Patents by Inventor Yoshiaki Sakai
Yoshiaki Sakai 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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Publication number: 20230311212Abstract: There is provided a method for manufacturing a turbine component which enables obtaining a single crystal structure more easily and manufacturing a good turbine component. In the seed crystal placing step, the seed crystal is placed on the surface of the base in a manner that a first direction along <001> of the seed crystal has an angle within 15 degrees in absolute value in relation to a laminating direction. In the shaped layer forming step, scanning is performed in a manner that the scan direction has an angle within 20 degrees in absolute value in relation to a second direction being <001> orthogonal to the first direction of the seed crystal.Type: ApplicationFiled: May 24, 2023Publication date: October 5, 2023Applicants: TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION, NATIONAL INSTITUTE FOR MATERIALS SCIENCEInventors: Takehisa HINO, Hiroshi HARADA, Kyoko KAWAGISHI, Toshio OSADA, Tadaharu YOKOKAWA, Yutaka KOIZUMI, Makoto OSAWA, Toru TANAKA, Hideshi NAKANO, Rie SUMIYA, Kazuhiro KITAYAMA, Yoshiaki SAKAI, Akihiro SAKAMOTO
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Patent number: 9200526Abstract: A transition piece 10 in an embodiment is provided with an inner duct 20 through which a combustion gas is led to a turbine part 130 and an outer duct 30 that is provided so as to cover an outer periphery of the inner duct 20 and has a plurality of ejection holes 31 to eject air onto an outer peripheral surface of the inner duct 20 formed therein. It is structured such that a channel cross-sectional area of a cooling air channel 50 that is formed between the inner duct 20 and the outer duct 30 and through which the air ejected from the ejection holes 31 flows gradually decreases at an air flow downstream side rather than the portion where the ejection holes 31 are formed, and gradually increases from a throat portion 60 having the minimized channel cross-sectional area to an air flow downstream side.Type: GrantFiled: December 20, 2011Date of Patent: December 1, 2015Assignee: Kabushiki Kaisha ToshibaInventors: Shoko Ito, Daizo Saito, Yoshiaki Sakai
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Patent number: 9149881Abstract: A damage-repairing method of a transition piece in an embodiment includes; an oxide removing step of removing an oxide on an outer surface 20b of an inner duct 20 of a transition piece 10 having damage; a repair material placing step of placing a brazing repair material 80 on the outer surface 20b of the inner duct 20 so as to cover the damage; and a diffusion brazing step of diffusion heat treating the inner duct 20 to repair the damage formed in the outer surface 20b. The damage-repairing method of the transition piece includes: a pressurized heat treating step of, under high pressure, heat treating the inner duct 20; a surface finishing step of scraping off the brazing repair material 80 projecting from the outer surface 20b; and a non-pressurized heat treating step of solution heat treating and aging heat treating the inner duct 20 under non-pressure.Type: GrantFiled: January 20, 2012Date of Patent: October 6, 2015Assignee: Kabushiki Kaisha ToshibaInventors: Shoko Ito, Daizo Saito, Yoshiaki Sakai
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Patent number: 8761637Abstract: An attaching and detaching body includes: a main body of the attaching and detaching body that is attached to a to-be attached and detached apparatus; a memory that stores information concerning the attaching and detaching body; a memory support section that is provided in the main body of the attaching and detaching body and that supports the memory; and a restriction body that is attached to the main body of the attaching and detaching body and that, when attached to the main body of the attaching and detaching body, is arranged on a locus along which the memory departs from the memory support section.Type: GrantFiled: May 5, 2011Date of Patent: June 24, 2014Assignee: Fuji Xerox Co., Ltd.Inventor: Yoshiaki Sakai
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Patent number: 8594539Abstract: An image forming apparatus includes: an inlet connected to an outlet of a container body for developer; a leakage preventing member arranged in the surroundings of the inlet and preventing leakage of the developer; and recesses that are arranged on an upstream side and a downstream side of the outlet with reference to the direction of movement that the developer container body moves when the developer container body is moved in a state that the developer container body is supported by a container support section and that are formed in a shape depressed in a direction of departing relative to an opening and closing member for opens and closes the outlet, the recesses collecting developer having adhered to the leakage preventing member when the developer container body is moved.Type: GrantFiled: April 19, 2011Date of Patent: November 26, 2013Assignee: Fuji Xerox Co., Ltd.Inventor: Yoshiaki Sakai
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Publication number: 20120186254Abstract: A damage-repairing method of a transition piece in an embodiment includes; an oxide removing step of removing an oxide on an outer surface 20b of an inner duct 20 of a transition piece 10 having damage; a repair material placing step of placing a brazing repair material 80 on the outer surface 20b of the inner duct 20 so as to cover the damage; and a diffusion brazing step of diffusion heat treating the inner duct 20 to repair the damage formed in the outer surface 20b. The damage-repairing method of the transition piece includes: a pressurized heat treating step of, under high pressure, heat treating the inner duct 20; a surface finishing step of scraping off the brazing repair material 80 projecting from the outer surface 20b; and a non-pressurized heat treating step of solution heat treating and aging heat treating the inner duct 20 under non-pressure.Type: ApplicationFiled: January 20, 2012Publication date: July 26, 2012Inventors: Shoko Ito, Daizo Saito, Yoshiaki Sakai
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Publication number: 20120159954Abstract: A transition piece 10 in an embodiment is provided with an inner duct 20 through which a combustion gas is led to a turbine part 130 and an outer duct 30 that is provided so as to cover an outer periphery of the inner duct 20 and has a plurality of ejection holes 31 to eject air onto an outer peripheral surface of the inner duct 20 formed therein. It is structured such that a channel cross-sectional area of a cooling air channel 50 that is formed between the inner duct 20 and the outer duct 30 and through which the air ejected from the ejection holes 31 flows gradually decreases at an air flow downstream side rather than the portion where the ejection holes 31 are formed, and gradually increases from a throat portion 60 having the minimized channel cross-sectional area to an air flow downstream side.Type: ApplicationFiled: December 20, 2011Publication date: June 28, 2012Inventors: Shoko Ito, Daizo Saito, Yoshiaki Sakai
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Publication number: 20120099892Abstract: An attaching and detaching body includes: a main body of the attaching and detaching body that is attached to a to-be attached and detached apparatus; a memory that stores information concerning the attaching and detaching body; a memory support section that is provided in the main body of the attaching and detaching body and that supports the memory; and a restriction body that is attached to the main body of the attaching and detaching body and that, when attached to the main body of the attaching and detaching body, is arranged on a locus along which the memory departs from the memory support section.Type: ApplicationFiled: May 5, 2011Publication date: April 26, 2012Applicant: FUJI XEROX CO., LTD.Inventor: Yoshiaki SAKAI
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Publication number: 20120099901Abstract: An image forming apparatus includes: an inlet connected to an outlet of a container body for developer; a leakage preventing member arranged in the surroundings of the inlet and preventing leakage of the developer; and recesses that are arranged on an upstream side and a downstream side of the outlet with reference to the direction of movement that the developer container body moves when the developer container body is moved in a state that the developer container body is supported by a container support section and that are formed in a shape depressed in a direction of departing relative to an opening and closing member for opens and closes the outlet, the recesses collecting developer having adhered to the leakage preventing member when the developer container body is moved.Type: ApplicationFiled: April 19, 2011Publication date: April 26, 2012Applicant: FUJI XEROX CO., LTD.Inventor: Yoshiaki SAKAI
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Publication number: 20120000890Abstract: A method for repairing gas turbine blades includes: a thickness-reduced portion removing step S101 of working a surface of a blade tip 10a into a flat surface 13 by removing a thickness-reduced portion 12 of the blade tip 10a; a build-up welding step S102 of forming a built-up portion 14 with a predetermined thickness by melting powder of a build-up material higher in ductility than a base material forming the gas turbine blade 10 by a laser beam and building up the melted powder in multiple layers on the blade tip 10a whose surface is worked into the flat surface 13; a forming step S103 of working the built-up portion 14 into the same shape as a shape that the blade tip 10a originally has before suffering a thickness loss; and a heat-treatment step S104 of removing a residual strain caused by laser welding in the build-up welding step S102.Type: ApplicationFiled: June 13, 2011Publication date: January 5, 2012Inventors: Shoko ITO, Takehisa HINO, Yoshiaki SAKAI
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Publication number: 20090242418Abstract: The present invention provides a coating method, in which a composite coating layer is formed on a surface of an alloy base member by utilizing a rotary electrode device. The coating method includes the steps of: preparing an electrolytic solution containing A ion wherein A is Co or Ni; preparing a MCrAlY powder wherein M denotes at least one element selected from the group consisting of Ni and Co, and the MCrAlY powder contains at least Ni when A is Co or the MCrAlY powder contains at least Co when A is Ni; preparing a dispersion liquid by dispersing the MCrAlY powder into the electrolytic solution; immerging the cylindrical rotary electrode and the alloy base member into the dispersion liquid; and electrolyzing the surface of the alloy base member while the cylindrical rotary electrode covered with the nonwoven fabric layer is rolled on the on the surface of the alloy base member thereby to form the composite coating layer onto the surface of the alloy base member.Type: ApplicationFiled: March 24, 2009Publication date: October 1, 2009Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Masahiro Saito, Yomei Yoshioka, Kazuhiro Kitayama, Hiroaki Okamoto, Yoshiaki Sakai
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Publication number: 20060257653Abstract: The present invention provides a fiber or fiber product comprising an artificial fiber and filler incorporated therein, the filler being a filler whose own color changes or a filler mixture whose entire color appears to change by irradiation with a laser beam. The filler whose own color changes by irradiation with a laser beam is preferably barium sulfate or diantimony. The filler is usually in the form of particles with a mean particle diameter of not more than about 15 ?m. When the fiber or fiber product of the invention is irradiated with a laser beam, the fiber changes color in the irradiated portion, so that a minute mark can be produced on the individual spun yarns or filament yarns of the fiber or fiber product.Type: ApplicationFiled: May 14, 2004Publication date: November 16, 2006Inventors: Yutaka Tsujimoto, Yoshiaki Sakai, Frédéric Loyrion
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Patent number: 6097576Abstract: A miniaturized magnetic head which can reduce running torque of a disk driving motor while head-touch and penetration margin of the magnetic head remain effective. The magnetic head comprises a slider which slides on a flexible magnetic disk, a head core, integrally formed with the slider, to perform recording/reproducing of information on/from the flexible magnetic disk, and a groove, having a width of less than 0.4 mm, formed on a sliding surface of the slider, the groove extending in a tangential direction of the rotation of the flexible magnetic disk and reaching from one end of the slider to the other end of the slider.Type: GrantFiled: February 2, 1995Date of Patent: August 1, 2000Assignee: Teac CorporationInventors: Kiyoshi Fukuchi, Fumio Nagase, Yoshiaki Sakai
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Patent number: 5855624Abstract: The present invention relates to cellulose fibers excellent in dirt removability and a method of treatment thereof. The cellulose fibers of the invention are liquid ammonia-treated cellulose fibers whose partial or entire exterior is coated with an ester of (A) a polycarboxylic acid having at least three carboxyl groups and (B) a hydrophilic polyol having an oxyethylene group or groups and at least two alcoholic hydroxyl groups and/or which fibers are impregnated with the ester.Type: GrantFiled: April 16, 1997Date of Patent: January 5, 1999Assignee: New Japan Chemical Co., Ltd.Inventors: Kango Fujitani, Yoko Fukuyama, Toshio Watanuki, Hiroyuki Miura, Yutaka Tsujimoto, Kazuhisa Honda, Yoshitaka Uno, Yoshiaki Sakai
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Patent number: 5583711Abstract: A method of writing on a two-reel, belt driven, multitrack tape cartridge wherein tape tension increases with the progress of tape transportation from one reel to another. Forward tracks on the tape are predivided into a first group adjacent the tape centerline and a second group adjacent one tape edge, and reverse tracks are similarly predivided into a first and a second group. Writing on each of the first group of forward tracks is started in a position spaced a less distance from the tape beginning than on each of the second group of forward tracks. Writing on each of the first group of reverse tracks is also started in a position spaced a less distance from the tape end than on each of the second group of reverse tracks. Thus the tape offers a greater storage capacity than if, as is conventional in the art, writing on the first groups of forward and reverse tracks is started in the same longitudinal tape position as on the second groups of forward and reverse tracks.Type: GrantFiled: February 21, 1995Date of Patent: December 10, 1996Assignee: TEAC CorporationInventors: Hiroshi Ohkubo, Shinzi Umehara, Mitsuru Hasegawa, Mitsutoshi Kondo, Yoshiaki Sakai
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Patent number: 5442608Abstract: A disk apparatus comprising a controller receiving commands from a command input device and controlling an entire operation of the disk apparatus. The rotating control function is coupled to the controller for controlling the first motor. The pickupmotor control function is coupled to the controller for controlling the second motor. The pickup control function is coupled to the controller for controlling a focusing operation and a tracking operation of the pickup. And the signal processing function is coupled to the controller for processing a recording signal to be recorded on the disk-shaped recording medium and a reproduced signal read out therefrom. The controller is comprised function-stop function for determining whether or not any command is received from the command input device during a predetermined period of time in a state.Type: GrantFiled: March 4, 1994Date of Patent: August 15, 1995Assignees: Mitsubishi Electric Corp, TEAC CorporationInventors: Yoshiaki Umeda, Teruo Furukawa, Masaharu Ogawa, Kazuhiko Nakane, Akira Mashimo, Tetsuro Araki, Hiroyuki Onda, Yoshiaki Sakai, Hiroshi Tsuyuguchi, Katsuya Enami
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Patent number: D648780Type: GrantFiled: April 20, 2011Date of Patent: November 15, 2011Assignee: Fuji Xerox Co., Ltd.Inventors: Yoshiaki Sakai, Kazuhiro Saito
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Patent number: D648781Type: GrantFiled: April 21, 2011Date of Patent: November 15, 2011Assignee: Fuji Xerox Co., Ltd.Inventors: Yoshiaki Sakai, Kazuhiro Saito
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Patent number: D651643Type: GrantFiled: April 20, 2011Date of Patent: January 3, 2012Assignee: Fuji Xerox Co., LtdInventor: Yoshiaki Sakai
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Patent number: D652074Type: GrantFiled: April 21, 2011Date of Patent: January 10, 2012Assignee: Fuji Xerox Co., LtdInventors: Yoshiaki Sakai, Kazuhiro Saito