Patents by Inventor Kenji Koseki

Kenji Koseki 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).

  • Hybrid electrolytic capacitor and method for manufacturing same
    Patent number: 11929214
    Abstract: Provided is a hybrid electrolytic capacitor having large capacitance, low ESR, and superior high-frequency characteristics and high-temperature endurance.
    Type: Grant
    Filed: December 15, 2020
    Date of Patent: March 12, 2024
    Assignee: NIPPON CHEMI-CON CORPORATION
    Inventors: Kazuya Koseki, Kazuhiro Nagahara, Kenji Machida
  • Piezoelectric porcelain composition, piezoelectric device, and methods of making thereof
    Patent number: 7067965
    Abstract: A piezoelectric porcelain composition containing a complex oxide having a perovskite structure mainly composed of Pb, Zr, and Ti; and the following component (a) and/or (b), or component (A) and/or (B): (a) Ag and/or an Ag compound, and Mo and/or an Mo compound (b) silver molybdate [Ag2MoO4] (A) Ag and/or an Ag compound, Mo and/or an Mo compound, and W and/or a W compound (B) silver molybdate-tungstate [Ag2Mo(1?X)WXO4](where X is a number from 0.3 to 0.
    Type: Grant
    Filed: September 17, 2003
    Date of Patent: June 27, 2006
    Assignee: TDK Corporation
    Inventors: Satoshi Sasaki, Kenji Koseki
  • Piezoelectric porcelain composition, piezoelectric device, and methods of making thereof
    Publication number: 20040222719
    Abstract: A piezoelectric porcelain composition containing a complex oxide having a perovskite structure mainly composed of Pb, Zr, and Ti; and the following component (a) and/or (b), or component (A) and/or (B):
    Type: Application
    Filed: September 17, 2003
    Publication date: November 11, 2004
    Applicant: TDK CORPORATION
    Inventors: Satoshi Sasaki, Kenji Koseki