Patents by Inventor Hiroko Shinozaki

Hiroko Shinozaki 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: 7073250
    Abstract: A thin film magnetic head wherein a partial insulating layer is formed on a bottom pole layer with a gap layer provided therebetween, the gap depth Gd being regulated by the distance from a surface facing a recording medium to the partial insulating layer. A magnetic flux partially leaks from a tip region of an upper core layer to the bottom pole layer through the partial insulating layer to effectively suppress magnetic saturation of the tip region, thereby improving the NLTS characteristic and PW50 characteristic, and suppressing the occurrence of side fringing.
    Type: Grant
    Filed: August 1, 2003
    Date of Patent: July 11, 2006
    Assignee: Alps Electric Co., Ltd.
    Inventors: Sumihito Morita, Naruaki Oki, Toshinori Watanabe, Hiroko Shinozaki
  • Patent number: 6999275
    Abstract: A thin film magnetic head wherein a partial insulating layer is formed on a bottom pole layer with a gap layer provided therebetween, the gap depth Gd being regulated by the distance from a surface facing a recording medium to the partial insulating layer. A magnetic flux partially leaks from a tip region of an upper core layer to the bottom pole layer through the partial insulating layer to effectively suppress magnetic saturation of the tip region, thereby improving the NLTS characteristic and PW50 characteristic, and suppressing the occurrence of side fringing.
    Type: Grant
    Filed: September 7, 2001
    Date of Patent: February 14, 2006
    Assignee: Alps Electric Co., Ltd.
    Inventors: Sumihito Morita, Naruaki Oki, Toshinori Watanabe, Hiroko Shinozaki
  • Patent number: 6954333
    Abstract: A thin film magnetic head wherein a partial insulating layer is formed on a bottom pole layer with a gap layer provided therebetween, the gap depth Gd being regulated by the distance from a surface facing a recording medium to the partial insulating layer. A magnetic flux partially leaks from a tip region of an upper core layer to the bottom pole layer through the partial insulating layer to effectively suppress magnetic saturation of the tip region, thereby improving the NLTS characteristic and PW50 characteristic, and suppressing the occurrence of side fringing.
    Type: Grant
    Filed: October 17, 2003
    Date of Patent: October 11, 2005
    Assignee: Alps Electric Co., Ltd.
    Inventors: Sumihito Morita, Naruaki Oki, Toshinori Watanabe, Hiroko Shinozaki
  • Publication number: 20040090703
    Abstract: A thin film magnetic head wherein a partial insulating layer is formed on a bottom pole layer with a gap layer provided therebetween, the gap depth Gd being regulated by the distance from a surface facing a recording medium to the partial insulating layer. A magnetic flux partially leaks from a tip region of an upper core layer to the bottom pole layer through the partial insulating layer to effectively suppress magnetic saturation of the tip region, thereby improving the NLTS characteristic and PW50 characteristic, and suppressing the occurrence of side fringing.
    Type: Application
    Filed: October 17, 2003
    Publication date: May 13, 2004
    Inventors: Sumihito Morita, Naruaki Oki, Toshinori Watanabe, Hiroko Shinozaki
  • Publication number: 20040021981
    Abstract: A thin film magnetic head wherein a partial insulating layer is formed on a bottom pole layer with a gap layer provided therebetween, the gap depth Gd being regulated by the distance from a surface facing a recording medium to the partial insulating layer. A magnetic flux partially leaks from a tip region of an upper core layer to the bottom pole layer through the partial insulating layer to effectively suppress magnetic saturation of the tip region, thereby improving the NLTS characteristic and PW50 characteristic, and suppressing the occurrence of side fringing.
    Type: Application
    Filed: August 1, 2003
    Publication date: February 5, 2004
    Inventors: Sumihito Morita, Naruaki Oki, Toshinori Watanabe, Hiroko Shinozaki
  • Publication number: 20020030931
    Abstract: A thin film magnetic head wherein a partial insulating layer is formed on a bottom pole layer with a gap layer provided therebetween, the gap depth Gd being regulated by the distance from a surface facing a recording medium to the partial insulating layer. A magnetic flux partially leaks from a tip region of an upper core layer to the bottom pole layer through the partial insulating layer to effectively suppress magnetic saturation of the tip region, thereby improving the NLTS characteristic and PW50 characteristic, and suppressing the occurrence of side fringing.
    Type: Application
    Filed: September 7, 2001
    Publication date: March 14, 2002
    Applicant: Alps Electric Co., Ltd.
    Inventors: Sumihito Morita, Naruaki Oki, Toshinori Watanable, Hiroko Shinozaki