Patents by Inventor Dong Sook Sinn

Dong Sook Sinn 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: 7791859
    Abstract: The invention relates to a method for manufacturing dielectric ceramic powder and a multilayer ceramic capacitor using the ceramic powder. According to the invention, BaCO3 powder is dispersed into a solution of solvent and dispersant to prepare BaCO3 slurry and then the resultant BaCO3 slurry is wet-milled. Also, TiO2 powder slurry is mixed into the wet-milled BaCO3 slurry to form mixed slurry and then the mixed slurry is dried into mixed powder. Finally, the dried mixed powder is calcined to produce BaTiO3 powder.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: September 7, 2010
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Sung Soo Ryu, Seon Cheol Park, Sang Pyo Lee, Dong Sook Sinn, Sang Kyun Lee, Dang Hyok Yoon
  • Publication number: 20090103238
    Abstract: The invention relates to a method for manufacturing dielectric ceramic powder and a multilayer ceramic capacitor using the ceramic powder. According to the invention, BaCO3 powder is dispersed into a solution of solvent and dispersant to prepare BaCO3 slurry and then the resultant BaCO3 slurry is wet-milled. Also, TiO2 powder slurry is mixed into the wet-milled BaCO3 slurry to form mixed slurry and then the mixed slurry is dried into mixed powder. Finally, the dried mixed powder is calcined to produce BaTiO3 powder.
    Type: Application
    Filed: December 19, 2008
    Publication date: April 23, 2009
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Sung Soo RYU, Seon Cheol Park, Sang Pyo Lee, Dong Sook Sinn, Sang Kyun Lee, Dang Hyok Yoon
  • Patent number: 7079374
    Abstract: A glass frit for dielectrics, a dielectric ceramic composition, a multilayer ceramic capacitor, and a method for manufacturing the same are disclosed. The glass frit has a composition represented by the formula aSiO2-bB2O3-cLi2O-dK2O-eCaO-fAl2O3-gTiO2-hZrO2, wherein the ratio of components satisfies the conditions of 20?a?35, 20?b?35, 20?c?30, 3?d?5, 2?e?12, 2?f?10, 1?g?12 and 1?h?7 in terms of mol % where a+b+c+d+e+f+g+h=100. The dielectric ceramic composition comprises 100 parts by weight of (Ca1-xRx)(Zr1-yTiy)O3, 0.5˜2.5 parts by weight of the glass frit, and 1.0˜5.0 parts by weight of a Mn compound. Additionally, the multilayer ceramic capacitor, and the method for manufacturing the same also use the glass frit having the above composition. The ratio of tetracoordinate boron to tricoordinate boron is increased in a lithium borosilicate glass, thereby enhancing structural property, and the components of Al2O3, TiO2 and ZrO2, enhance acid resistance.
    Type: Grant
    Filed: June 30, 2005
    Date of Patent: July 18, 2006
    Assignee: Samsung-Electro Mechanics Co., Ltd.
    Inventors: Kyeong Ho Kim, Dong Sook Sinn, Tae Young Kim, Hyo Soon Shin, Soon Mo Song, Ic Seob Kim