Patents by Inventor Sohei Horiuchi

Sohei Horiuchi 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: 8098462
    Abstract: A manufacturing method of a thin-film magnetic head, includes a step of forming many thin-film magnetic heads arranged along row and column directions on a wafer, each of the thin-film magnetic heads having a read head element, a write head element, and pairs of probe-use pads electrically connected with the read head element and the write head element, respectively, the pairs of probe-use pads being positioned so that at least part of each probe-use pad is removed by a cutting process along the row direction, a step of obtaining a plurality of row-bars by cutting the wafer along the row direction so that the at least part of each probe-use pad is removed, each of the obtained row-bars having the thin-film magnetic heads aligned in the row direction, a step of forming pairs of bonding pads electrically connected with the read head element and the write head element, respectively, on a surface opposite to an ABS of each thin-film magnetic head of each of the row-bars, and a step of cutting each row-bar along t
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: January 17, 2012
    Assignee: TDK Corporation
    Inventors: Tetsuya Hiraki, Yoshiaki Tanaka, Yuji Otsubo, Sohei Horiuchi
  • Publication number: 20100321822
    Abstract: A manufacturing method of a thin-film magnetic head, includes a step of forming many thin-film magnetic heads arranged along row and column directions on a wafer, each of the thin-film magnetic heads having a read head element, a write head element, and pairs of probe-use pads electrically connected with the read head element and the write head element, respectively, the pairs of probe-use pads being positioned so that at least part of each probe-use pad is removed by a cutting process along the row direction, a step of obtaining a plurality of row-bars by cutting the wafer along the row direction so that the at least part of each probe-use pad is removed, each of the obtained row-bars having the thin-film magnetic heads aligned in the row direction, a step of forming pairs of bonding pads electrically connected with the read head element and the write head element, respectively, on a surface opposite to an ABS of each thin-film magnetic head of each of the row-bars, and a step of cutting each row-bar along t
    Type: Application
    Filed: June 19, 2009
    Publication date: December 23, 2010
    Applicant: TDK Corporation
    Inventors: Tetsuya Hiraki, Yoshiaki Tanaka, Yuji Otsubo, Sohei Horiuchi
  • Patent number: 7843667
    Abstract: Provided is a thin film magnetic head capable of suppressing an occurrence of a track erase, decreasing an influence on a magnetoresistive element caused by a magnetic flux generated from a thin film coil, and further decreasing the parasitic capacity. The thin film magnetic head has, in order in a stacked direction, a first magnetic shield layer, a magnetoresistive element, a second magnetic shield layer, a third magnetic shield layer, a main magnetic pole layer and a return yoke layer. A width in a track width direction of at least one of the first and the second magnetic shield layers is smaller than widths in a track width direction of the third magnetic shield layer and the return yoke layer.
    Type: Grant
    Filed: May 21, 2007
    Date of Patent: November 30, 2010
    Assignee: TDK Corporation
    Inventors: Kei Hirata, Norikazu Ota, Yuichi Watabe, Tetsuro Sasaki, Takeo Kagami, Tetsuya Roppongi, Kazuki Sato, Yuji Otsubo, Sohei Horiuchi, Yoshiaki Tanaka, Kenji Yokoyama, Noriaki Kasahara
  • Publication number: 20080291582
    Abstract: Provided is a thin film magnetic head capable of suppressing an occurrence of a track erase, decreasing an influence on a magnetoresistive element caused by a magnetic flux generated from a thin film coil, and further decreasing the parasitic capacity. The thin film magnetic head has, in order in a stacked direction, a first magnetic shield layer, a magnetoresistive element, a second magnetic shield layer, a third magnetic shield layer, a main magnetic pole layer and a return yoke layer. A width in a track width direction of at least one of the first and the second magnetic shield layers is smaller than widths in a track width direction of the third magnetic shield layer and the return yoke layer.
    Type: Application
    Filed: May 21, 2007
    Publication date: November 27, 2008
    Applicant: TDK CORPORATION
    Inventors: Kei Hirata, Norikazu Ota, Yuichi Watabe, Tetsuro Sasaki, Takeo Kagami, Tetsuya Roppongi, Kazuki Sato, Yuji Otsubo, Sohei Horiuchi, Yoshiaki Tanaka, Kenji Yokoyama, Noriaki Kasahara