Patents by Inventor Satoru Asai
Satoru Asai 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: 20230330784Abstract: A generation laser irradiation device irradiates a weld after welding with a generation laser. A detection laser probe irradiates an ultrasonic detection point that passes through the weld and is capable of detecting an ultrasonic wave reflected on a lower surface of a base material with detection laser. A control device determines existence of an internal defect of the weld based on a measurement result of a laser interferometer. The generation laser irradiation device includes a scanning mechanism that scans an irradiation position of the generation laser in a direction intersecting a welding direction.Type: ApplicationFiled: July 28, 2022Publication date: October 19, 2023Inventors: Satoru Asai, Kazufumi Nomura, Keiji Kadota, Tetsuo Era
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Patent number: 10189105Abstract: The shielding gas for MAG welding according to an embodiment is a shielding gas for MAG welding to perform narrow gap welding of a high Cr steel containing 8 wt % to 13 wt % of Cr with one layer-one pass by using a solid wire containing 8 wt % to 13 wt % of Cr, and the shielding gas for MAG welding comprises a ternary mixed gas of 5% by volume to 17% by volume of a carbon dioxide gas, 30% by volume to 80% by volume of a helium gas, and a balance of an argon gas.Type: GrantFiled: April 4, 2011Date of Patent: January 29, 2019Assignees: TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION, TAIYO NIPPON SANSO CORPORATIONInventors: Yasuhito Kamijo, Satoru Asai, Katsunori Wada, Makoto Takahashi
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Patent number: 9841279Abstract: According to an embodiment, there is provided an apparatus which quantitatively evaluates a braze bonding length. A radiation emission unit emits radiation to each of a plurality of partial specimens which are obtained by cutting a specimen in a plane perpendicular to a braze bonding length direction. A light generator generates light of an amount corresponding to an intensity of transmissive radiation. An imaging unit photographs this light. A calculator calculates a braze bonding length of each of the partial specimens, from a light amount obtained with respect to each of the partial specimens, based on a correlation between a braze bonding length and a light amount. The calculator further calculates the braze bonding length of the specimen by totaling the braze bonding lengths of the respective partial specimens.Type: GrantFiled: March 10, 2016Date of Patent: December 12, 2017Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Ryosuke Ohirabaru, Makoto Takanezawa, Kazuya Segawa, Hideyuki Nakamura, Shigeru Harada, Fumio Sato, Satoru Asai, Akio Sumita, Tooru Ootaka
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Publication number: 20160265909Abstract: According to an embodiment, there is provided an apparatus which quantitatively evaluates a braze bonding length. A radiation emission unit emits radiation to each of a plurality of partial specimens which are obtained by cutting a specimen in a plane perpendicular to a braze bonding length direction. A light generator generates light of an amount corresponding to an intensity of transmissive radiation. An imaging unit photographs this light. A calculator calculates a braze bonding length of each of the partial specimens, from a light amount obtained with respect to each of the partial specimens, based on a correlation between a braze bonding length and a light amount. The calculator further calculates the braze bonding length of the specimen by totaling the braze bonding lengths of the respective partial specimens.Type: ApplicationFiled: March 10, 2016Publication date: September 15, 2016Applicant: Kabushiki Kaisha ToshibaInventors: Ryosuke OHIRABARU, Makoto Takanezawa, Kazuya Segawa, Hideyuki Nakamura, Shigeru Harada, Fumio Sato, Satoru Asai, Akio Sumita, Tooru Ootaka
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Patent number: 9309773Abstract: A steam turbine 3 includes: a turbine rotor 4; a rotor blade 5 implanted to the turbine rotor 4; a stator blade 6 provided at an upstream side of the rotor blade 5; and a turbine casing 13 supporting the stator blade 6 and including the turbine rotor 4, the rotor blade 5 and the stator blade 6, and have a constitution in which a stage 7 is formed by a pair of the rotor blade 5 and the stator blade 6, and a steam passage 8 is formed by arranging plural stages 7 in an axial direction of the turbine rotor 4. A surface treatment to suppress an increase of a surface roughness caused by oxidation is performed for at least a part of a surface of the stator blade 6 and a surface of the rotor blade 5.Type: GrantFiled: December 23, 2010Date of Patent: April 12, 2016Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Akio Sayano, Masashi Takahashi, Masahiro Saito, Kazuyoshi Nakajima, Tadashi Tanuma, Satoru Asai, Kenji Kamimura
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Patent number: 9217731Abstract: A welding inspection method has steps of: generating transmission laser light for generating an ultrasonic wave and transmitting the transmission laser light to an object to be inspected during or after welding operation for irradiation; generating reception laser light for detecting an ultrasonic wave and transmitting the reception laser light to the object to be inspected for irradiation; collecting laser light scattered and reflected at surface of the object to be inspected; performing interference measurement of the laser light and obtaining an ultrasonic signal; and analyzing the ultrasonic signal obtained by the interference measurement. At least one of the transmission laser light generated in the transmission laser light irradiation step and the reception laser light generated in the reception laser light irradiation step is irradiated onto a welded metal part or a groove side surface.Type: GrantFiled: May 19, 2011Date of Patent: December 22, 2015Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Setsu Yamamoto, Takahiro Miura, Takeshi Hoshi, Tsuyoshi Ogawa, Yoshihiro Fujita, Shozo Hirano, Kazumi Watanabe, Satoshi Nagai, Masahiro Yoshida, Satoru Asai, Makoto Ochiai, Jun Semboshi
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Publication number: 20150244225Abstract: A method of manufacturing a rotor coil of to an embodiment includes preparing a wire strand bundling a plurality of wires and a reinforcing member configured to reinforce the wire strand; arranging the wire strand and the reinforcing member to bring an end of the wire strand and an end of the reinforcing member into contact with each other, the wire strand being arranged to have a longitudinal direction perpendicular to a boundary between the wire strand and the reinforcing member and to include the plurality of wires with an inclined longitudinal direction thereof on a first outer surface inclining with respect to the longitudinal direction of the wire strand; rotary driving a tool at the boundary on the first outer surface so as to enter the boundary; and moving the rotary driven tool on the boundary along the first outer surface.Type: ApplicationFiled: February 5, 2015Publication date: August 27, 2015Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Tomoaki Ohashi, Satoru Asai, Yoshihiro Fujita, Oki Osada, Satsumi Ishikawa, Junji Mori, Takashi Fujita, Terumasa Nagasaki
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Publication number: 20150176926Abstract: A heat exchanger of an embodiment includes: a first and a second base metal, at least one of the base metal being made of stainless steel; and a joining part joining the first and second metals, including 92 mass % or more of Ni, and formed by MIG welding.Type: ApplicationFiled: March 10, 2015Publication date: June 25, 2015Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Satoru ASAI, Hiroyuki TAKEBAYASHI, Yoshihiro FUJITA
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Patent number: 8553198Abstract: In view of realizing a lithographic process which makes it possible to estimate and correct flare with an extremely high accuracy, and causes only an extremely small dimensional variation in width, over the entire portion not only of a single shot region, but also of a single chip region, a mask pattern correction device of the present invention has a numerical aperture calculation unit calculating, for every single shot region, flare energy for a mask pattern corresponding to a transferred pattern, based on an exposure layout of a plurality of shot regions, or more specifically, while considering flare from a plurality of shot regions located around every single shot region.Type: GrantFiled: June 4, 2012Date of Patent: October 8, 2013Assignee: Fujitsu Semiconductor LimitedInventors: Teruyoshi Yao, Satoru Asai, Morimi Osawa, Hiromi Hoshino, Kouzou Ogino, Kazumasa Morishita
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Patent number: 8409786Abstract: Double exposure is performed by using a pair of photomasks, an attenuated phase shift mask or the like which is not an alternating phase shift mask, and a pattern is transferred onto a photoresist. Here, on the occasion of performing exposure with the photomask for forming a finer pattern, double pole illumination is used as an illumination system.Type: GrantFiled: August 31, 2007Date of Patent: April 2, 2013Assignee: Fujitsu Semiconductor LimitedInventors: Tomohiko Yamamoto, Satoru Asai
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Publication number: 20120236279Abstract: In view of realizing a lithographic process which makes it possible to estimate and correct flare with an extremely high accuracy, and causes only an extremely small dimensional variation in width, over the entire portion not only of a single shot region, but also of a single chip region, a mask pattern correction device of the present invention has a numerical aperture calculation unit calculating, for every single shot region, flare energy for a mask pattern corresponding to a transferred pattern, based on an exposure layout of a plurality of shot regions, or more specifically, while considering flare from a plurality of shot regions located around every single shot region.Type: ApplicationFiled: June 4, 2012Publication date: September 20, 2012Applicant: FUJITSU SEMICONDUCTOR LTDInventors: Teruyoshi YAO, Satoru Asai, Morimi Osawa, Hiromi Hoshino, Kouzou Ogino, Kazumasa Morishita
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Patent number: 8227153Abstract: In view of realizing a lithographic process which makes it possible to estimate and correct flare with an extremely high accuracy, and causes only an extremely small dimensional variation in width, over the entire portion not only of a single shot region, but also of a single chip region, a mask pattern correction device of the present invention has a numerical aperture calculation unit calculating, for every single shot region, flare energy for a mask pattern corresponding to a transferred pattern, based on an exposure layout of a plurality of shot regions, or more specifically, while considering flare from a plurality of shot regions located around every single shot region.Type: GrantFiled: April 26, 2010Date of Patent: July 24, 2012Assignee: Fujitsu Semiconductor LimitedInventors: Teruyoshi Yao, Satoru Asai, Morimi Osawa, Hiromi Hoshino, Kouzou Ogino, Kazumasa Morishita
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Publication number: 20120094144Abstract: Capabilities of suppressing erosion caused by liquid droplets and achieving a short operation period and cost reduction are provided. A build-up welding method for a structural material used in an erosive environment includes: removing a portion exposed to the erosive environment from the structural material; and forming a hard layer in a portion of the structural material, from which the portion exposed to the erosive environment is removed, the hard layer being formed by short circuiting transfer gas metal arc welding using a solid wire with a hardness of HV 400 or more.Type: ApplicationFiled: October 13, 2011Publication date: April 19, 2012Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Kenji Kamimura, Satoru Asai, Tadashi Kondo, Tsuguhisa Tashima
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Patent number: 8105023Abstract: A steam turbine has: a casing; a rotor rotatably arranged in the casing; a nozzle diaphragm concentrically arranged with respect to the rotor, the nozzle diaphragm being engaged with the casing; moving blades arranged in circumferential direction on outer circumference of the rotor at positions adjacent to the nozzle diaphragm; seal strips circumferentially extending on tips of the moving blades, the seal strips protruding in radial outward direction; and an abradable structure rigidly connected to the nozzle diaphragm. The abradable structure faces the seal strips in radial direction at a facing surface, and has an abradable part made of an abradable material arranged at the facing surface.Type: GrantFiled: January 2, 2008Date of Patent: January 31, 2012Assignee: Kabushiki Kaisha ToshibaInventors: Kazutaka Ikeda, Takashi Sasaki, Satoru Asai, Hitoshi Sakakida, Kenji Kamimura, Ryohei Ogino, Yasushi Ooishi
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Publication number: 20110284508Abstract: A welding system has: a welding mechanism, a reception laser light source, a reception optical mechanism, an interferometer, a data recording/analysis mechanism and a data recording/analysis mechanism. The reception laser light source generates reception laser light so as to irradiate the object to be welded with the reception laser light for the purpose of detecting a reflected ultrasonic wave obtained as a result of reflection of a transmission ultrasonic wave. The reception optical mechanism transmits, during or after welding operation, the reception laser light generated from the reception laser light source to the surface of the object to be welded for irradiation while moving, together with the welding mechanism, relative to the object to be welded and collects laser light scattered/reflected at the surface of the object to be welded.Type: ApplicationFiled: May 19, 2011Publication date: November 24, 2011Inventors: Takahiro Miura, Setsu Yamamoto, Takeshi Hoshi, Tsuyoshi Ogawa, Yoshihiro Fujita, Shozo Hirano, Kazumi Watanabe, Satoshi Nagai, Masahiro Yoshida, Jun Semboshi, Satoru Asai, Makoto Ochiai
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Publication number: 20110286005Abstract: A welding inspection method has steps of: generating transmission laser light for generating an ultrasonic wave and transmitting the transmission laser light to an object to be inspected during or after welding operation for irradiation; generating reception laser light for detecting an ultrasonic wave and transmitting the reception laser light to the object to be inspected for irradiation; collecting laser light scattered and reflected at surface of the object to be inspected; performing interference measurement of the laser light and obtaining an ultrasonic signal; and analyzing the ultrasonic signal obtained by the interference measurement. At least one of the transmission laser light generated in the transmission laser light irradiation step and the reception laser light generated in the reception laser light irradiation step is irradiated onto a welded metal part or a groove side surface.Type: ApplicationFiled: May 19, 2011Publication date: November 24, 2011Inventors: Setsu YAMAMOTO, Takahiro Miura, Takeshi Hoshi, Tsuyoshi Ogawa, Yoshihiro Fujita, Shozo Hirano, Kazumi Watanabe, Satoshi Nagai, Masahiro Yoshida, Satoru Asai, Makoto Ochiai, Jun Semboshi
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Publication number: 20110250472Abstract: The shielding gas for MAG welding according to an embodiment is a shielding gas for MAG welding to perform narrow gap welding of a high Cr steel containing 8 wt % to 13 wt % of Cr with one layer-one pass by using a solid wire containing 8 wt % to 13 wt % of Cr, and the shielding gas for MAG welding comprises a ternary mixed gas of 5% by volume to 17% by volume of a carbon dioxide gas, 30% by volume to 80% by volume of a helium gas, and a balance of an argon gas.Type: ApplicationFiled: April 4, 2011Publication date: October 13, 2011Applicants: TAIYO NIPPON SANSO CORPORATION, KABUSHIKI KAISHA TOSHIBAInventors: Yasuhito KAMIJO, Satoru ASAI, Katsunori WADA, Makoto TAKAHASHI
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Patent number: 7971160Abstract: A method for creating a pattern on a photomask includes steps of recognizing a space between main patterns by using pattern data which indicate the main patterns to be adjacently transferred onto a wafer, determining a 1st rule about arrangement of an assist pattern on the photomask, the assist pattern being adjacent to the main patterns and not being transferred onto the wafer, estimating a depth of focus in the presence of the assist pattern among the main patterns, determining a 2nd rule about arrangement of the assist pattern on the photomask to improve the depth of focus in the presence of the 1st assist pattern among the main patterns in a group having one or more number of appearance times of the space between main patterns, and correcting the assist pattern on the photomask using the assist pattern data on the basis of the 2nd rule.Type: GrantFiled: January 22, 2008Date of Patent: June 28, 2011Assignee: Fujitsu Semiconductor LimitedInventors: Morimi Osawa, Takayoshi Minami, Satoru Asai
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Publication number: 20110150641Abstract: A steam turbine 3 includes: a turbine rotor 4; a rotor blade 5 implanted to the turbine rotor 4; a stator blade 6 provided at an upstream side of the rotor blade 5; and a turbine casing 13 supporting the stator blade 6 and including the turbine rotor 4, the rotor blade 5 and the stator blade 6, and have a constitution in which a stage 7 is formed by a pair of the rotor blade 5 and the stator blade 6, and a steam passage 8 is formed by arranging plural stages 7 in an axial direction of the turbine rotor 4. A surface treatment to suppress an increase of a surface roughness caused by oxidation is performed for at least a part of a surface of the stator blade 6 and a surface of the rotor blade 5.Type: ApplicationFiled: December 23, 2010Publication date: June 23, 2011Applicant: Kabushiki Kaisha ToshibaInventors: Akio SAYANO, Masashi Takahashi, Masahiro Saito, Kazuyoshi Nakajima, Tadashi Tanuma, Satoru Asai, Kenji Kamimura
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Publication number: 20100209834Abstract: In view of realizing a lithographic process which makes it possible to estimate and correct flare with an extremely high accuracy, and causes only an extremely small dimensional variation in width, over the entire portion not only of a single shot region, but also of a single chip region, a mask pattern correction device of the present invention has a numerical aperture calculation unit calculating, for every single shot region, flare energy for a mask pattern corresponding to a transferred pattern, based on an exposure layout of a plurality of shot regions, or more specifically, while considering flare from a plurality of shot regions located around every single shot region.Type: ApplicationFiled: April 26, 2010Publication date: August 19, 2010Applicant: FUJITSU SEMICONDUCTOR LTD.Inventors: Teruyoshi YAO, Satoru ASAI, Morimi OSAWA, Hiromi HOSHINO, Kouzou OGINO, Kazumasa MORISHITA