Patents by Inventor Kiyotaka Sasaki

Kiyotaka Sasaki 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: 10723651
    Abstract: Provided is a method of manufacturing a tempered glass sheet that has been tempered by an ion exchange process, the method including: a film forming step of covering a surface of an original glass sheet with an ion permeation suppressing film configured to suppress permeation of an alkali metal ion, to thereby provide a glass sheet with a film; a processing step of subjecting, after the film forming step, the glass sheet with a film to at least any one of cutting processing, end-surface processing, and hole-opening processing, to thereby provide a glass sheet to be tempered including an exposed portion free from being covered with the ion permeation suppressing film; and a tempering step of chemically tempering, after the processing step, the glass sheet to be tempered by the ion exchange process to provide a tempered glass sheet.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: July 28, 2020
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Mutsumu Fukada, Toshiyuki Kajioka, Kiyotaka Kinoshita, Hiroshi Sasaki
  • Publication number: 20200156993
    Abstract: Provided is a tempered glass sheet, including: a compressive stress layer having a compressive stress of 20 MPa or more continuously from a main surface in a depth direction thereof; a tensile stress layer that is arranged on an inner side with respect to the compressive stress layer in a sheet thickness direction and has a tensile stress of 20 MPa or more continuously in a depth direction thereof; and a stress-neutral layer arranged between the compressive stress layer and the tensile stress layer, wherein the stress-neutral layer has a compressive stress of less than 20 MPa and/or a tensile stress of less than 20 MPa continuously in the sheet thickness direction, and has a thickness of 5.3% or more of a sheet thickness.
    Type: Application
    Filed: July 19, 2018
    Publication date: May 21, 2020
    Applicant: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Kiyotaka KINOSHITA, Hiroshi SASAKI
  • Publication number: 20160253111
    Abstract: According to one embodiment, a storage device is provided which includes a control unit configured to, in case that first data coincides with third data out of second data of a second size greater than the first size stored on a storage medium, do not write fourth data obtained by replacing the third data included in the second data with the first data onto the storage medium.
    Type: Application
    Filed: June 16, 2015
    Publication date: September 1, 2016
    Inventors: Minoru Yamamoto, Masakazu Kitahara, Kiyotaka Sasaki, Seiji Inamura
  • Patent number: 9070417
    Abstract: According to one embodiment, a controller of a magnetic disk device starts to receive first data specified in a first write command from a host, and starts to write the first data to a disk in accordance with the first write command. The controller reports a status for execution of the first write command to the host depending on whether or not a second capacity of data not yet written to the disk is less than or equal to a first capacity of a first free space in a nonvolatile cache. The first free space is available to save data during a first period when a backup power supply enables power to be supplied. The second capacity decreases as writing of the first data to the disk progresses.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: June 30, 2015
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yasuyuki Nagashima, Masakazu Kitahara, Kiyotaka Sasaki, Michihiko Umeda
  • Publication number: 20150026427
    Abstract: A data reassign method in an embodiment includes: when a reassign command specifying a first logical sector that is included in a first physical sector and that has not been specified yet by the reassign command is received, reassigning data in the first physical sector to a second physical sector different from the first physical sector; and refraining thereafter from reassigning data in the second physical sector until occurrence of either re-receipt of the reassign command for the first logical sector or second-time or later receipt of a reassign command for a second logical sector other than the first logical sector included in the second physical sector.
    Type: Application
    Filed: September 13, 2013
    Publication date: January 22, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Seiji Toda, Kiyotaka Sasaki
  • Patent number: 8879181
    Abstract: According to one embodiment, a read/write apparatus includes a receiver and a refresh module. The receiver receives a write command requesting a write to a magnetic disk. The refresh module refreshes, when a first area of the magnetic disk includes a second area corresponding to the write command, data written in a third area, the third area being an area obtained by excluding the second area from the first area.
    Type: Grant
    Filed: January 7, 2013
    Date of Patent: November 4, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Seiji Toda, Michio Yamamoto, Masakazu Kitahara, Masataka Shitara, Takumi Kakuya, Kiyotaka Sasaki, Isao Fujita, Satoru Adachi, Kenji Inoue, Nobuhiro Sugawara, Hironori Kanno
  • Publication number: 20140071559
    Abstract: According to one embodiment, a read/write apparatus includes a receiver and a refresh module. The receiver receives a write command requesting a write to a magnetic disk. The refresh module refreshes, when a first area of the magnetic disk includes a second area corresponding to the write command, data written in a third area, the third area being an area obtained by excluding the second area from the first area.
    Type: Application
    Filed: January 7, 2013
    Publication date: March 13, 2014
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Seiji TODA, Michio YAMAMOTO, Masakazu KITAHARA, Masataka SHITARA, Takumi KAKUYA, Kiyotaka SASAKI, Isao FUJITA, Satoru ADACHI, Kenji INOUE, Nobuhiro SUGAWARA, Hironori KANNO
  • Patent number: 7633695
    Abstract: To provide a medium scan method which can be executed for a suitable region at suitable timing, a disk device comprises a storage medium for storing information, a writing unit for writing information to the storage medium by request from an upper device such as a host computer or the like, a medium monitoring unit for monitoring the state of the storage medium, and a medium scan determining unit for determining whether or not to require medium scan for the storage medium.
    Type: Grant
    Filed: June 16, 2006
    Date of Patent: December 15, 2009
    Assignee: Fujitsu Limited
    Inventors: Yasuyuki Nagashima, Keiichi Yorimitsu, Kiyotaka Sasaki
  • Patent number: 7529027
    Abstract: In a rod lens array having a structure in which a plurality of rod lens elements are arranged between two side panels and a resin is filled and cured in spaces between the rod lens elements to be integrally formed, the side panels are made of a glass fiber reinforced epoxy resin and a phenol-based curing agent is used as a curing agent of the epoxy resin. In detail, the curing agent is exemplified by a phenol-based curing agent including a tris-hydroxyphenyl-methane skeleton.
    Type: Grant
    Filed: April 28, 2006
    Date of Patent: May 5, 2009
    Assignee: Nippon Sheet Glass Company, Ltd.
    Inventor: Kiyotaka Sasaki
  • Publication number: 20070211363
    Abstract: To provide a medium scan method which can be executed for a suitable region at suitable timing, a disk device comprises a storage medium for storing information, a writing unit for writing information to the storage medium by request from an upper device such as a host computer or the like, a medium monitoring unit for monitoring the state of the storage medium, and a medium scan determining unit for determining whether or not to require medium scan for the storage medium.
    Type: Application
    Filed: June 16, 2006
    Publication date: September 13, 2007
    Inventors: Yasuyuki Nagashima, Keiichi Yorimitsu, Kiyotaka Sasaki
  • Publication number: 20060245064
    Abstract: In a rod lens array having a structure in which a plurality of rod lens elements are arranged between two side panels and a resin is filled and cured in spaces between the rod lens elements to be integrally formed, the side panels are made of a glass fiber reinforced epoxy resin and a phenol-based curing agent is used as a curing agent of the epoxy resin. In detail, the curing agent is exemplified by a phenol-based curing agent including a tris-hydroxyphenyl-methane skeleton.
    Type: Application
    Filed: April 28, 2006
    Publication date: November 2, 2006
    Inventor: Kiyotaka Sasaki
  • Patent number: 6943954
    Abstract: An aligning tool having a plurality of grooves formed side by side is provided; gradient index rod lenses are placed in alignment within the grooves at an average spacing of 1 ?m-5 ?m; the gradient index rod lenses are fixed to form an integral unit as they maintain the aligned state; thereafter the end faces of each rod lens are polished.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: September 13, 2005
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Shuya Ogi, Takashi Fukuzawa, Koichiro Iki, Masahide Wakisaka, Kiyotaka Sasaki
  • Patent number: 6900144
    Abstract: A film-forming surface reforming method includes the steps of bringing a gas or an aqueous solution containing ammonia, hydrazine, an amine, an amino compound or a derivative thereof into contact with the film-forming surface before an insulating film is formed on the film-forming surface, and bringing a gas or an aqueous solution containing Hydrogen peroxide, ozone, Oxygen, nitric acid, sulfuric acid or a derivative thereof into contact with the film-forming surface.
    Type: Grant
    Filed: March 15, 2001
    Date of Patent: May 31, 2005
    Assignees: Canon Sales Co., Inc., Semiconductor Process Laboratory Co., Ltd.
    Inventors: Kazuo Maeda, Setsu Suzuki, Takayoshi Azumi, Kiyotaka Sasaki
  • Patent number: 6809868
    Abstract: An aligning tool having a plurality of grooves formed side by side is provided; gradient index rod lenses are placed in alignment within the grooves at an average spacing of 1 &mgr;m-5 &mgr;m; the gradient index rod lenses are fixed to form an integral unit as they maintain the aligned state; thereafter the end faces of each rod lens are polished.
    Type: Grant
    Filed: April 8, 2003
    Date of Patent: October 26, 2004
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Shuya Ogi, Takashi Fukuzawa, Koichiro Iki, Masahide Wakisaka, Kiyotaka Sasaki
  • Patent number: 6714373
    Abstract: A magnetic disk device has an improved seek control in which a waiting time occurred in a first magnetic head while it is scanning a first track, is utilized efficiently and effectively by activating a second magnetic head such that the second magnetic head scans a second track during the waiting time of the first magnetic head.
    Type: Grant
    Filed: June 26, 2000
    Date of Patent: March 30, 2004
    Assignee: Fujitsu Limited
    Inventor: Kiyotaka Sasaki
  • Publication number: 20030193721
    Abstract: An aligning tool having a plurality of grooves formed side by side is provided; gradient index rod lenses are placed in alignment within the grooves at an average spacing of 1 &mgr;m-5 &mgr;m; the gradient index rod lenses are fixed to form an integral unit as they maintain the aligned state; thereafter the end faces of each rod lens are polished.
    Type: Application
    Filed: April 8, 2003
    Publication date: October 16, 2003
    Inventors: Shuya Ogi, Takashi Fukuzawa, Koichiro Iki, Masahide Wakisaka, Kiyotaka Sasaki
  • Patent number: 6432328
    Abstract: In a method for forming a planar microlens according to the present invention, a wet etching is conducted to a glass substrate for a stamper while it is covered with a mask. After the etching is conducted and the mask is removed a wet etching is conducted again to the glass substrate to form densely arranged concave portions thereon, and thereby a stamper is obtained. An uncured resin is applied on the forming surface of the stamper, a glass substrate for a planar microlens array (MLA) is pressed thereto, and thereby the uncured resin is formed. The uncured resin is cured by applying an ultraviolet irradiation thereto and the stamper is released therefrom. The resin layer is removed by a reactive ion etching and whereupon the substrate is etched in a form corresponding to the form of the resin layer and whereby an all-glass microlens of high precision is obtained.
    Type: Grant
    Filed: January 10, 2001
    Date of Patent: August 13, 2002
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Kenjiro Hamanaka, Kiyotaka Sasaki, Takashi Tagami
  • Publication number: 20020063968
    Abstract: An aligning tool having a plurality of grooves formed side by side is provided; gradient index rod lenses are placed in alignment within the grooves at an average spacing of 1 &mgr;m-5 &mgr;m; the gradient index rod lenses are fixed to form an integral unit as they maintain the aligned state; thereafter the end faces of each rod lens are polished.
    Type: Application
    Filed: September 28, 2001
    Publication date: May 30, 2002
    Inventors: Shuya Ogi, Takashi Fukuzawa, Koichiro Iki, Masahide Wakisaka, Kiyotaka Sasaki
  • Publication number: 20010029109
    Abstract: There is provided a film-forming surface reforming method that comprises the steps of bringing a gas or an aqueous solution containing ammonia, hydrazine, amine, amino compound or their derivative into contact with a film-forming surface before an insulating film is formed on the film-forming surface of a substrate, and
    Type: Application
    Filed: March 15, 2001
    Publication date: October 11, 2001
    Applicant: CANON SALES CO., and SEMICONDUCTOR PROCESS LABORATORY CO., LTD.
    Inventors: Kazuo Maeda, Setsu Suzuki, Takayoshi Azumi, Kiyotaka Sasaki
  • Publication number: 20010010597
    Abstract: In a method for forming a planar microlens according to the present invention, a wet etching is conducted to a glass substrate for a stamper while it is covered with a mask. After the etching is conducted and the mask is removed a wet etching is conducted again to the glass substrate to form densely arranged concave portions thereon, and thereby a stamper is obtained. An uncured resin is applied on the forming surface of the stamper, a glass substrate for a planar microlens array (MLA) is pressed thereto, and thereby the uncured resin is formed. The uncured resin is cured by applying an ultraviolet irradiation thereto and the stamper is released therefrom. The resin layer is removed by a reactive ion etching and whereupon the substrate is etched in a form corresponding to the form of the resin layer, and whereby an all-glass microlens of high precision is obtained.
    Type: Application
    Filed: January 10, 2001
    Publication date: August 2, 2001
    Inventors: Kenjiro Hamanaka, Kiyotaka Sasaki, Takashi Tagami