Patents by Inventor Norimitsu Matsusita

Norimitsu Matsusita 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).

  • Publication number: 20140090117
    Abstract: The magnetic head inspection method includes, exciting the cantilever of a magnetic force microscope at a predetermined frequency, the cantilever being provided with a magnetic probe on the end thereof, floating the magnetic probe over the writing head of the magnetic head and two-dimensionally scanning a search range, detecting the specific position of the writing head based on the search two-dimensional magnetic field intensity of the writing head with exciting state of the cantilever in the two-dimensional scan, setting a shape detection range smaller than the search range for detecting the shape of the writing head based on the specific position, and floating the magnetic probe over the writing head with exciting state of the cantilever, detecting the shape of the writing head by detecting the detection two-dimensional magnetic field intensity of the writing head in the two-dimensional scan.
    Type: Application
    Filed: August 15, 2013
    Publication date: March 27, 2014
    Applicant: HITACHI HIGH-TECHNOLOGIES CORPORATION
    Inventors: Teruaki TOKUTOMI, Tsuneo NAKAGOMI, Akira TOBITA, Norimitsu MATSUSITA
  • Publication number: 20130063139
    Abstract: An apparatus for inspecting a magnetic head device inspects an effective track width of a write track of each of magnetic head devices formed on a row bar in order to measure a two-dimensional distribution of magnetic fields generated by the magnetic head devices formed on the row bar while the apparatus is not affected by an external environment. The apparatus has a tray unit, a stage unit, a sample receiving and delivering unit, a magnetic field measuring unit and an effective track width measuring unit on a vibration isolation unit that blocks a vibration from the outside of the apparatus. The tray unit, the stage unit, the sample receiving and delivering unit, the magnetic field measuring unit, the effective track width measuring unit and the vibration isolation table are covered with a sound insulation unit that blocks noise from the outside of the apparatus.
    Type: Application
    Filed: August 2, 2012
    Publication date: March 14, 2013
    Applicant: HITACHI HIGH-TECHNOLOGIES CORPORATION
    Inventors: Teruaki TOKUTOMI, Takeshi SATOH, Akira TOBITA, Naoya SAITOH, Norimitsu MATSUSITA
  • Patent number: 8185968
    Abstract: A magnetic head inspection method is provided with the step that an area smaller than a half of a scanning and measurement area of a magnetic probe in a cantilever unit of the MFM is set as a scanning and measurement area on a surface of a recording portion of the magnetic head that is scanned by the AFM, so as to greatly reduce the inspection time (tact time) of the AFM.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: May 22, 2012
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Tsuneo Nakagomi, Norimitsu Matsusita
  • Publication number: 20110225684
    Abstract: A magnetic head inspection method is provided with the step that an area smaller than a half of a scanning and measurement area of a magnetic probe in a cantilever unit of the MFM is set as a scanning and measurement area on a surface of a recording portion of the magnetic head that is scanned by the AFM, so as to greatly reduce the inspection time (tact time) of the AFM.
    Type: Application
    Filed: February 10, 2011
    Publication date: September 15, 2011
    Applicant: HITACHI HIGH-TECHNOLOGIES CORPORATION
    Inventors: TSUNEO NAKAGOMI, NORIMITSU MATSUSITA