Patents by Inventor Yohei Oka
Yohei Oka 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: 11927125Abstract: A prediction device that predicts time for a reducing agent accommodated in a container mounted on a work vehicle to freeze includes a remaining amount information acquisition unit configured to acquire remaining amount information indicating a remaining amount of the reducing agent in the container, a wall surface temperature acquisition unit configured to acquire a detection result of a wall surface temperature of the container, a reducing agent temperature acquisition unit configured to acquire a detection result of a temperature of the reducing agent, and a time calculation unit configured to calculate the time for the reducing agent to freeze based on the wall surface temperature, the reducing agent temperature, and the remaining amount information.Type: GrantFiled: July 16, 2020Date of Patent: March 12, 2024Assignee: Komatsu Ltd.Inventors: Akira Oka, Tatsuya Yamakawa, Yohei Nishikawa
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Publication number: 20220178832Abstract: The present invention shortens measurement time of a sample and improves measurement accuracy. The present invention is a biological sample analysis device that stores a sample containing a biological substance and a luminescent reagent in a container, detects luminescence generated by reacting the sample and the luminescent reagent, and analyzes the biological substance, the present invention including a photodetector that detects the luminescence and outputs a light intensity signal, and a calculator that subtracts the light intensity signal obtained before the sample and the luminescent reagent react from the light intensity signal obtained after the sample and the luminescent reagent react to remove light stored in the container, and calculates a value related to an amount of the biological substance.Type: ApplicationFiled: May 15, 2020Publication date: June 9, 2022Inventors: Hideki NAKAYAMA, Yoshiki FUKAO, Masanori KIDO, Yoko NAKAI, Yohei OKA
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Publication number: 20220026330Abstract: A complex particle measurement apparatus comprising a first light source that irradiates a first storage cell; a photodetector that detects intensity of light; a second light source that irradiates a second storage cell; an imaging unit that images a particle group; an image data output unit that outputs image data; a supporter that supports the first storage cell and the second storage cell; and a communication pipe that connects the first storage cell and the second storage cell to pass a sample solution, wherein the first storage cell and the second storage cell have bottom surfaces located at positions different from each other, and the communication pipe is laid such that a channel from the first storage cell to the second storage cell has an incline of not less than 0 or not more than 0.Type: ApplicationFiled: October 15, 2019Publication date: January 27, 2022Inventors: Hisashi AKIYAMA, Yasuhiro TATEWAKI, Yohei OKA, Takeshi AKAMATSU, Makoto NAGURA, Takashi KIMBA
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Patent number: 11185924Abstract: A metal powder for additive manufacturing includes: not less than 0.2 mass % and not more than 1.3 mass % of aluminum; and a balance including copper and an incidental impurity.Type: GrantFiled: February 6, 2019Date of Patent: November 30, 2021Assignees: DAIHEN CORPORATION, FUKUDA METAL FOIL & POWDER CO., LTD.Inventors: Ryusuke Tsubota, Junichi Tanaka, Yohei Oka, Akira Okamoto, Masato Kikukawa, Hiroaki Okubo, Yoshito Nishizawa, Takeshi Maruyama, Motonori Nishida
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Patent number: 11077495Abstract: A metal powder contains not less than 0.10 mass % and not more than 1.00 mass % of at least one of chromium and silicon, and a balance of copper. The total content of the chromium and the silicon is not more than 1.00 mass %. In accordance with an additive manufacturing method for this metal powder, an additively-manufactured article made from a copper alloy is provided. The additively-manufactured article has both an adequate mechanical strength and an adequate electrical conductivity.Type: GrantFiled: July 24, 2017Date of Patent: August 3, 2021Assignees: DAIHEN CORPORATION, Osaka Research Institute of Industrial Science and TechnologyInventors: Ryusuke Tsubota, Junichi Tanaka, Yohei Oka, Takayuki Nakamoto, Takahiro Sugahara, Mamoru Takemura, Sohei Uchida
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Publication number: 20210187614Abstract: A copper alloy powder is a copper alloy powder for additive manufacturing. The copper alloy powder contains more than 1.00 mass % and not more than 2.80 mass % of chromium, and a balance of copper. A method for producing an additively-manufactured article includes a first step of preparing a copper alloy powder containing more than 1.00 mass % and not more than 2.80 mass % of chromium and a balance of copper and a second step of producing the additively-manufactured article from the copper alloy powder, and the additively-manufactured article is produced such that forming a powder layer including the copper alloy powder, and solidifying the copper alloy powder at a predetermined position in the powder layer to form a shaped layer are sequentially repeated to stack such shaped layers to thus produce the additively-manufactured article.Type: ApplicationFiled: March 4, 2021Publication date: June 24, 2021Applicants: DAIHEN CORPORATION, Osaka Research Institute of Industrial Science and TechnologyInventors: Ryusuke TSUBOTA, Yohei OKA, Akira OKAMOTO, Takayuki NAKAMOTO, Takahiro SUGAHARA, Naruaki SHINOMIYA, Mamoru TAKEMURA, Sohei UCHIDA
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Patent number: 10981226Abstract: A copper alloy powder is a copper alloy powder for additive manufacturing. The copper alloy powder contains more than 1.00 mass % and not more than 2.80 mass % of chromium, and a balance of copper. A method for producing an additively-manufactured article includes a first step of preparing a copper alloy powder containing more than 1.00 mass % and not more than 2.80 mass % of chromium and a balance of copper and a second step of producing the additively-manufactured article from the copper alloy powder, and the additively-manufactured article is produced such that forming a powder layer including the copper alloy powder, and solidifying the copper alloy powder at a predetermined position in the powder layer to form a shaped layer are sequentially repeated to stack such shaped layers to thus produce the additively-manufactured article.Type: GrantFiled: October 24, 2017Date of Patent: April 20, 2021Assignees: DAIHEN CORPORATION, Osaka Research Institute of Industrial Science and TechnologyInventors: Ryusuke Tsubota, Yohei Oka, Akira Okamoto, Takayuki Nakamoto, Takahiro Sugahara, Naruaki Shinomiya, Mamoru Takemura, Sohei Uchida
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Patent number: 10967431Abstract: A metal powder for additive manufacturing includes: not less than 0.2 mass % and not more than 1.3 mass % of aluminum; and a balance including copper and an incidental impurity.Type: GrantFiled: February 6, 2019Date of Patent: April 6, 2021Assignees: DAIHEN CORPORATION, FUKUDA METAL FOIL & POWDER CO., LTD.Inventors: Ryusuke Tsubota, Junichi Tanaka, Yohei Oka, Akira Okamoto, Masato Kikukawa, Hiroaki Okubo, Yoshito Nishizawa, Takeshi Maruyama, Motonori Nishida
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Patent number: 10843260Abstract: A metal powder contains not less than 0.10 mass % and not more than 1.00 mass % of at least one of chromium and silicon, and a balance of copper. The total content of the chromium and the silicon is not more than 1.00 mass %. In accordance with an additive manufacturing method for this metal powder, an additively-manufactured article made from a copper alloy is provided. The additively-manufactured article has both an adequate mechanical strength and an adequate electrical conductivity.Type: GrantFiled: May 11, 2016Date of Patent: November 24, 2020Assignees: DAIHEN CORPORATION, OSAKA RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Ryusuke Tsubota, Jyunichi Tanaka, Yohei Oka, Takayuki Nakamoto, Takahiro Sugahara, Mamoru Takemura, Sohei Uchida
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Patent number: 10421122Abstract: A metal powder contains not less than 0.10 mass % and not more than 1.00 mass % of at least one of chromium and silicon, and a balance of copper. The total content of the chromium and the silicon is not more than 1.00 mass %. In accordance with an additive manufacturing method for this metal powder, an additively-manufactured article made from a copper alloy is provided. The additively-manufactured article has both an adequate mechanical strength and an adequate electrical conductivity.Type: GrantFiled: July 24, 2017Date of Patent: September 24, 2019Assignees: DAIHEN CORPORATION, OSAKA RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Ryusuke Tsubota, Junichi Tanaka, Yohei Oka, Takayuki Nakamoto, Takahiro Sugahara, Mamoru Takemura, Sohei Uchida
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Publication number: 20190168303Abstract: A metal powder for additive manufacturing includes: not less than 0.2 mass % and not more than 1.3 mass % of aluminum; and a balance including copper and an incidental impurity.Type: ApplicationFiled: February 6, 2019Publication date: June 6, 2019Applicants: DAIHEN CORPORATION, FUKUDA METAL FOIL & POWDER CO., LTD.Inventors: Ryusuke TSUBOTA, Junichi TANAKA, Yohei OKA, Akira OKAMOTO, Masato KIKUKAWA, Hiroaki OKUBO, Yoshito NISHIZAWA, Takeshi MARUYAMA, Motonori NISHIDA
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Publication number: 20190168302Abstract: A metal powder for additive manufacturing includes: not less than 0.2 mass % and not more than 1.3 mass % of aluminum; and a balance including copper and an incidental impurity.Type: ApplicationFiled: February 6, 2019Publication date: June 6, 2019Applicants: Daihen Corporation, Fukuda Metal Foil & Powder Co., Ltd.Inventors: Ryusuke Tsubota, Junichi Tanaka, Yohei Oka, Akira Okamoto, Masato Kikukawa, Hiroaki Okubo, Yoshito Nishizawa, Takeshi Maruyama, Motonori Nishida
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Publication number: 20180111199Abstract: A copper alloy powder is a copper alloy powder for additive manufacturing. The copper alloy powder contains more than 1.00 mass % and not more than 2.80 mass % of chromium, and a balance of copper. A method for producing an additively-manufactured article includes a first step of preparing a copper alloy powder containing more than 1.00 mass % and not more than 2.80 mass % of chromium and a balance of copper and a second step of producing the additively-manufactured article from the copper alloy powder, and the additively-manufactured article is produced such that forming a powder layer including the copper alloy powder, and solidifying the copper alloy powder at a predetermined position in the powder layer to form a shaped layer are sequentially repeated to stack such shaped layers to thus produce the additively-manufactured article.Type: ApplicationFiled: October 24, 2017Publication date: April 26, 2018Applicants: DAIHEN Corporation, Osaka Research Institute of Industrial Science and TechnologyInventors: Ryusuke TSUBOTA, Yohei OKA, Akira OKAMOTO, Takayuki NAKAMOTO, Takahiro SUGAHARA, Naruaki SHINOMIYA, Mamoru TAKEMURA, Sohei UCHIDA
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Publication number: 20170333987Abstract: A metal powder contains not less than 0.10 mass % and not more than 1.00 mass % of at least one of chromium and silicon, and a balance of copper. The total content of the chromium and the silicon is not more than 1.00 mass %. In accordance with an additive manufacturing method for this metal powder, an additively-manufactured article made from a copper alloy is provided. The additively-manufactured article has both an adequate mechanical strength and an adequate electrical conductivity.Type: ApplicationFiled: July 24, 2017Publication date: November 23, 2017Applicants: DAIHEN CORPORATION, TECHNOLOGY RESEARCH INSTITUTE OF OSAKA PREFECTUREInventors: Ryusuke TSUBOTA, Junichi TANAKA, Yohei OKA, Takayuki NAKAMOTO, Takahiro SUGAHARA, Mamoru TAKEMURA, Sohei UCHIDA
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Publication number: 20170320134Abstract: A metal powder contains not less than 0.10 mass % and not more than 1.00 mass % of at least one of chromium and silicon, and a balance of copper. The total content of the chromium and the silicon is not more than 1.00 mass %. In accordance with an additive manufacturing method for this metal powder, an additively-manufactured article made from a copper alloy is provided. The additively-manufactured article has both an adequate mechanical strength and an adequate electrical conductivity.Type: ApplicationFiled: July 24, 2017Publication date: November 9, 2017Applicants: DAIHEN CORPORATION, TECHNOLOGY RESEARCH INSTITUTE OF OSAKA PREFECTUREInventors: Ryusuke TSUBOTA, Junichi TANAKA, Yohei OKA, Takayuki NAKAMOTO, Takahiro SUGAHARA, Mamoru TAKEMURA, Sohei UCHIDA
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Publication number: 20170182557Abstract: A metal powder for additive manufacturing includes: not less than 0.2 mass % and not more than 1.3 mass % of aluminum; and a balance including copper and an incidental impurity.Type: ApplicationFiled: December 15, 2016Publication date: June 29, 2017Applicants: DAIHEN CORPORATION, FUKUDA METAL FOIL & POWDER CO., LTD.Inventors: Ryusuke TSUBOTA, Junichi TANAKA, Yohei OKA, Akira OKAMOTO, Masato KIKUKAWA, Hiroaki OKUBO, Yoshito NISHIZAWA, Takeshi MARUYAMA, Motonori NISHIDA
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Publication number: 20160332227Abstract: A metal powder contains not less than 0.10 mass % and not more than 1.00 mass % of at least one of chromium and silicon, and a balance of copper. The total content of the chromium and the silicon is not more than 1.00 mass %. In accordance with an additive manufacturing method for this metal powder, an additively-manufactured article made from a copper alloy is provided. The additively-manufactured article has both an adequate mechanical strength and an adequate electrical conductivity.Type: ApplicationFiled: May 11, 2016Publication date: November 17, 2016Applicants: DAIHEN Corporation, TECHNOLOGY RESEARCH INSTITUTE OF OSAKA PREFECTUREInventors: Ryusuke TSUBOTA, Jyunichi TANAKA, Yohei OKA, Takayuki NAKAMOTO, Takahiro SUGAHARA, Mamoru TAKEMURA, Sohei UCHIDA
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Patent number: 7748760Abstract: A work holding mechanism for horizontally holding a flat work is incorporated in work transport equipment. The holding mechanism includes a base member for supporting the work and a plurality of guide members provided at the base member. Each guide member includes a shaft, a contact portion and a limit portion. The shaft is pivotally supported by the base member. The contact portion comes into contact with part of the lower surface of the perimeter of the work and is pushed down, with the shaft as a fulcrum, when the work is placed on the base member. The limit portion is raised, with the shaft as a fulcrum, to face part of the side surface of the perimeter of the work when the contact portion is lowered.Type: GrantFiled: October 24, 2007Date of Patent: July 6, 2010Assignee: DAIHEN CorporationInventors: Toshikazu Kushida, Yohei Oka
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Publication number: 20080099970Abstract: A work holding mechanism for horizontally holding a flat work is incorporated in work transport equipment. The holding mechanism includes a base member for supporting the work and a plurality of guide members provided at the base member. Each guide member includes a shaft, a contact portion and a limit portion. The shaft is pivotally supported by the base member. The contact portion comes into contact with part of the lower surface of the perimeter of the work and is pushed down, with the shaft as a fulcrum, when the work is placed on the base member. The limit portion is raised, with the shaft as a fulcrum, to face part of the side surface of the perimeter of the work when the contact portion is lowered.Type: ApplicationFiled: October 24, 2007Publication date: May 1, 2008Applicant: DAIHEN CorporationInventors: Toshikazu Kushida, Yohei Oka