Patents by Inventor Kazutaka Murai
Kazutaka Murai 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).
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Patent number: 11827972Abstract: An object of the present invention is to provide an IGZO sputtering target capable of improving uniformity for at least one property selected from the number of microcracks in the structure, the number of pores in the sintered body structure, and surface roughness. The IGZO sputtering target according to the present invention has an oxide sintered body, the oxide sintered body comprising indium (In), gallium (Ga), zinc (Zn) and unavoidable impurities, wherein, on a surface of the oxide sintered body, a lightness difference ?L* satisfies ?L*<3.0, in which the ?L* is obtained by subtracting lightness Lc*at a central portion on the surface from lightness Le* at a position of 10 mm from an end portion to the central portion side on the surface, and wherein the oxide sintered body has a relative density of 97.0% or more.Type: GrantFiled: December 28, 2021Date of Patent: November 28, 2023Assignee: JX Metals CorporationInventors: Yuhei Kuwana, Kozo Osada, Jun Kajiyama, Kazutaka Murai
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Patent number: 11446221Abstract: The present invention provides zinc oxide having excellent infrared blocking ability, high whiteness, and excellent texture during use. The present invention relates to trivalent metal-doped hexagonal plate-shaped zinc oxide having an aspect ratio of 2.5 or greater, the trivalent metal-doped hexagonal plate-shaped zinc oxide having a trivalent metal element content based on the zinc element of 0.15 to 5 mol %, a whiteness of 90 or higher, and a powder spectral reflectance at a wavelength of 1500 nm of 80% or less.Type: GrantFiled: June 8, 2018Date of Patent: September 20, 2022Assignee: Sakai Chemical Industry Co., Ltd.Inventors: Ryohei Yoshida, Mitsuo Hashimoto, Kazutaka Murai
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Publication number: 20220220605Abstract: An object of the present invention is to provide an IGZO sputtering target capable of improving uniformity for at least one property selected from the number of microcracks in the structure, the number of pores in the sintered body structure, and surface roughness. The IGZO sputtering target according to the present invention has an oxide sintered body, the oxide sintered body comprising indium (In), gallium (Ga), zinc (Zn) and unavoidable impurities, wherein, on a surface of the oxide sintered body, a lightness difference ?L* satisfies ?L*<3.0, in which the ?L* is obtained by subtracting lightness Lc*at a central portion on the surface from lightness Le* at a position of 10 mm from an end portion to the central portion side on the surface, and wherein the oxide sintered body has a relative density of 97.0% or more.Type: ApplicationFiled: December 28, 2021Publication date: July 14, 2022Inventors: Yuhei Kuwana, Kozo Osada, Jun Kajiyama, Kazutaka Murai
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Patent number: 11203530Abstract: The present invention provides a method capable of producing hexagonal plate-shaped zinc oxide having a small thickness and a small variation in the particle size. The present invention relates to a method for producing hexagonal plate-shaped zinc oxide, the method including: a step (1) of preparing a slurry mixture containing starting particulate zinc oxide, a zinc acetate solution, and a chloride; and a step (2) of heat aging the slurry mixture obtained in the step (1) at 60° C. to 100° C.Type: GrantFiled: June 8, 2018Date of Patent: December 21, 2021Assignee: Sakai Chemical Industry Co., Ltd.Inventors: Ryohei Yoshida, Mitsuo Hashimoto, Kazutaka Murai
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Publication number: 20200172407Abstract: The present invention provides a method capable of producing hexagonal plate-shaped zinc oxide having a small thickness and a small variation in the particle size. The present invention relates to a method for producing hexagonal plate-shaped zinc oxide, the method including: a step (1) of preparing a slurry mixture containing starting particulate zinc oxide, a zinc acetate solution, and a chloride; and a step (2) of heat aging the slurry mixture obtained in the step (1) at 60° C. to 100° C.Type: ApplicationFiled: June 8, 2018Publication date: June 4, 2020Inventors: Ryohei YOSHIDA, Mitsuo HASHIMOTO, Kazutaka MURAI
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Publication number: 20200129394Abstract: The present invention provides zinc oxide having excellent infrared blocking ability, high whiteness, and excellent texture during use. The present invention relates to trivalent metal-doped hexagonal plate-shaped zinc oxide having an aspect ratio of 2.5 or greater, the trivalent metal-doped hexagonal plate-shaped zinc oxide having a trivalent metal element content based on the zinc element of 0.15 to 5 mol %, a whiteness of 90 or higher, and a powder spectral reflectance at a wavelength of 1500 nm of 80% or less.Type: ApplicationFiled: June 8, 2018Publication date: April 30, 2020Inventors: Ryohei YOSHIDA, Mitsuo HASHIMOTO, Kazutaka MURAI
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Patent number: 7275899Abstract: Machining coolant/lubricant is used to operate a piston of a clamping-side coupler by feeding same via a coolant feed passage to a clamping pressure chamber through a first check valve and a clamping pressure fluid passage. The same coolant/lubricant is discharged from an unclamping pressure chamber through an unclamping pressure fluid passage and a second check valve. The resulting movement of the piston downwards brings a clamp member into contact with a workpiece to thereby clamp the workpiece on a table. Thus, a dedicated pressure source for clamping can be dispensed with.Type: GrantFiled: August 3, 2004Date of Patent: October 2, 2007Assignee: Aisin AW Co., Ltd.Inventors: Takao Taniguchi, Shigeharu Ikeda, Minoru Hidaka, Tomoyoshi Sato, Hiroshi Osada, Takao Kobayashi, Hironao Kinpara, Shigeto Noma, Kazutaka Murai, Masato Sakakibara
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Patent number: 7137940Abstract: Machining is possible in such a manner that an optional position of a workpiece is positioned just under a tool by rotation of a turn table in a C-axis direction, movement of the turn table in a Y-axis direction, and movement of a spindle in a Z-axis direction, so that a width of a main unit in a X-axis direction can be made shorter in comparison with machining by moving the turn table in the X-axis direction. Besides, the turn table located on a front side of the main unit, an ATC located on the rear side thereof, and a separated control panel located on the rear side of the ATC, independent from the main unit can also make the width of a machining center in the X-axis direction shorter.Type: GrantFiled: April 21, 2006Date of Patent: November 21, 2006Assignees: Aisin AW Co., Ltd., Yamazaki Mazak Kabushiki KaishaInventors: Takao Taniguchi, Toshiyuki Andou, Mitsuhiro Yamada, Kazutaka Murai, Yuichiro Yoshimura, Jiro Nishida, Atsushi Kohama, Shigeto Noma, Michio Norimatsu, Seiichi Kodama, Haruhiko Koike
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Patent number: 7103955Abstract: A drill fitted to an adapter is used to drill a hole in a workpiece fixed on a table of a machining center. When the hole drilling is finished, the drill is removed from the adapter, and a workpiece holding jig is fitted to the adapter. Then, the adapter is lowered, and the workpiece holding jig takes the workpiece for which the hole drilling operation has been finished. Following this, the adapter is raised, and the workpiece is temporarily held in the machining center. Then, in this state, the next workpiece is mounted on the table of the machining center. Accordingly, by temporarily holding the workpiece, for which the hole drilling operation has been finished, in the machining center, mounting of the next workpiece is simplified.Type: GrantFiled: July 28, 2004Date of Patent: September 12, 2006Assignee: Aisin AW Co., Ltd.Inventors: Kazutaka Murai, Shigeto Noma, Toshiyuki Andou
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Publication number: 20060183611Abstract: Machining is possible in such a manner that an optional position of a workpiece is positioned just under a tool by rotation of a turn table in a C-axis direction and movement of a spindle on a Y-Z plane, so that a width of a main unit in a X-axis direction can be made shorter in comparison with machining by moving the turn table in the X-axis direction. Besides, the turn table located on a front side of the main unit, an ATC located on the rear side thereof, and a separated control panel located on the rear side of the ATC, independent from the main unit can also make the width of a machining center in the X-axis direction shorter.Type: ApplicationFiled: April 21, 2006Publication date: August 17, 2006Inventors: Takao Taniguchi, Toshiyuki Andou, Mitsuhiro Yamada, Kazutaka Murai, Yuichiro Yoshimura, Jiro Nishida, Atsushi Kohama, Shigeto Noma, Michio Norimatsu, Seiichi Kodama, Haruhiko Koike
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Patent number: 7063654Abstract: Machining is possible in such a manner that an optional position of a workpiece is positioned just under a tool by rotation of a turn table in a C-axis direction and movement of a spindle on a Y-Z plane, so that a width of a main unit in a X-axis direction can be made shorter in comparison with machining by moving the turn table in the X-axis direction. Besides, the turn table located on a front side of the main unit, an ATC located on the rear side thereof, and a separated control panel located on the rear side of the ATC, independent from the main unit can also make the width of a machining centre in the X-axis direction shorter.Type: GrantFiled: July 15, 2004Date of Patent: June 20, 2006Assignee: Yamazaki Mazak Kabushiki KaishaInventors: Takao Taniguchi, Toshiyuki Andou, Mitsuhiro Yamada, Kazutaka Murai, Yuichiro Yoshimura, Jiro Nishida, Atsushi Kohama, Shigeto Noma, Michio Norimatsu, Seiichi Kodama, Haruhiko Koike
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Patent number: 7048479Abstract: A machining tool has a tool holder aligned on an axis of rotation ? of its shaft, which axis ? is oblique to the axis of rotation of a spindle at a predetermined angle ?. Accordingly, the machining tool may perform oblique machining of a workpiece. A power transmission mechanism that transmits rotation of the spindle to the machining tool is formed as an attachment to the spindle and includes a rotatable shaft, a second bevel drive gear, a second bevel driven gear, and a feed shaft. Further, a feed mechanism which feeds the machining tool along the axis ? of the rotatable shaft is formed of the attachments, the rotatable shaft; the second bevel drive gear and the second bevel driven gear, a first bevel drive gear a first bevel driven gear, a male screw member, and the feed shaft.Type: GrantFiled: July 7, 2004Date of Patent: May 23, 2006Assignee: Aisin AW Co., Ltd.Inventors: Kazutaka Murai, Nobuaki Shirato
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Publication number: 20050059538Abstract: A drill fitted to an adapter is used to drill a hole in a workpiece fixed on a table of a machining center. When the hole drilling is finished, the drill is removed from the adapter, and a workpiece holding jig is fitted to the adapter. Then, the adapter is lowered, and the workpiece holding jig takes the workpiece for which the hole drilling operation has been finished. Following this, the adapter is raised, and the workpiece is temporarily held in the machining center. Then, in this state, the next workpiece is mounted on the table of the machining center. Accordingly, by temporarily holding the workpiece, for which the hole drilling operation has been finished, in the machining center, mounting of the next workpiece is simplified.Type: ApplicationFiled: July 28, 2004Publication date: March 17, 2005Inventors: Kazutaka Murai, Shigeto Noma, Toshiyuki Andou
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Publication number: 20050036845Abstract: Machining coolant/lubricant is used to operate a piston of a clamping-side coupler by feeding same via a coolant feed passage to a clamping pressure chamber through a first check valve and a clamping pressure fluid passage. The same coolant/lubricant is discharged from an unclamping pressure chamber through an unclamping pressure fluid passage and a second check valve. The resulting movement of the piston downwards brings a clamp member into contact with a workpiece to thereby clamp the workpiece on a table. Thus, a dedicated pressure source for clamping can be dispensed with.Type: ApplicationFiled: August 3, 2004Publication date: February 17, 2005Inventors: Takao Taniguchi, Shigeharu Ikeda, Minoru Hidaka, Tomoyoshi Sato, Hiroshi Osada, Takao Kobayashi, Hironao Kinpara, Shigeto Noma, Kazutaka Murai, Masato Sakakibara
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Publication number: 20050025589Abstract: A machining tool has a tool holder aligned on an axis of rotation ? of its shaft, which axis ? is oblique to the axis of rotation of a spindle at a predetermined angle ?. Accordingly, the machining tool may perform oblique machining of a workpiece. A power transmission mechanism that transmits rotation of the spindle to the machining tool is formed as an attachment to the spindle and includes a rotatable shaft, a second bevel drive gear, a second bevel driven gear, and a feed shaft. Further, a feed mechanism which feeds the machining tool along the axis ? of the rotatable shaft is formed of the attachments, the rotatable shaft; the second bevel drive gear and the second bevel driven gear, a first bevel drive gear a first bevel driven gear, a male screw member, and the feed shaft.Type: ApplicationFiled: July 7, 2004Publication date: February 3, 2005Inventors: Kazutaka Murai, Nobuaki Shirato
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Publication number: 20050014619Abstract: Machining is possible in such a manner that an optional position of a workpiece is positioned just under a tool by rotation of a turn table in a C-axis direction and movement of a spindle on a Y-Z plane, so that a width of a main unit in a X-axis direction can be made shorter in comparison with machining by moving the turn table in the X-axis direction. Besides, the turn table located on a front side of the main unit, an ATC located on the rear side thereof, and a separated control panel located on the rear side of the ATC, independent from the main unit can also make the width of a machining centre in the X-axis direction shorter.Type: ApplicationFiled: July 15, 2004Publication date: January 20, 2005Inventors: Takao Taniguchi, Toshiyuki Andou, Mitsuhiro Yamada, Kazutaka Murai, Yuichiro Yoshimura, Jiro Nishida, Atsushi Kohama, Shigeto Noma, Michio Norimatsu, Seiichi Kodama, Haruhiko Koike