Patents by Inventor Yasuko OOE

Yasuko OOE 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
    Patent number: 11158457
    Abstract: A dielectric ceramic composition includes, as a main component, a perovskite compound containing Sr and Zr and may contain Ca and/or Ti, further contains Li and Si, and may contain Mn. When a total content of Zr and Ti is 100 parts by mol, a total content (100×m) of parts by mol of Sr and Ca is 0.8?m?1.3, a content a of parts by mol of Mn is 0?a?10, a content b of parts by mol of Li is 5?b?15, a content c of parts by mol of Si is 20?c?40, a molar ratio x of Ca/(Sr+Ca) is 0?x?0.8, and a molar ratio y of Ti/(Zr+Ti) is 0?y?0.5.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: October 26, 2021
    Assignee: MURATA MANUFACTURING COMPANY, LTD.
    Inventors: Yasuko Ooe, Tatsuya Izumi, Tomotaka Hirata
  • DIELECTRIC CERAMIC COMPOSITION AND MULTILAYER CERAMIC CAPACITOR
    Publication number: 20200126723
    Abstract: A dielectric ceramic composition includes, as a main component, a perovskite compound containing Sr and Zr and may contain Ca and/or Ti, further contains Li and Si, and may contain Mn. When a total content of Zr and Ti is 100 parts by mol, a total content (100×m) of parts by mol of Sr and Ca is 0.8?m?1.3, a content a of parts by mol of Mn is 0?a?10, a content b of parts by mol of Li is 5?b?15, a content c of parts by mol of Si is 20?c?40, a molar ratio x of Ca/(Sr+Ca) is 0?x?0.8, and a molar ratio y of Ti/(Zr+Ti) is 0?y?0.5.
    Type: Application
    Filed: October 22, 2019
    Publication date: April 23, 2020
    Inventors: Yasuko OOE, Tatsuya IZUMI, Tomotaka HIRATA