Patents by Inventor Shoji Natori

Shoji Natori 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 domain control for an embedded contact sensor for a magnetic recording head
    Patent number: 8643981
    Abstract: A head for magnetic data recording that includes an embedded contact sensor. The embedded contact sensor detects head disk contact by detecting changes in temperature as a result of contact between the head and the disk. The embedded contact sensor includes a thermoresistive layer and a structure for pinning the magnetic domains of the thermoresistive layer. This pinning of the magnetic domains prevents the thermoresistive layer from changing resistance in response to magnetic fields (rather than temperature) so as to avoid unwanted signal noise as a result of a magnetic signal from the magnetic media.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: February 4, 2014
    Assignee: HGST Netherlands B. V.
    Inventor: Shoji Natori
  • MAGNETIC DOMAIN CONTROL FOR AN EMBEDDED CONTACT SENSOR FOR A MAGNETIC RECORDING HEAD
    Publication number: 20130170068
    Abstract: A head for magnetic data recording that includes an embedded contact sensor. The embedded contact sensor detects head disk contact by detecting changes in temperature as a result of contact between the head and the disk. The embedded contact sensor includes a thermoresistive layer and a structure for pinning the magnetic domains of the thermoresistive layer. This pinning of the magnetic domains prevents the thermoresistive layer from changing resistance in response to magnetic fields (rather than temperature) so as to avoid unwanted signal noise as a result of a magnetic signal from the magnetic media.
    Type: Application
    Filed: December 28, 2011
    Publication date: July 4, 2013
    Applicant: Hitachi Global Storage Technologies Netherlands B.V.
    Inventor: Shoji Natori
  • Magnetic head having durability against static electricity with modified time constant
    Patent number: 7558188
    Abstract: Embodiments of the invention provide a read head which is implemented in a magnetic disk drive that supports a high recording density and a high transfer rate and is excellent in static electricity durability. In one embodiment, a magnetic head wherein a charge diffuses from a read element to a slider at a time constant of about 100 ms or less.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: July 7, 2009
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Takayoshi Ohtsu, Shoji Natori
  • Magnetic head with durability against static electricity
    Publication number: 20060132985
    Abstract: Embodiments of the invention provide a read head which is implemented in a magnetic disk drive that supports a high recording density and a high transfer rate and is excellent in static electricity durability. In one embodiment, a magnetic head wherein a charge diffuses from a read element to a slider at a time constant of about 100 ms or less.
    Type: Application
    Filed: November 29, 2005
    Publication date: June 22, 2006
    Applicant: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Takayoshi Ohtsu, Shoji Natori