Patents by Inventor Yoon-Ah ROH

Yoon-Ah ROH 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).

  • Dielectric ceramic composition and multilayer ceramic capacitor using the same
    Patent number: 9334192
    Abstract: The present invention relates to a dielectric ceramic composition, method for preparing the same, and electronic device using the same. According to the present invention, there is provided a dielectric ceramic composition which allows use of a nickel internal electrode, sintering under a reducing atmosphere, and having 1000 or higher dielectric constant while providing excellent dc-bias properties and reliability which is close to paraelectric property. The composition of the present invention can generate high effective capacity under high DC voltage, have strong resistance against electrostatic discharge (ESD) damage, and be used for preparing an electronic device having low acoustic noise.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: May 10, 2016
    Assignees: SAMSUNG ELECTRO-MECHANICS CO., LTD., RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Seok-Hyun Yoon, Masaki Takaki, Yoon-Ah Roh, Dae-Ho Yoon, Chang-Hoon Kim, Doo-Young Kim
  • DIELECTRIC CERAMIC COMPOSITION AND MULTILAYER CERAMIC CAPACITOR USING THE SAME
    Publication number: 20160090325
    Abstract: The present invention relates to a dielectric ceramic composition, method for preparing the same, and electronic device using the same. According to the present invention, there is provided a dielectric ceramic composition which allows use of a nickel internal electrode, sintering under a reducing atmosphere, and having 1000 or higher dielectric constant while providing excellent dc-bias properties and reliability which is close to paraelectric property. The composition of the present invention can generate high effective capacity under high DC voltage, have strong resistance against electrostatic discharge (ESD) damage, and be used for preparing an electronic device having low acoustic noise.
    Type: Application
    Filed: March 18, 2015
    Publication date: March 31, 2016
    Inventors: Seok-Hyun YOON, Masaki TAKAKI, Yoon-Ah ROH, Dae-Ho YOON, Chang-Hoon KIM, Doo-Young KIM