Patents by Inventor Hiroaki Fukushima
Hiroaki Fukushima 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: 20240117107Abstract: An object of the present invention is to provide a polyester resin excellent in moldability, surface smoothness, transparency, mechanical characteristics, and heat-resistance, with reduced generation of gel. The present invention relates to a polyester resin comprising a constituent moiety derived from dicarboxylic acid component and a constituent moiety derived from alcohol component, wherein a content of a compound represented by Formula (I) is 0.0002 to 5.9% by weight in 100% by weight of the alcohol component. In the Formula (I), m and n each represent 1 to 1000, 1 represents 0 to 1000, R1 represents an aromatic hydrocarbon group having 6 to 20 carbon atoms, and R2, R3, and R4 each represent a hydrogen atom or an alkyl group having 1 to 10 carbon atoms.Type: ApplicationFiled: December 13, 2021Publication date: April 11, 2024Applicant: TOYOBO MC CorporationInventors: Hironao SASAKI, Keiichiro TOGAWA, Hiroaki FUKUSHIMA
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Method for evaluating crack in metal member and method for evaluating fatigue damage in metal member
Patent number: 11898995Abstract: A method for evaluating a crack in a metal member comprises a first removal step (S10) and a second removal step (S20). In the first removal step (S10), a step for electrolyzing a metal member having an oxide scale formed on a surface thereof, a step for acquiring an image of the oxide scale as a first image, and a step for determining whether or not a scale crack has occurred are repeated until occurrence of a scale crack is determined. In the second removal step (S20), a step for electrolyzing the metal member having the scale crack, a second image acquisition step for acquiring an image of the oxide scale as a second image, and a second determination step for determining whether or not the scale crack has disappeared are repeated until disappearance of the oxide scale is determined.Type: GrantFiled: July 2, 2020Date of Patent: February 13, 2024Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Hiroaki Fukushima, Yuichi Hirakawa, Hiroaki Yoshida, Masahiko Yamashita, Takeo Tokumoto -
METHOD FOR EVALUATING CRACK IN METAL MEMBER AND METHOD FOR EVALUATING FATIGUE DAMAGE IN METAL MEMBER
Publication number: 20220349790Abstract: A method for evaluating a crack in a metal member comprises a first removal step (S10) and a second removal step (S20). In the first removal step (S10), a step for electrolyzing a metal member having an oxide scale formed on a surface thereof, a step for acquiring an image of the oxide scale as a first image, and a step for determining whether or not a scale crack has occurred are repeated until occurrence of a scale crack is determined. In the second removal step (S20), a step for electrolyzing the metal member having the scale crack, a second image acquisition step for acquiring an image of the oxide scale as a second image, and a second determination step for determining whether or not the scale crack has disappeared are repeated until disappearance of the oxide scale is determined.Type: ApplicationFiled: July 2, 2020Publication date: November 3, 2022Inventors: Hiroaki FUKUSHIMA, Yuichi HIRAKAWA, Hiroaki YOSHIDA, Masahiko YAMASHITA, Takeo TOKUMOTO -
Patent number: 11378526Abstract: A faulted condition determination method is designed to detect a chromium content and a nickel content in a predetermined boundary region proximate to a boundary between a high-strength ferrite steel and a weld material in a welded joint in which the high-strength ferrite steel and another steel are welded together using the weld material containing nickel and to thereby determine the faulted condition of the predetermined boundary region based on the chromium content and the nickel content. Accordingly, it is possible to appropriately determine the faulted condition of welding of a replacement part in which a high-strength ferrite steel and another steel are welded together using a nickel-based weld material.Type: GrantFiled: February 7, 2019Date of Patent: July 5, 2022Assignees: MITSUBISHI HEAVY INDUSTRIES, LTD., NATIONAL INSTITUTE FOR MATERIALS SCIENCEInventors: Nobuhiko Saito, Nobuyoshi Komai, Yuichi Hirakawa, Hiroaki Fukushima, Kota Sawada, Kazuhiro Kimura, Kaoru Sekido
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Patent number: 10590508Abstract: A method for manufacturing a shaft body by welding a plurality of shaft members together and forming the shaft body, the method including: a primary tempering step of subjecting a range in at least one of the shaft members, which is in the vicinity of an end of another shaft member side adjacent thereto, to tempering before the shaft members are welded together so that a strength of an end side of a region thereof is lower than a strength at a side which is opposite to the end of the region thereof; a welding step of welding the shaft members together after the primary tempering step; and a secondary tempering step of tempering the vicinity of a weld part between the shaft members after the welding step.Type: GrantFiled: October 9, 2015Date of Patent: March 17, 2020Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Yuichi Hirakawa, Hiroaki Fukushima, Shin Nishimoto, Hiroyuki Endo
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Publication number: 20190390313Abstract: A method for determining a microstructure of a titanium alloy includes determining a microstructure morphology of a titanium alloy based on a relational expression including a mechanical property parameter relating to a mechanical property of the titanium alloy, a microstructure parameter relating to a microstructure of the titanium alloy, and a composition parameter relating to a composition of the titanium alloy.Type: ApplicationFiled: June 12, 2019Publication date: December 26, 2019Applicant: Mitsubishi Hitachi Power Systems, Ltd.Inventors: Hiroaki FUKUSHIMA, Naoki SEO, Nobuo SHIMIZU, Shingo AMANO, Ikuo OKADA
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Publication number: 20190250110Abstract: A faulted condition determination method is designed to detect a chromium content and a nickel content in a predetermined boundary region proximate to a boundary between a high-strength ferrite steel and a weld material in a welded joint in which the high-strength ferrite steel and another steel are welded together using the weld material containing nickel and to thereby determine the faulted condition of the predetermined boundary region based on the chromium content and the nickel content. Accordingly, it is possible to appropriately determine the faulted condition of welding of a replacement part in which a high-strength ferrite steel and another steel are welded together using a nickel-based weld material.Type: ApplicationFiled: February 7, 2019Publication date: August 15, 2019Inventors: Nobuhiko SAITO, Nobuyoshi KOMAI, Yuichi HIRAKAWA, Hiroaki FUKUSHIMA, Kota SAWADA, Kazuhiro KIMURA, Kaoru SEKIDO
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Publication number: 20170298468Abstract: A method for manufacturing a shaft body by welding a plurality of shaft members together and forming the shaft body, the method including: a primary tempering step of subjecting a range in at least one of the shaft members, which is in the vicinity of an end of another shaft member side adjacent thereto, to tempering before the shaft members are welded together so that a strength of an end side of a region thereof is lower than a strength at a side which is opposite to the end of the region thereof; a welding step of welding the shaft members together after the primary tempering step; and a secondary tempering step of tempering the vicinity of a weld part between the shaft members after the welding step.Type: ApplicationFiled: October 9, 2015Publication date: October 19, 2017Inventors: Yuichi HIRAKAWA, Hiroaki FUKUSHIMA, Shin NISHIMOTO, Hiroyuki ENDO
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Patent number: 9689789Abstract: A first measured value of a specific physical quantity at a target portion is correlated with a damage evaluation index to calculate a damage degree corresponding to the first measured value. The specific physical quantity is measured at least once at a position corresponding to the first measurement position in another time period having a different usage elapsed time from that of the first measurement, and these second and subsequent measured values are correlated with damage degrees calculated based on temporal changes corresponding to the second and subsequent measurements. A new damage evaluation index is approximately calculated based on a relationship between the first, second, and subsequent measured values and the damage degrees corresponding to the first, second, and subsequent measured values.Type: GrantFiled: September 7, 2012Date of Patent: June 27, 2017Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Nobuyoshi Komai, Hiroaki Fukushima, Yuichi Hirakawa, Hiroyuki Ohyama, Takeshi Miyazawa, Hiroaki Yoshida
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Publication number: 20150019142Abstract: A first measured value of a specific physical quantity at a target portion is correlated with a damage evaluation index to calculate a damage degree corresponding to the first measured value. The specific physical quantity is measured at least once at a position corresponding to the first measurement position in another time period having a different usage elapsed time from that of the first measurement, and these second and subsequent measured values are correlated with damage degrees calculated based on temporal changes corresponding to the second and subsequent measurements. A new damage evaluation index is approximately calculated based on a relationship between the first, second, and subsequent measured values and the damage degrees corresponding to the first, second, and subsequent measured values.Type: ApplicationFiled: September 7, 2012Publication date: January 15, 2015Inventors: Nobuyoshi Komai, Hiroaki Fukushima, Yuichi Hirakawa, Hiroyuki Ohyama, Takeshi Miyazawa, Hiroaki Yoshida
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Patent number: 6661470Abstract: A method for displaying a moving picture having a proper tone by changing a combination of subfields constituting a field of the moving picture, the subfields each having a different weight of luminance, a motion vector indicating a moved direction of the image and a moved quantity thereof is detected from image data, new image data for providing a tone equivalent to a tone to be received by a retina to the retina when the image moves is generated corresponding to the detected motion vector, and the combination of subfields is determined based on the generated new image data.Type: GrantFiled: September 27, 1999Date of Patent: December 9, 2003Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hidehiko Kawakami, Hideaki Kawamura, Kazuo Tomida, Yoshio Watanabe, Hiroaki Fukushima, Masaki Tokoi