Patents by Inventor Yasuo Tateno

Yasuo Tateno 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).

  • Printed circuit board
    Patent number: 7297423
    Abstract: A PCB that can transmit a high frequency signal of a GHz band with a low loss includes an insulator and magnetic nanoparticles dispersed in the insulator.
    Type: Grant
    Filed: February 25, 2005
    Date of Patent: November 20, 2007
    Assignees: Sony Corporation, Migaku Takahashi
    Inventors: Mikihisa Mizuno, Yuichi Sasaki, Makoto Inoue, Kenji Yazawa, Migaku Takahashi, Yasuo Tateno, Teiichi Miyauchi
  • Printed circuit board
    Publication number: 20050238858
    Abstract: A PCB that can transmit a high frequency signal of a GHz band with a low loss includes an insulator and magnetic nanoparticles dispersed in the insulator.
    Type: Application
    Filed: February 25, 2005
    Publication date: October 27, 2005
    Inventors: Mikihisa Mizuno, Yuichi Sasaki, Makoto Inoue, Kenji Yazawa, Migaku Takahashi, Yasuo Tateno, Teiichi Miyauchi
  • Perpendicular magnetic recording medium and process for production of the same
    Patent number: 5492774
    Abstract: A perpendicular magnetic recording medium having a magnetic layer comprised of a metal magnetic thin film on a nonmagnetic support. The half-value width of the switching field distribution obtained from a remanent magnetization curve in the intrinsic easy direction of magnetization (axis of easy magnetization from which shape magnetic anistrophy is removed) of the magnetic layer is no more than 40 kA/m.Rectangular wave signals are recorded or reproduced on or from a Co--O type perpendicular magnetic recording medium with a direction .theta..sub.E of the axis of easy magnetization tilted in a range of 10.degree. to 45.degree. from the direction perpendicular to the plane of the film of the magnetic layer using a ring type magnetic head with a gap length Lg of not more than 0.18 .mu.m.
    Type: Grant
    Filed: July 20, 1992
    Date of Patent: February 20, 1996
    Assignee: Sony Corporation
    Inventors: Yasuo Tateno, Hiroji Naruse, Mayumi Abe