Patents by Inventor Seung Jun HWANG

Seung Jun 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).

  • Patent number: 12139640
    Abstract: An insulating heat-radiating coating composition including a coating layer-forming component including a main resin; and an insulating heat-radiating filler, which not only is capable of exhibiting excellent heat-radiating performance due to excellent thermal conductivity and heat radiation but also forms an insulating heat-radiating coating layer having a heat-insulating property. In addition, an insulating heat-radiating coating layer formed using the insulating heat-radiating coating composition has excellent adhesiveness to a surface to be coated, thereby remarkably preventing the peeling of an insulating heat-radiating coating layer during use and maintaining the durability of the insulating heat-radiating coating layer against physical and chemical stimuli such as external heat, organic solvents, moisture, and impact after formation of the insulating heat-radiating coating layer.
    Type: Grant
    Filed: January 3, 2018
    Date of Patent: November 12, 2024
    Assignees: AMOSENSE CO., LTD., AMOGREENTECH CO., LTD.
    Inventors: Hwan Ku Lee, Seung Jae Hwang, Beom Jun Kim, Moon Young Hwang
  • Patent number: 9269965
    Abstract: Disclosed are a platinum (Pt)-free, palladium (Pd)-yttrium (Y) alloy catalyst having superior oxygen reduction reaction activity and stability, a method for preparing the same, and a fuel cell including the catalyst. Since the Pt-free Pd—Y catalyst is inexpensive, it may be usefully applicable for fuel cells, particularly polymer electrolyte membrane fuel cells.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: February 23, 2016
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Sung Jong Yoo, Soo-Kil Kim, Seung Jun Hwang, Suk-Woo Nam, Tae Hoon Lim, Seong Ahn Hong
  • Publication number: 20160036065
    Abstract: Disclosed is a method for producing a core-shell structured electrocatalyst for a fuel cell. The method includes uniformly supporting nano-sized core particles on a support to obtain a core support, and selectively forming a shell layer only on the surface of the core particles of the core support. According to the method, the core and the shell layer can be formed without the need for a post-treatment process, such as chemical treatment and heat treatment. Further disclosed is a core-shell structured electrocatalyst for a fuel cell produced by the method. The core-shell structured electrocatalyst has a large amount of supported catalyst and exhibits superior catalytic activity and excellent electrochemical properties. Further disclosed is a fuel cell including the core-shell structured electrocatalyst.
    Type: Application
    Filed: July 29, 2015
    Publication date: February 4, 2016
    Inventors: Seung Jun HWANG, Soo-Kil KIM, Sung Jong YOO, Jong Hyun JANG, Eun Ae CHO, Hyoung-Juhn KIM, Suk-Woo NAM, Tae Hoon LIM
  • Patent number: 8859458
    Abstract: Provided are a method of preparing an electrocatalyst for fuel cells in a core-shell structure, an electrocatalyst for fuel cells having a core-shell structure, and a fuel cell including the electrocatalyst for fuel cells. The method may be useful in forming a core and a shell layer without performing a subsequent process such as chemical treatment or heat treatment and forming a core support in which core particles having a nanosize diameter are homogeneously supported, followed by selectively forming shell layers on surfaces of the core particles in the support. Also, the electrocatalyst for fuel cells has a high catalyst-supporting amount and excellent catalyst activity and electrochemical property.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: October 14, 2014
    Assignee: Korea Institute of Science and Technology
    Inventors: Seung Jun Hwang, Sung Jong Yoo, Soo Kil Kim, Eun Ae Cho, Jong Hyun Jang, Hyoung Juhn Kim, Suk Woo Nam, Tae Hoon Lim
  • Publication number: 20130059231
    Abstract: Disclosed is a method for producing a core-shell structured electrocatalyst for a fuel cell. The method includes uniformly supporting nano-sized core particles on a support to obtain a core support, and selectively forming a shell layer only on the surface of the core particles of the core support. According to the method, the core and the shell layer can be formed without the need for a post-treatment process, such as chemical treatment and heat treatment. Further disclosed is a core-shell structured electrocatalyst for a fuel cell produced by the method. The core-shell structured electrocatalyst has a large amount of supported catalyst and exhibits superior catalytic activity and excellent electrochemical properties. Further disclosed is a fuel cell including the core-shell structured electrocatalyst.
    Type: Application
    Filed: February 23, 2012
    Publication date: March 7, 2013
    Inventors: Seung Jun HWANG, Soo-Kil KIM, Sung Jong YOO, Jong Hyun JANG, Eun Ae CHO, Hyoung-Juhn KIM, Suk-Woo NAM, Tae Hoon LIM
  • Publication number: 20120135862
    Abstract: Provided are a method of preparing an electrocatalyst for fuel cells in a core-shell structure, an electrocatalyst for fuel cells having a core-shell structure, and a fuel cell including the electrocatalyst for fuel cells. The method may be useful in forming a core and a shell layer without performing a subsequent process such as chemical treatment or heat treatment and forming a core support in which core particles having a nanosize diameter are homogeneously supported, followed by selectively forming shell layers on surfaces of the core particles in the support. Also, the electrocatalyst for fuel cells has a high catalyst-supporting amount and excellent catalyst activity and electrochemical property.
    Type: Application
    Filed: September 21, 2011
    Publication date: May 31, 2012
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Seung Jun HWANG, Sung Jong YOO, Soo Kil KIM, Eun Ae CHO, Jong Hyun JANG, Hyoung Juhn KIM, Suk Woo NAM, Tae Hoon LIM
  • Publication number: 20110319256
    Abstract: Disclosed are a platinum (Pt)-free, palladium (Pd)-yttrium (Y) alloy catalyst having superior oxygen reduction reaction activity and stability, a method for preparing the same, and a fuel cell including the catalyst. Since the Pt-free Pd-Y catalyst is inexpensive, it may be usefully applicable for fuel cells, particularly polymer electrolyte membrane fuel cells.
    Type: Application
    Filed: September 17, 2010
    Publication date: December 29, 2011
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Sung Jong YOO, Soo-Kil KIM, Seung Jun HWANG, Suk-Woo NAM, Tae Hoon LIM, Seong Ahn HONG