Patents by Inventor Hironobu Tsubota

Hironobu Tsubota 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).

  • Substrate with intermediate layer for thin-film magnetic head and method of manufacturing the substrate with intermediate layer
    Patent number: 8159783
    Abstract: A thin-film magnetic head substrate according to the present invention includes: a ceramic base with a principal surface; and an undercoat film, which covers the principal surface of the ceramic base. An electrical/magnetic transducer is provided on the undercoat film. The substrate further includes an intermediate layer between the principal surface of the ceramic base and the undercoat film. The intermediate layer is made of a material other than an aluminum oxide and has been patterned so as to make a portion of the principal surface of the ceramic base contact with the undercoat film.
    Type: Grant
    Filed: May 13, 2005
    Date of Patent: April 17, 2012
    Assignee: Hitachi Metals, Ltd.
    Inventors: Taisuke Hirooka, Hironobu Tsubota
  • Substrate for thin-film magnetic head
    Patent number: 7675708
    Abstract: A thin-film magnetic head substrate includes a ceramic base, an undercoat film of an aluminum oxide, and an intermediate layer, which is sandwiched between the ceramic base and the undercoat film and which is made of a material other than the aluminum oxide and an Al—Ti—O compound.
    Type: Grant
    Filed: July 7, 2004
    Date of Patent: March 9, 2010
    Assignee: Hitachi Metals, Ltd.
    Inventor: Hironobu Tsubota
  • Substrate for thin-film magnetic head and method of manufacturing the substrate
    Patent number: 7203031
    Abstract: A substrate for a thin-film magnetic head includes a ceramic base and an undercoat film of amorphous SiC, which is supported on the ceramic base.
    Type: Grant
    Filed: December 16, 2002
    Date of Patent: April 10, 2007
    Assignee: Neomax Co., Ltd.
    Inventors: Hironobu Tsubota, Shinji Tsujimoto, Taisuke Hirooka
  • Substrate for thin-film magnetic head and method of manufacturing the substrate
    Publication number: 20050024772
    Abstract: A thin-film magnetic head substrate includes a ceramic base, an undercoat film of an aluminum oxide, and an intermediate layer, which is sandwiched between the ceramic base and the undercoat film and which is made of a material other than the aluminum oxide and an Al—Ti—O compound.
    Type: Application
    Filed: July 7, 2004
    Publication date: February 3, 2005
    Inventor: Hironobu Tsubota
  • Slider head having a sic underlayer
    Publication number: 20040037003
    Abstract: A substrate for a thin-film magnetic head includes a ceramic base and an undercoat film of amorphous SiC, which is supported on the ceramic base.
    Type: Application
    Filed: June 3, 2003
    Publication date: February 26, 2004
    Inventors: Hironobu Tsubota, Shinji Tsujimoto, Taisuke Hirooka