Patents by Inventor Kazuyuki Sonobe

Kazuyuki Sonobe 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).

  • Polishing apparatus with abrasive tape, polishing method using abrasive tape and manufacturing method for magnetic disk
    Patent number: 6893329
    Abstract: An abrasive tape is supplied to a tape head by a tape supply unit and taken up from the tape head by a tape take-up unit. The tape head presses the abrasive tape against a surface of an object under polish, which is rotated by a rotating unit. A tape head pressuring unit utilizes a voice coil motor, for example. Since the tape head pressuring unit generates a pressuring force for pressuring the tape head using the electromagnetic force, it is able to set a minute pressuring force by controlling a drive signal, and to obtain the fine adjustment of the pressuring force easily by controlling the electric signal. Therefore, it becomes possible to press the abrasive tape against the surface of the object under polish with a desired low pressure.
    Type: Grant
    Filed: September 5, 2003
    Date of Patent: May 17, 2005
    Assignee: Hitachi High-Tech Electronics Engineering Co., Ltd.
    Inventors: Fujio Tajima, Hideaki Amano, Teruaki Tokutomi, Takahisa Ishida, Kazuyuki Sonobe, Yasunori Fukuyama, Tsutomu Nagakura, Noritake Shizawa, Takeshi Sato
  • Polishing apparatus with abrasive tape, polishing method using abrasive tape and manufacturing method for magnetic disk
    Publication number: 20040198181
    Abstract: An abrasive tape is supplied to a tape head by a tape supply unit and taken up from the tape head by a tape take-up unit. The tape head presses the abrasive tape against a surface of an object under polish, which is rotated by a rotating unit. A tape head pressuring unit utilizes a vice voice coil motor, for example. Since the tape head pressuring unit generates a pressuring force for pressuring the tape head using the electromagnetic force, it is able to set a minute pressuring force by controlling a drive signal, and to obtain the fine adjustment of the pressuring force easily by controlling the electric signal. Therefore, it becomes possible to press the abrasive tape against the surface of the object under polish with a desired low pressure.
    Type: Application
    Filed: September 5, 2003
    Publication date: October 7, 2004
    Applicant: Hitachi Electronics Engineering Co. Ltd.
    Inventors: Fujio Tajima, Hideaki Amano, Teruaki Tokutomi, Takahisa Ishida, Kazuyuki Sonobe, Yasunori Fukuyama, Tsutomu Nagakura, Noritake Shizawa, Takeshi Sato