Patents by Inventor Kenji Ishikake

Kenji Ishikake 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).

  • Magnetic thin film head, the fabrication method, and magnetic disk
    Patent number: 7274541
    Abstract: In formation of an upper shield of a magnetic thin film head by electroplating, a current density of electroplating is regulated stepwise with time. Thus, in the upper shield formation, a film composition and magnetic characteristic with respect to the direction of film thickness can be controlled precisely, making it possible to provide a magnetic thin film head featuring significantly reduced noise-after-write and output fluctuation.
    Type: Grant
    Filed: April 1, 2005
    Date of Patent: September 25, 2007
    Assignee: Hitachi Global Storage Technologies Japan, Ltd.
    Inventors: Gen Oikawa, Shuichi Kojima, Harunobu Saito, Noriyuki Saiki, Masayasu Kagawa, Akira Kondo, Kenji Ishikake, Hiromi Shiina
  • Magnetic thin film head, the fabrication method, and magnetic disk
    Publication number: 20050168876
    Abstract: In formation of an upper shield of a magnetic thin film head by electroplating, a current density of electroplating is regulated stepwise with time. Thus, in the upper shield formation, a film composition and magnetic characteristic with respect to the direction of film thickness can be controlled precisely, making it possible to provide a magnetic thin film head featuring significantly reduced noise-after-write and output fluctuation.
    Type: Application
    Filed: April 1, 2005
    Publication date: August 4, 2005
    Inventors: Gen Oikawa, Shuichi Kojima, Harunobu Saito, Noriyuki Saiki, Masayasu Kagawa, Akira Kondo, Kenji Ishikake, Hiromi Shiina
  • Magnetic thin film head, the fabrication method, and magnetic disk
    Publication number: 20010036043
    Abstract: In formation of an upper shield of a magnetic thin film head by electroplating, a current density of electroplating is regulated stepwise with time. Thus, in the upper shield formation, a film composition and magnetic characteristic with respect to the direction of film thickness can be controlled precisely, making it possible to provide a magnetic thin film head featuring significantly reduced noise-after-write and output fluctuation.
    Type: Application
    Filed: February 16, 2001
    Publication date: November 1, 2001
    Inventors: Gen Oikawa, Shuichi Kojima, Harunobu Saito, Noriyuki Saiki, Masayasu Kagawa, Akira Kondo, Kenji Ishikake, Hiromi Shiina