Patents by Inventor Hideaki Yamamura
Hideaki Yamamura 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: 20240101391Abstract: A system for detecting a presence of a person in a hoistway, having: one or more controllers configured to authenticate the person in the hoistway; the one or more controllers being operationally connected to an elevator car in the hoistway and configured to determine whether the person is within a predetermined distance of the elevator car from a signal emitter on the person; wherein when the person is within the predetermined distance of the elevator car, the one or more controllers is configured to transmit a feedback request to the person and stop the elevator car unless the one or more controllers receives feedback to the feedback request within a predetermined period of time.Type: ApplicationFiled: September 26, 2022Publication date: March 28, 2024Inventors: Jayapal Reddy Gireddy, Helge Krambeck, Xinjin Zheng, Yuzhen Xue, Koji Kiyomoto, Arnaud Blanchard, Daigoro Kurokawa, Kazuya Yamamura, Hideki Arai, Terumitsu Saito, Hideaki Sasaki, Takashi Tanaka, Naoto Furuichi
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Patent number: 10350676Abstract: A spring steel includes a predetermined chemical composition and a composite inclusion having a maximum diameter of 2 ?m or more that TiN is adhered to an inclusion containing REM, O and Al, in which the number of the composite inclusion is 0.004 pieces/mm2 to 10 pieces/mm2, the maximum diameter of the composite inclusion is 40 ?m or less, the sum of the number density of an alumina cluster having the maximum diameter of 10 ?m or more, MnS having the maximum diameter of 10 ?m or more and TiN having the maximum diameter of 1 ?m to 10 pieces/mm2.Type: GrantFiled: April 23, 2013Date of Patent: July 16, 2019Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Masafumi Miyazaki, Hideaki Yamamura, Masayuki Hashimura, Takashi Fujita
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Patent number: 9896749Abstract: A steel for induction hardening includes as a chemical composition, by mass %, C: 0.45% to 0.85%, Si: 0.01% to 0.80%, Mn: 0.1% to 1.5%, Al: 0.01% to 0.05%, REM: 0.0001% to 0.050%, O: 0.0001% to 0.0030%. Ca: 0.0050% or less as necessary, Ti: less than 0.005%, N: 0.015% or less, P: 0.03% or less, S: 0.01% or less, and the balance consists of Fe and impurities. The steel for induction hardening also includes a composition inclusion which is an inclusion containing REM, O, S, and Al, or an inclusion containing REM, Ca, O, S, and Al, to which TiN is adhered.Type: GrantFiled: October 18, 2013Date of Patent: February 20, 2018Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Masayuki Hashimura, Masafumi Miyazaki, Takashi Fujita, Hideaki Yamamura
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Patent number: 9809875Abstract: A case hardening steel includes as a chemical composition, by mass %, C: 0.10% to 0.40%, Si: 0.01% to 0.80%, Mn: 0.1% to 1.5%, Cr: 0.35% to 2.0%, Al: 0.01% to 0.05%, REM: 0.0001% to 0.050%, O: 0.0001% to 0.0030%, Ca: 0.0050% or less as necessary, Ti: less than 0.005%, N: 0.015% or less, P: 0.03% or less, S: 0.01% or less, and the balance consists of Fe and impurities. The case hardening steel also includes a composition inclusion which is an inclusion containing REM, O, S, and Al, or an inclusion containing REM, Ca, O, S, and Al, to which TiN is adhered.Type: GrantFiled: October 18, 2013Date of Patent: November 7, 2017Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Masayuki Hashimura, Masafumi Miyazaki, Takashi Fujita, Hideaki Yamamura
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Patent number: 9732407Abstract: A bearing steel includes, as a metallographic structure, inclusions which contain complex oxysulfides including Rare Earth Metal, Ca, O, S, and Al, TiN, MnS, Al2O3, and complex oxides including Al and Ca, wherein, a number fraction of the complex oxysulfides in a total number of the inclusions is 50% to less than 100% and a number of complex oxysulfides having a major axis of 5 ?m or more is 0.001 pieces to 2 pieces in an observed section of 1 mm2, and a number of TiN existing independently from the complex oxysulfides and having a major axis of 5 ?m or more is 0.001 pieces to less than 1.0 piece in an observed section of 1 mm2.Type: GrantFiled: October 5, 2012Date of Patent: August 15, 2017Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Masayuki Hashimura, Masafumi Miyazaki, Hideaki Yamamura, Takahisa Suzuki, Takashi Fujita
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Patent number: 9650690Abstract: A high-strength steel sheet includes: 0.03 to 0.20% of C, 0.08 to 1.5% of Si, 0.5 to 3.0% of Mn, 0.05% or less of P, 0.0005% or more of S, 0.008 to 0.20% of acid-soluble Ti, 0.0005 to 0.01% of N, more than 0.01% of acid-soluble Al, and 0.001 to 0.04% of one or both of Ce and La in terms of mass %; and the balance including Fe and inevitable impurities. The ratio of (Ce+La)/acid-soluble Al is equal to or more than 0.1 and the ratio of (Ce+La)/S is in the range of 0.4 to 50 in a mass base, and the density of the number of inclusions, having a circle equivalent diameter of 2 ?m or less, which are present in the steel sheet is equal to or more than 15/mm2.Type: GrantFiled: June 15, 2009Date of Patent: May 16, 2017Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Kenichi Yamamoto, Katsuhiro Sasai, Hideaki Yamamura, Hiroshi Harada, Kaoru Kawasaki
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Patent number: 9617626Abstract: The present invention provides a high-strength steel sheet including: C: 0.03 to 0.25 mass %, Si: 0.1 to 2.0 mass %, Mn: 0.5 to 3.0 mass %, P: not more than 0.05 mass %, T.O: not more than 0.0050 mass %, S: 0.0001 to 0.01 mass %, N: 0.0005 to 0.01 mass %, acid-soluble Al: more than 0.01 mass %, Ca: 0.0005 to 0.0050 mass %, and a total of at least one element of Ce, La, Nd, and Pr: 0.001 to 0.01 mass %, with a balance including iron and inevitable impurities, in which the steel sheet contains a chemical component on a basis of mass that satisfies 0.7<100×([Ce]+[La]+[Nd]+[Pr])/[acid-soluble Al]?70 and 0.Type: GrantFiled: February 23, 2012Date of Patent: April 11, 2017Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Kenichi Yamamoto, Hideaki Yamamura, Yuzo Takahashi, Osamu Kawano, Kohsuke Kume, Junji Haji, Daisuke Maeda, Yoshihiro Suwa
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Patent number: 9595376Abstract: A non-oriented electrical steel sheet comprising, Si: not less than 1.0 mass % nor more than 3.5 mass %, Al: not less than 0.1 mass % nor more than 3.0 mass %, Ti: not less than 0.001 mass % nor more than 0.01 mass %, Bi: not less than 0.001 mass % nor more than 0.01 mass %, wherein Expression (1) is satisfied when a Ti content (mass %) is represented as [Ti] and a Bi content (mass %) is represented as [Bi]: [Ti]?0.8×[Bi]+0.002 . . . (1).Type: GrantFiled: June 16, 2015Date of Patent: March 14, 2017Assignee: Nippon Steel & Sumitomo Metal CorporationInventors: Masafumi Miyazaki, Hideaki Yamamura, Takeshi Kubota, Yousuke Kurosaki, Kazuto Kawakami, Kazumi Mizukami, Takeaki Wakisaka
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Publication number: 20160151832Abstract: A spring steel includes a predetermined chemical composition and a composite inclusion having a maximum diameter of 2 ?m or more that TiN is adhered to an inclusion containing REM, O and Al, in which the number of the composite inclusion is 0.004 pieces/mm2 to 10 pieces/mm2, the maximum diameter of the composite inclusion is 40 ?m or less, the sum of the number density of an alumina cluster having the maximum diameter of 10 ?m or more, MnS having the maximum diameter of 10 ?m or more and TiN having the maximum diameter of 1 ?m to 10 pieces/mm2.Type: ApplicationFiled: April 23, 2013Publication date: June 2, 2016Inventors: Masafumi MIYAZAKI, Hideaki YAMAMURA, Masayuki HASHIMURA, Takashi FUJITA
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Patent number: 9149867Abstract: A low-carbon steel slab producing method includes: adding Ti to a molten steel decarbonized to have a carbon concentration of 0.05 mass % or less, and subsequently adding at least one of La and Ce to adjust a constitution, and producing a smelted molten steel; and pouring the smelted molten steel into a casting mold via a tundish; wherein at least one of La and Ce in a total amount of 0.2 to 1.2 times an increased amount of oxygen in the smelted molten steel during contained in the tundish is added to the smelted molten steel in the tundish, so as to obtain a steel slab having inclusions which contain oxides of Ti and at least one of La and Ce as chief components, and so as to make a composition of each of the inclusions have a mass ratio of 0.1 to 0.7, in terms of (La2O3+Ce2O3)÷TiOn (n=1˜2).Type: GrantFiled: August 7, 2012Date of Patent: October 6, 2015Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Masafumi Miyazaki, Hideaki Yamamura, Satoru Mineta
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Publication number: 20150279531Abstract: A non-oriented electrical steel sheet comprising, Si: not less than 1.0 mass % nor more than 3.5 mass %, Al: not less than 0.1 mass % nor more than 3.0 mass %, Ti: not less than 0.001 mass % nor more than 0.01 mass %, Bi: not less than 0.001 mass % nor more than 0.01 mass %, wherein Expression (1) is satisfied when a Ti content (mass %) is represented as [Ti] and a Bi content (mass %) is represented as [Bi]: [Ti]?0.8×[Bi]+0.002 . . . (1).Type: ApplicationFiled: June 16, 2015Publication date: October 1, 2015Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Masafumi MIYAZAKI, Hideaki YAMAMURA, Takeshi KUBOTA, Yousuke KUROSAKI, Kazuto KAWAKAMI, Kazumi MIZUKAMI, Takeaki WAKISAKA
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Publication number: 20150203943Abstract: A steel for induction hardening includes as a chemical composition, by mass %, C: 0.45% to 0.85%, Si: 0.01% to 0.80%, Mn: 0.1% to 1.5%, Al: 0.01% to 0.05%, REM: 0.0001% to 0.050%, O: 0.0001% to 0.0030%. Ca: 0.0050% or less as necessary, Ti: less than 0.005%, N: 0.015% or less, P: 0.03% or less, S: 0.01% or less, and the balance consists of Fe and impurities. The steel for induction hardening also includes a composition inclusion which is an inclusion containing REM, O, S, and Al, or an inclusion containing REM, Ca, O, S, and Al, to which TiN is adhered.Type: ApplicationFiled: October 18, 2013Publication date: July 23, 2015Inventors: Masayuki Hashimura, Masafumi Miyazaki, Takashi Fujita, Hideaki Yamamura
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Patent number: 9085817Abstract: In a non-oriented electrical steel sheet, Si: not less than 1.0 mass % nor more than 3.5 mass %, Al: not less than 0.1 mass % nor more than 3.0 mass %, Ti: not less than 0.001 mass % nor more than 0.01 mass %, Bi: not less than 0.001 mass % nor more than 0.01 mass %, and so on are contained. (1) expression described below is satisfied when a Ti content (mass %) is represented as [Ti] and a Bi content (mass %) is represented as [Bi]. [Ti]?0.8×[Bi]+0.Type: GrantFiled: May 25, 2010Date of Patent: July 21, 2015Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Masafumi Miyazaki, Hideaki Yamamura, Takeshi Kubota, Yousuke Kurosaki, Kazuto Kawakami, Kazumi Mizukami, Takeaki Wakisaka
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Publication number: 20150191808Abstract: A case hardening steel includes as a chemical composition, by mass %, C: 0.10% to 0.40%, Si: 0.01% to 0.80%, Mn: 0.1% to 1.5%, Cr: 0.35% to 2.0%, Al: 0.01% to 0.05%, REM: 0.0001% to 0.050%, O: 0.0001% to 0.0030%, Ca: 0.0050% or less as necessary, Ti: less than 0.005%, N: 0.015% or less, P: 0.03% or less, S: 0.01% or less, and the balance consists of Fe and impurities. The case hardening steel also includes a composition inclusion which is an inclusion containing REM, O, S, and Al, or an inclusion containing REM, Ca, O, S, and Al, to which TiN is adhered.Type: ApplicationFiled: October 18, 2013Publication date: July 9, 2015Inventors: Masayuki Hashimura, Masafumi Miyazaki, Takashi Fujita, Hideaki Yamamura
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Patent number: 8840734Abstract: A non-oriented electrical steel sheet, containing: C: 0.01 mass % or less; Si: 1.0 mass % or more and 3.5 mass % or less; Al: 0.1 mass % or more and 3.0 mass % or less; Mn: 0.1 mass % or more and 2.0 mass % or less; P: 0.1 mass % or less; S: 0.005 mass % or less; Ti: 0.001 mass % or more and 0.01 mass % or less; N: 0.005 mass % or less; and Y: more than 0.05 mass % and 0.2 mass % or less, with the balance being iron and inevitable impurities.Type: GrantFiled: February 5, 2013Date of Patent: September 23, 2014Assignee: Nippon Steel & Sumitomo Metal CorporationInventors: Masafumi Miyazaki, Hideaki Yamamura, Kazuto Kawakami
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Publication number: 20140261906Abstract: A bearing steel includes, as a metallographic structure, inclusions which contain complex oxysulfides including Rare Earth Metal, Ca, O, S, and Al, TiN, MnS, Al2O3, and complex oxides including Al and Ca, wherein, a number fraction of the complex oxysulfides in a total number of the inclusions is 50% to less than 100% and a number of complex oxysulfides having a major axis of 5 ?m or more is 0.001 pieces to 2 pieces in an observed section of 1 mm2, and a number of TiN existing independently from the complex oxysulfides and having a major axis of 5 ?m or more is 0.001 pieces to less than 1.0 piece in an observed section of 1 mm2.Type: ApplicationFiled: October 5, 2012Publication date: September 18, 2014Inventors: Masayuki Hashimura, Masafumi Miyazaki, Hideaki Yamamura, Takahisa Suzuki, Takashi Fujita
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Publication number: 20140072471Abstract: A non-oriented electrical steel sheet, containing: C: 0.01 mass % or less; Si: 1.0 mass % or more and 3.5 mass % or less; Al: 0.1 mass % or more and 3.0 mass % or less; Mn: 0.1 mass % or more and 2.0 mass % or less; P: 0.1 mass % or less; S: 0.005 mass % or less; Ti: 0.001 mass % or more and 0.01 mass % or less; N: 0.005 mass % or less; and Y: more than 0.05 mass % and 0.2 mass % or less, with the balance being iron and inevitable impurities.Type: ApplicationFiled: February 5, 2013Publication date: March 13, 2014Inventors: Masafumi Miyazaki, Hideaki Yamamura, Kazuto Kawakami
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Publication number: 20130142688Abstract: The present invention provides a high-strength steel sheet including: C: 0.03 to 0.25 mass %, Si: 0.1 to 2.0 mass %, Mn: 0.5 to 3.0 mass %, P: not more than 0.05 mass %, T.O: not more than 0.0050 mass %, S: 0.0001 to 0.01 mass %, N: 0.0005 to 0.01 mass %, acid-soluble Al: more than 0.01 mass %, Ca: 0.0005 to 0.0050 mass %, and a total of at least one element of Ce, La, Nd, and Pr: 0.001 to 0.01 mass %, with a balance including iron and inevitable impurities, in which the steel sheet contains a chemical component on a basis of mass that satisfies 0.7<100×([Ce]+[La]+[Nd]+[Pr])/[acid-soluble Al]?70 and 0.Type: ApplicationFiled: February 23, 2012Publication date: June 6, 2013Inventors: Kenichi Yamamoto, Hideaki Yamamura, Yuzo Takahashi, Osamu Kawano, Kohsuke Kume, Junji Haji, Daisuki Maeda, Yoshihiro Suwa
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Patent number: 8418749Abstract: A continuous casting device for steel of the present invention includes a casting mold for casting a molten steel, a submerged entry nozzle, an electromagnetic stirring device, and an electromagnetic brake device. Further, a curved portion which is curved toward the electromagnetic stirring device is formed at least at a position where the curved portion faces the submerged entry nozzle, on each of the long side walls. Moreover, the horizontal distance between a top of the curved portion and the submerged entry nozzle in plan view is equal to or more than 35 mm and less than 50 mm.Type: GrantFiled: November 4, 2009Date of Patent: April 16, 2013Assignee: Nippon Steel & Sumitomo Metal CorporationInventors: Takehiko Toh, Hideaki Yamamura, Kenji Umetsu
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Publication number: 20120298320Abstract: A low-carbon steel slab producing method includes: adding Ti to a molten steel decarbonized to have a carbon concentration of 0.05 mass % or less, and subsequently adding at least one of La and Ce to adjust a constitution, and producing a smelted molten steel; and pouring the smelted molten steel into a casting mold via a tundish; wherein at least one of La and Ce in a total amount of 0.2 to 1.2 times an increased amount of oxygen in the smelted molten steel during contained in the tundish is added to the smelted molten steel in the tundish, so as to obtain a steel slab having inclusions which contain oxides of Ti and at least one of La and Ce as chief components, and so as to make a composition of each of the inclusions have a mass ratio of 0.1 to 0.7, in terms of (La2O3+Ce2O3)÷TiOn (n=1˜2).Type: ApplicationFiled: August 7, 2012Publication date: November 29, 2012Inventors: Masafumi MIYAZAKI, Hideaki YAMAMURA, Satoru MINETA