January 12, 2018
    Publication date: June 10, 2021
    Inventors: Min Jung KIM, Yong Yeon HWANG, Hyun Taek OH, Bong Keun AHN, Chun Ho PARK, Eun Soo KANG, Yong Hee AN, Jang Won PARK
  • Publication number: 20210160223
    Abstract: An anonymous credential authentication system receives an anonymous credential signature value indicating that setting proposition information using a credential is satisfied from a user device that has been issued the credential combined with multiple pieces of attribute information constituting personal information, generates signer authentication information that confirms a signer of the anonymous credential signature value using an opening key, and outputs the signer authentication information.
    Type: Application
    Filed: November 25, 2020
    Publication date: May 27, 2021
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jung Yeon HWANG, Seung-Hyun KIM, Sung-Hoon LEE, Soo Hyung KIM, Sangrae CHO, Seok Hyun KIM, Young Seob CHO, Youngsam KIM, Jong-Hyouk NOH, Kwantae CHO, Jin-Man CHO
  • Patent number: 11008431
    Abstract: The present application relates to a method for preparing a barrier film. The present application can provide a method for preparing a barrier film having excellent barrier characteristics and optical performances. The barrier film produced by the method of the present application can be effectively used not only for packaging material for food or medicine, and the like, but also for various applications, such as LCDs (Liquid Crystal Displays) or a solar cells, substrates for electronic papers or OLEDs (Organic Light Emitting Diodes) or sealing films.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: May 18, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Sung Jin Shin, Dong Ryul Kim, Jang Yeon Hwang
  • Publication number: 20210141882
    Abstract: Disclosed herein are an apparatus and method for user authentication based on multiple pieces of biometric information. The apparatus may include one or more processors and executable memory for storing at least one program executed by the one or more processors. The at least one program receives multiple pieces of biometric information from the client device of a user, generates the personal identifier of the user using a neural network and a Bloom filter algorithm, and checks the similarity between the personal identifier of the user and each of personal identifiers previously registered in a database, thereby authenticating the user.
    Type: Application
    Filed: October 8, 2020
    Publication date: May 13, 2021
    Inventors: Kwan-Tae CHO, Seok-Hyun KIM, Soo-Hyung KIM, Seung-Hyun KIM, Young-Sam KIM, Jong-Hyouk NOH, Sang-Rae CHO, Young-Seob CHO, Jin-Man CHO, Jung-Yeon HWANG
  • Publication number: 20210119179
    Abstract: Provided is a light-diffusing barrier film. The film is an integral film comprising a barrier layer, a base layer and a light-diffusing layer, sequentially. The film can prevent moisture penetration into a device such as an organic light emitting device, and also imparts a light-diffusing function to the device. In particular, the film can have excellent moisture blocking properties even after a roll-to-roll process.
    Type: Application
    Filed: April 17, 2019
    Publication date: April 22, 2021
    Inventors: Hee Joon JEONG, Jang Yeon HWANG, Bo Ra PARK, Sung Jin SHIN, Hee Wang YANG
  • Publication number: 20210114331
    Abstract: Provided is a barrier film that includes a base layer (A), and a barrier layer (B) located on one side of the base layer and including one or more cured layers of polysilazane layers having a surface (S) of a concavo-convex structure formed by protruding particles, the barrier film having excellent barrier properties against the external environment, and excellent optical properties. The barrier film can be used for an electronic product sensitive to moisture etc.
    Type: Application
    Filed: November 28, 2018
    Publication date: April 22, 2021
    Inventors: Hee Joon JEONG, Jang Yeon HWANG, Bo Ra PARK, Sung Jin SHIN, Hee Wang YANG
  • Publication number: 20210108070
    Abstract: Provided is a thermoplastic resin composition which includes: a graft copolymer prepared by graft-polymerizing an aromatic vinyl-based monomer and a vinyl cyan-based monomer onto an acrylic rubber polymer having an average particle diameter of 50.0 to 90.0 nm; a matrix copolymer including a C1-C3 alkyl (meth)acrylate-based monomer unit, an aromatic vinyl-based monomer unit and a vinyl cyan-based monomer unit; and an additive including a polymer including a C1-C3 alkyl (meth)acrylate-based monomer unit, specifically, a thermoplastic resin composition which has improved properties in terms of elongation, processability, weather resistance, colorability, hardness, chemical resistance, scratch resistance, a whitening phenomenon, surface gloss and appearance quality while having excellent basic properties.
    Type: Application
    Filed: November 13, 2019
    Publication date: April 15, 2021
    Inventors: Chun Ho PARK, Yong Yeon HWANG, Da Eun SUNG, Yong Hee AN, Jeong Min JANG
  • Publication number: 20210086555
    Abstract: The present disclosure relates to an air disk brake for a commercial vehicle, and more particularly, to an air disk brake for a commercial vehicle in which a bearing housing and a wheel flange of a brake assembly coupled to a vehicle axle are formed with a separate structure for more convenient replacement of a disk rotor.
    Type: Application
    Filed: October 22, 2019
    Publication date: March 25, 2021
    Inventors: Yeon Seung Kim, Sung Hoon Kim, Dae Yeon Hwang
  • Patent number: 10941072
    Abstract: The disclosed fluorophosphate glasses for an active device include: a metaphosphate composition including Al(PO3)3; a fluoride composition including BaF2 and SrF2; and a dopant composed of ErF3 and YbF3, and have thermal and mechanical properties to be able to be used as a glass base material for an active device (e.g., optical fiber laser), have a high emission cross-section characteristic, have a reinforced upconversion and downconversion emission characteristic, and have high sensitivity S in a cryogenic environment.
    Type: Grant
    Filed: May 19, 2018
    Date of Patent: March 9, 2021
    Assignee: KOREA PHOTONICS TECHNOLOGY INSTITUTE
    Inventors: Ju Hyeon Choi, Jung Whan In, Yeon Hwang, Young Bok Kim
  • Publication number: 20210044428
    Abstract: A blockchain-based personal information management apparatus and method. The blockchain-based personal information management method includes recording, by a first server device, an encrypted value of personal information of a user and a hash value of the personal information in a blockchain, generating, by the first server device, a proof key to be used to generate a personal information proof of the personal information and a verification key to be used to verify the personal information proof based on the personal information, generating, by a blockchain-based personal information management apparatus, the personal information proof from values recorded in the blockchain using the proof key and a prestored prove function related to a zero-knowledge proof, and verifying, by a second server device, the personal information proof from the values recorded in the blockchain using the verification key and a prestored verify function related to the zero-knowledge proof.
    Type: Application
    Filed: April 24, 2020
    Publication date: February 11, 2021
    Inventors: Jung-Yeon HWANG, Hyun-Ok OH, Seung-Hyun KIM, Soo-Hyung KIM, Jeong-Hyuk LEE
  • Publication number: 20210041739
    Abstract: A display device and a mold frame are provided. The display device includes a mold frame which is disposed above a light source member and having a sidewall portion, a mounting portion protruding inward from a lower end of the sidewall portion, and an inclined portion comprising an upper inclined portion and a lower inclined portion disposed below the upper inclined portion, the upper inclined portion extending downward and inward from a protruding end of the mounting portion and located on an upper portion of the inclined portion; and a display panel disposed above the mold frame, wherein the mold frame comprises a light transmitting portion configured to transmit incident light and a light reflecting portion configured to reflect the incident light, the light transmitting portion comprises the sidewall portion, the mounting portion, and the upper inclined portion, and the light reflecting portion comprises the lower inclined portion.
    Type: Application
    Filed: May 7, 2020
    Publication date: February 11, 2021
    Inventor: Sung Yeon HWANG
  • Publication number: 20210024678
    Abstract: The present invention relates to a method for preparing a graft copolymer and a graft copolymer. The method for preparing a graft copolymer includes the steps of: 1) preparing a seed by adding one or more selected from the group consisting of an alkyl (meth)acrylate-based monomer, an aromatic vinyl-based monomer, and a vinyl cyan-based monomer and carrying out polymerization; 2) preparing a core in the presence of the seed by adding an alkyl (meth)acrylate-based monomer and carrying out polymerization; and 3) preparing a shell in the presence of the core by adding an aromatic vinyl-based monomer and a vinyl cyan-based monomer and carrying out polymerization, wherein an activator including a compound represented by Chemical Formula 1 is added in the step 3), and wherein the core has an average particle diameter of 320 nm to 520 nm.
    Type: Application
    Filed: August 28, 2019
    Publication date: January 28, 2021
    Inventors: Bong Keun AHN, Min Jung KIM, Wang Rae JOE, Yong Yeon HWANG, Jang Won PARK, Ji Yoon JEON
  • Publication number: 20210007949
    Abstract: The present invention relates to a polyhedral complex, a cosmetic agent having the polyhedral complex formed therein, and a cosmetic composition comprising same, the polyhedral complex comprising: a thixotropic polyhedral structure formed of a plurality of flat-type substances; and a mixture of a functional substance and a solvent accommodated in the polyhedral structure. Furthermore, the present invention relates to a method for manufacturing the cosmetic agent, the method comprising: mixing the plurality of flat-type substances, the functional substance, and the solvent; and high-pressure spraying the mixture, and to a method for stabilizing the functional substance in the cosmetic agent.
    Type: Application
    Filed: April 3, 2019
    Publication date: January 14, 2021
    Inventors: Sung Ho LEE, Se Yeon HWANG, Yeong Gi KIM