Patents by Inventor Katsuhide Tanaka

Katsuhide Tanaka 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: 20240021215
    Abstract: A multi-slope load/unload ramp for a hard disk drive includes an inner first portion having a non-horizontal first slope and an adjacent outer second portion having a different non-horizontal second slope. The first slope may be steeper than the second slope, and the ramp may further include a third portion adjacent to the second portion and also having a third slope steeper than the second slope, with the ramp configured for positioning the first and second portions to overlap the disk while the third segment may be in part outside the disk. The second slope may be steeper than the first slope, with the ramp configured for positioning the first portion to overlap the disk while the second portion may be in part outside of the disk. Hence, any slider rebound from the steeper portions would occur outside of the disk and avoid a slider-disk crash.
    Type: Application
    Filed: July 13, 2022
    Publication date: January 18, 2024
    Inventors: Taichi Nakamura, Biao Sun, Katsuhide Tanaka
  • Patent number: 11869541
    Abstract: A multi-slope load/unload ramp for a hard disk drive includes an inner first portion having a non-horizontal first slope and an adjacent outer second portion having a different non-horizontal second slope. The first slope may be steeper than the second slope, and the ramp may further include a third portion adjacent to the second portion and also having a third slope steeper than the second slope, with the ramp configured for positioning the first and second portions to overlap the disk while the third segment may be in part outside the disk. The second slope may be steeper than the first slope, with the ramp configured for positioning the first portion to overlap the disk while the second portion may be in part outside of the disk. Hence, any slider rebound from the steeper portions would occur outside of the disk and avoid a slider-disk crash.
    Type: Grant
    Filed: July 13, 2022
    Date of Patent: January 9, 2024
    Assignee: Western Digital Technologies, Inc.
    Inventors: Taichi Nakamura, Biao Sun, Katsuhide Tanaka
  • Patent number: 9230587
    Abstract: Embodiments disclosed herein generally relate to a head slider within disk drive data storage devices. A head slider comprises a head body having a leading portion on a leading edge and a trailing portion on a trailing edge. The leading portion includes a first leading pad disposed at the MFS and a second leading pad disposed between the first leading pad and the leading edge. The second leading pad is recessed a first vertical distance from the MFS. One or more particle trapping holes are disposed between the first leading pad and the second leading pad. The one or more particle trapping holes are recessed a second vertical distance from the MFS, the second vertical distance being greater than the first vertical distance. Particles encountered by the leading portion may be suctioned into the one or more particle trapping holes, preventing the particles from building-up onto the MFS.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: January 5, 2016
    Assignee: HGST NETHERLANDS B.V.
    Inventors: Yong Hu, Weidong Huang, Katsuhide Tanaka
  • Patent number: 8427785
    Abstract: The head-slider is configured to receive an air-stream produced by rotation of a magnetic-recording disk and is configured to fly in proximity with a recording surface of the magnetic-recording disk. The head-slider includes a trailing edge on an outflow side of the air-stream, and a disk-facing surface that is configured to face the recording surface of the magnetic-recording disk. A low-surface-energy film is disposed on a portion of a trailing-edge side of the head-slider that is in contact with a boundary between the trailing edge and the disk-facing surface. The low-surface-energy film has a lower surface energy than other portions of the trailing-edge side where the low-surface-energy film is not disposed.
    Type: Grant
    Filed: December 16, 2009
    Date of Patent: April 23, 2013
    Assignee: HGST Netherlands B.V.
    Inventors: Yoshihiko Ooeda, Kenji Kuroki, Katsuhide Tanaka
  • Patent number: 8028018
    Abstract: A cooperative processing system includes a first data processing component, existing on a first computer, that generates an output containing object having a function of outputting data contained therein to a stream, a pipeline section that causes the output containing object to output the data contained in the output containing object to a stream addressed to a second computer, and causes the second computer to generate an input containing object that receives the stream and stores data transferred through the stream, and a second data processing component, existing on the second computer, that receives the input containing object to perform a data process.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: September 27, 2011
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Shigehisa Kawabe, Setsu Kunitake, Akira Suzuki, Katsuhide Tanaka
  • Patent number: 7912846
    Abstract: There is provided a document processing method in which a document is created by applying one or more templates to multiple structured documents stored in a folder among a group of folders having a hierarchical structure in a document database, the method including acquiring a first structured document including multiple document elements forming a structure, acquiring information of a hierarchical structure of the folders in the document database, creating integrated structure information by merging the structure of the document elements of the first structured document into a position of a folder, in the hierarchical structure formed by the folders, in which the first structured document is stored, and applying a template to the integrated structure information.
    Type: Grant
    Filed: September 21, 2006
    Date of Patent: March 22, 2011
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Shigehisa Kawabe, Setsu Kunitake, Akira Suzuki, Katsuhide Tanaka
  • Publication number: 20110032641
    Abstract: A magnetic head slider comprising: an air inflow end; an air bearing surface; and an air outflow end, the air bearing surface comprising: an inflow side rail face further formed towards the air inflow end than the center of the air bearing surface; an outflow side rail face formed further towards the air outflow end than the inflow side rail face, having a magnetic recording/reproduction element arranged thereon; a negative pressure groove face formed between the inflow side rail face and the outflow side rail face; and a groove face formed between the inflow side rail face and the negative pressure groove face, or between the inflow side rail face and the outflow side rail face; and comprising at least one step structure shallower than the groove face at the slider end in the width direction of the groove face.
    Type: Application
    Filed: August 10, 2010
    Publication date: February 10, 2011
    Inventors: Satoru OOKUBO, Katsuhide Tanaka, Masaki Otsuka, Kiyoshi Hashimoto
  • Publication number: 20100149693
    Abstract: The head-slider is configured to receive an air-stream produced by rotation of a magnetic-recording disk and is configured to fly in proximity with a recording surface of the magnetic-recording disk. The head-slider includes a trailing edge on an outflow side of the air-stream, and a disk-facing surface that is configured to face the recording surface of the magnetic-recording disk. A low-surface-energy film is disposed on a portion of a trailing-edge side of the head-slider that is in contact with a boundary between the trailing edge and the disk-facing surface. The low-surface-energy film has a lower surface energy than other portions of the trailing-edge side where the low-surface-energy film is not disposed.
    Type: Application
    Filed: December 16, 2009
    Publication date: June 17, 2010
    Inventors: Yoshihiko OOEDA, Kenji Kuroki, Katsuhide Tanaka
  • Publication number: 20070130176
    Abstract: There is provided a document processing method in which a document is created by applying one or more templates to multiple structured documents stored in a folder among a group of folders having a hierarchical structure in a document database, the method including acquiring a first structured document including multiple document elements forming a structure, acquiring information of a hierarchical structure of the folders in the document database, creating integrated structure information by merging the structure of the document elements of the first structured document into a position of a folder, in the hierarchical structure formed by the folders, in which the first structured document is stored, and applying a template to the integrated structure information.
    Type: Application
    Filed: September 21, 2006
    Publication date: June 7, 2007
    Inventors: Shigehisa Kawabe, Setsu Kunitake, Akira Suzuki, Katsuhide Tanaka
  • Publication number: 20070011241
    Abstract: A cooperative processing system includes a first data processing component, existing on a first computer, that generates an output containing object having a function of outputting data contained therein to a stream, a pipeline section that causes the output containing object to output the data contained in the output containing object to a stream addressed to a second computer, and causes the second computer to generate an input containing object that receives the stream and stores data transferred through the stream, and a second data processing component, existing on the second computer, that receives the input containing object to perform a data process.
    Type: Application
    Filed: November 29, 2005
    Publication date: January 11, 2007
    Inventors: Shigehisa Kawabe, Setsu Kunitake, Akira Suzuki, Katsuhide Tanaka