Patents by Inventor Gwan Sik Kim

Gwan Sik Kim 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).

  • PREPARING METHOD FOR CONDUCTIVE COMPOSITE, CONDUCTIVE COMPOSITE AND PIEZORESISTIVE DEVICE USING THE SAME
    Publication number: 20230212371
    Abstract: A method of preparing a conductive composite includes immersing a porous base material in a conductive coating solution, and drying the conductive coating solution on the porous base material to form a conductive coating layer on the porous base material. The conductive coating solution includes conductive particles and a solvent, and the surface tension of the solvent is lower than the surface tension of the porous base material by 8 mN/m or more, and a conductive composite is prepared therefrom.
    Type: Application
    Filed: May 19, 2022
    Publication date: July 6, 2023
    Inventors: Kyong Hwa Song, Gwan Sik Kim, Deok Woo Yun, Min Jae Lee
  • Thermoelectric material and method for preparing the same
    Patent number: 10714669
    Abstract: Provided herein are a thermoelectric material and a method for preparing the same. The thermoelectric material may include a plurality of grains formed by a chemical bond between a first element and a second element, a graphene-based material; and metal particles. In particular, the graphene-based material and the metal particles may be in interfaces between the grains.
    Type: Grant
    Filed: November 25, 2017
    Date of Patent: July 14, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation, Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Byung Wook Kim, Jin Woo Kwak, Woo Young Lee, Gwan Sik Kim, Hyun Jun Rim
  • Thermoelectric nanocomposite and process of producing the same
    Patent number: 10644214
    Abstract: A thermoelectric nanocomposite is provided. The thermoelectric nanocomposite includes: a matrix having n-type semiconductor characteristics and comprising Mg, Si, Al, and Bi components, and a nanoinclusion comprising Bi and Mg components. The thermoelectric nanocomposite has significantly increased thermoelectric energy conversion efficiency by simultaneously having an increased Seebeck coefficient and a decreased thermal conductivity, such that the thermoelectric nanocomposite is usefully used to implement a thermoelectric device having high efficiency.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: May 5, 2020
    Assignees: Hyundai Motor Company, Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Byung Wook Kim, Kyong Hwa Song, Han Saem Lee, Jin Woo Kwak, In Woong Lyo, Su Jung Noh, Woo Young Lee, Gwan Sik Kim, Sung Mee Cho
  • THERMOELECTRIC MATERIAL AND METHOD FOR PREPARING THE SAME
    Publication number: 20190097111
    Abstract: Provided herein are a thermoelectric material and a method for preparing the same. The thermoelectric material may include a plurality of grains formed by a chemical bond between a first element and a second element, a graphene-based material; and metal particles. In particular, the graphene-based material and the metal particles may be in interfaces between the grains.
    Type: Application
    Filed: November 25, 2017
    Publication date: March 28, 2019
    Inventors: Byung Wook Kim, Jin Woo Kwak, Woo Young Lee, Gwan Sik Kim, Hyun Jun Rim
  • Thermoelectric material and method for preparing the same
    Patent number: 10074789
    Abstract: Provided herein are a thermoelectric material and a method for preparing the same, wherein the thermoelectric material has excellent thermoelectric performance and high mechanical properties (in particular, fracture toughness), and thus, when the thermoelectric material is applied to a thermoelectric module, the thermoelectric module has excellent performance and efficiency and a long lifespan.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: September 11, 2018
    Assignees: Hyundai Motor Company, Kia Motors Corporation, Industry-Academic Cooperation Foundation,Yonsei University
    Inventors: Byung Wook Kim, Jong Kook Lee, Han Saem Lee, In Woong Lyo, Jin Woo Kwak, Woo Young Lee, Gwan Sik Kim, Hwi Jong Lee
  • THERMOELECTRIC MATERIAL AND METHOD FOR PREPARING THE SAME
    Publication number: 20180175270
    Abstract: Provided herein are a thermoelectric material and a method for preparing the same, wherein the thermoelectric material has excellent thermoelectric performance and high mechanical properties (in particular, fracture toughness), and thus, when the thermoelectric material is applied to a thermoelectric module, the thermoelectric module has excellent performance and efficiency and a long lifespan.
    Type: Application
    Filed: May 25, 2017
    Publication date: June 21, 2018
    Applicants: Hyundai Motor Company, Kia Motors Corporation, Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Byung Wook KIM, Jong Kook LEE, Han Saem LEE, In Woong LYO, Jin Woo KWAK, Woo Young LEE, Gwan Sik KIM, Hwi Jong LEE
  • THERMOELECTRIC NANOCOMPOSITE AND PROCESS OF PRODUCING THE SAME
    Publication number: 20170110644
    Abstract: A thermoelectric nanocomposite is provided. The thermoelectric nanocomposite includes: a matrix having n-type semiconductor characteristics and comprising Mg, Si, Al, and Bi components, and a nanoinclusion comprising Bi and Mg components. The thermoelectric nanocomposite has significantly increased thermoelectric energy conversion efficiency by simultaneously having an increased Seebeck coefficient and a decreased thermal conductivity, such that the thermoelectric nanocomposite is usefully used to implement a thermoelectric device having high efficiency.
    Type: Application
    Filed: April 1, 2016
    Publication date: April 20, 2017
    Inventors: Byung Wook Kim, Kyong Hwa Song, Han Saem Lee, Jin Woo Kwak, In Woong Lyo, Su Jung Noh, Woo Young Lee, Gwan Sik Kim, Sung Mee Cho