Patents Assigned to Japan Agency for Marine-Earth Science and Technology
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Patent number: 12203859Abstract: The present invention provides a device (1) for detecting contamination with a photosynthesis inhibitor, the device including a collection device (10) configured to collect a test liquid, a light-blocking pretreatment tank (21) configured to store the test liquid (2) collected by the collection device in a state of containing phytoplankton, a stirring device configured to maintain a floating state of the phytoplankton in the test liquid stored in the pretreatment tank, an irradiation light source configured to irradiate the phytoplankton in the test liquid stored in the pretreatment tank with weak light having an underwater photon flux density that does not cause photoinhibition, a drainage conduit (40) configured to allow the test liquid discharged from the pretreatment tank to flow thereinto, and a fluorescence quantum efficiency measuring machine (50) provided for the drainage conduit and configured to measure a fluorescence quantum efficiency of the phytoplankton in the test liquid discharged from the preType: GrantFiled: February 6, 2020Date of Patent: January 21, 2025Assignees: National Institute for Environmental Studies, Japan Agency for Marine-Earth Science and TechnologyInventors: Hiroshi Koshikawa, Masanobu Kawachi, Shigeshi Fuchida, Shuhei Ota, Tetsuya Miwa, Yasuo Furushima, Shunsuke Kondo
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Patent number: 12153007Abstract: A measurement cell for an electric conductivity measuring instrument capable of measuring an electric conductivity. An electric conductivity measuring instrument includes a measurement cell, two electrodes, and a resistance calculation device. The measurement cell has a double cylindrical structure composed of a glass cylindrical cell, through an inside of which seawater as a measurement target passes, and an insulating protective cylindrical cell. The protective cylindrical cell is formed from a material having mechanical properties such that a Young's modulus is in a range of more than 0 and 1.5 GPa or less, and a Poisson's ratio is in a range of 0.49 or more and 0.5 or less, and achieving a systematic error of 0.001 g/kg or less in a salt content in the deep sea at a depth of 3000 m or more.Type: GrantFiled: March 17, 2021Date of Patent: November 26, 2024Assignee: JAPAN AGENCY FOR MARINE-EARTH SCIENCE AND TECHNOLOGYInventor: Taiyo Kobayashi
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Publication number: 20240351920Abstract: The present invention relates to a bioreactor including: a container having an inlet and an outlet for a fluid; and a plurality of plate-shaped electrodes disposed in the container, in which a flow path in one direction from the inlet to the outlet is formed inside the container, and the flow path is formed such that opposing flows are adjacent to each other with the plate-shaped electrodes serving as partition walls interposed therebetween.Type: ApplicationFiled: August 31, 2022Publication date: October 24, 2024Applicants: Japan Agency for Marine-Earth Science and Technology, Kanto Natural Gas Development Co., Ltd.Inventors: Shunichi ISHII, Fumio INAGAKI, Hiroyuki IMACHI, Kenjiro KAWANO, Daisuke MURAI
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Publication number: 20240320848Abstract: A pollution level estimation system is a system that estimates a pollution level at a location to be estimated, the system including an image acquisition unit that acquires an image of the location to be estimated, a detection unit that detects a garbage portion showing garbage and a non-garbage portion not showing garbage at the location to be estimated in the acquired image, and a pollution level estimation unit that calculates areas of the detected garbage portion and non-garbage portion and estimates a pollution level at the location to be estimated on the basis of the calculated area.Type: ApplicationFiled: May 30, 2022Publication date: September 26, 2024Applicant: Japan Agency for Marine-Earth Science and TechnologyInventors: Daisuke SUGIYAMA, Mitsuko HIDAKA, Daisuke MATSUOKA, Fumiaki ARAKI
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Patent number: 12084948Abstract: A method for recovering rare-earth mud including steps of: (A) penetrating a mud gathering pipe into a layer containing rare-earth mud under the seafloor, (B) preparing a slurry containing a rare earth by loosening rare-earth mud in the mud gathering pipe, and (C) transferring the slurry through a mud raising pipe. A rare-earth mud recovery system including: a mud gathering pipe configured to penetrate into a layer containing rare-earth mud under a seafloor; a stirring device configured to loosen rare-earth mud in the mud gathering pipe; and a mud raising pipe connected to the mud gathering pipe.Type: GrantFiled: February 26, 2021Date of Patent: September 10, 2024Assignee: Japan Agency for Marine-Earth Science and TechnologyInventors: Eigou Miyazaki, Yoshihisa Kawamura, Ikuo Sawada, Masanori Kyo, Mikito Furuichi, Keita Akiyama, Yasuhiro Namba
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Patent number: 12012836Abstract: A mining riser pipe is extended from above water toward a water bottom containing water bottom resources, and a lower portion of an insertion pipe connected to a lower portion of the mining riser pipe is inserted into the water bottom. A liquid is supplied into the insertion pipe and a rotation shaft extends axially inside both of pipes is rotated to rotate stirring blades attached to a lower portion of the rotation shaft inside the insertion pipe, thereby drilling and dissolving mud S inside the insertion pipe into a slurry form by is raised to an upper portion of the insertion pipe by a stirring flow generated by the rotation of the stirring blades, and the raised mud is lifted above the water through the mining riser pipe by a lifting force.Type: GrantFiled: February 8, 2022Date of Patent: June 18, 2024Assignees: TOA Corporation, Japan Agency for Marine-Earth Science and TechnologyInventors: Tomohiro Morisawa, Shinya Omori, Ryutaro Murakami, Hiroshi Iida, Eigo Miyazaki, Keita Akiyama, Masanori Kyo, Ikuo Sawada, Yoshihisa Kawamura
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Patent number: 11929786Abstract: This optical communication device (1) is provided with: a plurality of light-receiving elements (11) configured to receive communication light, the plurality of light-receiving elements being provided so as to correspond to a plurality of channels; and a controller (15) configured to perform control to invalidate output from a light-receiving element that has received high-intensity light higher in light intensity than a predetermined value among the plurality of light-receiving elements.Type: GrantFiled: November 8, 2019Date of Patent: March 12, 2024Assignees: Shimadzu Corporation, JAPAN AGENCY FOR MARINE-EARTH SCIENCE AND TECHNOLOGYInventors: Naoki Nishimura, Takao Sawa
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Patent number: 11906678Abstract: A seismic observation device includes an input unit receiving input of time-series data of measurement values of a vibration, a processing target determination unit determining a time period of the time-series data that is a processing target, and a type determination unit acquiring a likelihood of classifying a cause of the vibration indicated in the time-series data in the time period into each of types of cause.Type: GrantFiled: July 28, 2020Date of Patent: February 20, 2024Assignees: NEC CORPORATION, JAPAN AGENCY FOR MARINE-EARTH SCIENCE AND TECHNOLOGYInventors: Naoki Kuwamori, Narumi Takahashi, Masaru Nakano, Kentaro Sueki, Shuichiro Yada, Yoko Kuwamori
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Patent number: 11891159Abstract: The present invention provides an unmanned watercraft capable of sufficiently cooling equipment that generates a large amount of heat, capable of cooling such equipment without using energy in the watercraft, and capable of improving mean time between failures (MTBF) of a cooling device. An unmanned watercraft 1 has a cooling structure CS for cooling a central processing unit CPU1 for image recognition and a central processing unit CPU2 for control that constitute a central processing unit CPU as a heat-generating body. The cooling structure CS includes a waterproof container 7 that accommodates the heat-generating body (an insulating envelope that surrounds the heat-generating body in an electrically insulated state). The waterproof container 7 is arranged outside a submerged part 3 of the unmanned watercraft 1 so as to be in contact with water present outside the unmanned watercraft 1, the submerged part 3 being submerged in water.Type: GrantFiled: January 25, 2019Date of Patent: February 6, 2024Assignee: Japan Agency for Marine-Earth Science and TechnologyInventors: Hiroshi Yoshida, Tadahiro Hyakudome, Ryotaro Suga, Takashi Yoshioka, Hisashi Sugiura, Hideki Endou, Yasuhiro Ueda, Yuichiro Dake, Tomoya Fukukawa, Ryuji Nakazono
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Patent number: 11837331Abstract: An integration system comprising a biological image acquiring device which acquires, from a sample including biological particles which are a detection target, a biological image which is an image of the biological particles; a nucleotide sequence information acquiring device which acquires nucleotide sequence information of the biological particles; and an integration device which associates and registers the biological image and the nucleotide sequence information acquired from the same type of biological particles in an integrated database.Type: GrantFiled: April 27, 2018Date of Patent: December 5, 2023Assignees: Japan Agency for Marine-Earth Science and Technology, TechnoSuruga Laboratory Co., Ltd.Inventors: Tomo Kitahashi, Miyuki Nishijima, Masafumi Shimotashiro
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Patent number: 11835670Abstract: A seismic observation device includes a data acquisition unit that acquires measurement data from each of a plurality of sensors that measure different types of state quantities related to movement of a ground, and an event determination unit that determines whether or not a predetermined event related to the movement of the ground has occurred on the basis of the measurement data from the plurality of sensors.Type: GrantFiled: July 28, 2020Date of Patent: December 5, 2023Assignees: NEC CORPORATION, JAPAN AGENCY FOR MARINE-EARTH SCIENCE AND TECHNOLOGYInventors: Naoki Kuwamori, Narumi Takahashi, Masaru Nakano, Kentaro Sueki, Shuichiro Yada, Yoko Kuwamori
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Patent number: 11789171Abstract: A seismic observation device includes a data acquisition unit that acquires measurement data from each of a plurality of sensors that measure different types of state quantities related to movement of a ground, and an event determination unit that determines whether or not a predetermined event related to the movement of the ground has occurred on the basis of the measurement data from the plurality of sensors.Type: GrantFiled: July 28, 2020Date of Patent: October 17, 2023Assignees: NEC CORPORATION, JAPAN AGENCY FOR MARINE-EARTH SCIENCE AND TECHNOLOGYInventors: Naoki Kuwamori, Narumi Takahashi, Masaru Nakano, Kentaro Sueki, Shuichiro Yada, Yoko Kuwamori
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Patent number: 11686868Abstract: An earthquake estimation method for more promptly estimating an earthquake on the basis of observation data. The earthquake estimation method includes, by a computer: generating an observation image showing a spatial distribution of seismic wave propagation on a basis of an observation result of seismic waves at a plurality of observation points on a ground; and estimating a parameter of an earthquake with respect to the observation image by using an earthquake estimation model in which a parameter of an earthquake including at least a position of a hypocenter and a magnitude is associated with a simulated observation image showing a spatial distribution of seismic wave propagation on a ground obtained from a result of a numerical simulation of the earthquake, performed with the parameter.Type: GrantFiled: March 19, 2020Date of Patent: June 27, 2023Assignee: JAPAN AGENCY FOR MARINE-EARTH SCIENCE AND TECHNOLOGYInventors: Daisuke Sugiyama, Seiji Tsuboi
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Patent number: 11658751Abstract: This underwater optical wireless communication system (100) is provided with a plurality of moving bodies (1) capable of moving underwater. The plurality of moving bodies each includes a plurality of optical wireless communication units (2) each configured to perform bidirectional communication between the plurality of moving bodies using communication light beams (30) having wavelengths different from each other in a plurality of directions which are mutually opposite directions. The plurality of optical wireless communication units is configured to perform bidirectional communication between the plurality of moving bodies using communication light beams, the communication beams having the same wavelength with respect to each of the plurality of directions.Type: GrantFiled: October 3, 2019Date of Patent: May 23, 2023Assignees: Shimadzu Corporation, JAPAN AGENCY FOR MARINE-EARTH SCIENCE AND TECHNOLOGYInventors: Naoki Nishimura, Takao Sawa
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Publication number: 20230112110Abstract: A method for recovering rare-earth mud including steps of: (A) penetrating a mud gathering pipe into a layer containing rare-earth mud under the seafloor, (B) preparing a slurry containing a rare earth by loosening rare-earth mud in the mud gathering pipe, and (C) transferring the slurry through a mud raising pipe. A rare-earth mud recovery system including: a mud gathering pipe configured to penetrate into a layer containing rare-earth mud under a seafloor; a stirring device configured to loosen rare-earth mud in the mud gathering pipe; and a mud raising pipe connected to the mud gathering pipe.Type: ApplicationFiled: February 26, 2021Publication date: April 13, 2023Applicant: Japan Agency for Marine-Earth Science and TechnologyInventors: Eigou MIYAZAKI, Yoshihisa KAWAMURA, Ikuo SAWADA, Masanori KYO, Mikito FURUICHI, Keita AKIYAMA, Yasuhiro NAMBA
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Publication number: 20220389173Abstract: A method for producing a hydrogel according to the present disclosure includes: (A1) a step of preparing an object to be treated including a water-soluble cellulose-based compound and water; (B1) a step of heating the object to be treated so as to separate water from the object to be treated; and (C1) a step of cooling the object to be treated that has acquired an increased content percentage of the cellulose-based compound through the treatment in step (B1), and a series of steps from step (B1) to step (C1) are repeated until the content percentage of the cellulose-based compound in the object to be treated reaches 10% by mass or more.Type: ApplicationFiled: October 23, 2020Publication date: December 8, 2022Applicant: Japan Agency for Marine-Earth Science and TechnologyInventor: Noriyuki ISOBE
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Publication number: 20220376796Abstract: This optical communication device (1) is provided with: a plurality of light-receiving elements (11) configured to receive communication light, the plurality of light-receiving elements being provided so as to correspond to a plurality of channels; and a controller (15) configured to perform control to invalidate output from a light-receiving element that has received high-intensity light higher in light intensity than a predetermined value among the plurality of light-receiving elements.Type: ApplicationFiled: November 8, 2019Publication date: November 24, 2022Applicants: SHIMADZU CORPORATION, JAPAN AGENCY FOR MARINE-EARTH SCIENCE AND TECHNOLOGYInventors: Naoki NISHIMURA, Takao SAWA
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Patent number: 11454075Abstract: A lock plug (7A) is inserted into a plug installation position of an insertion hole (5a) of a tool stem (5) connected to a drill string (10), and when a fluid has flowed to the insertion hole (5a), a stopper (62) protrudes radially outward from a tool body (6) and is locked to a subsea wellhead (4) and an internal stopper (66) protrudes radially inward from the tool body (6) and is locked to the tool stem (5) in a lock state. An unlock plug is inserted into the plug installation position of the insertion hole (5a), and when the fluid has flowed into the insertion hole (5a), the stopper (62) is separated from the subsea wellhead (4) and the internal stopper (66) is separated from the tool stem (5) to release the lock state.Type: GrantFiled: January 15, 2019Date of Patent: September 27, 2022Assignees: Japan Agency for Marine-Earth Science and Technology, NuStar Technologies Pte LtdInventors: Tomokazu Saruhashi, Ikuo Sawada, Masanori Kyo, Takahiro Yokoyama, Noriaki Sakurai, Ryan Bo Jia Wee, Chamal Jayanath Seneviratne, Kim Kok Goi, Sim Guan Teo
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Patent number: 11448634Abstract: An analysis apparatus (100) includes an image acquisition unit (110) and an analysis unit (120). The image acquisition unit (110) acquires image data of a microfossil in a sample collected from a stratum. The analysis unit (120) analyzes the image data acquired by the image acquisition unit (110) using a machine learning result to analyze a taxon or kind of the microfossil in the image data.Type: GrantFiled: May 10, 2018Date of Patent: September 20, 2022Assignees: NEC CORPORATION, JAPAN AGENCY FOR MARINE-EARTH SCIENCE AND TECHNOLOGY, NATIONAL UNIVERSITY CORPORATION KOCHI UNIVERSITY, National Institute of Advanced Industrial Science and TechnologyInventors: Yousuke Taira, Naoki Kuwamori, Tatsuhiko Hoshino, Jonaotaro Onodera, Tatsuhiko Yamaguchi, Kyoko Tomioka, Takuya Itaki
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Publication number: 20220276400Abstract: A seismic observation device includes an input unit receiving input of time-series data of measurement values of a vibration, a processing target determination unit determining a time period of the time-series data that is a processing target, and a type determination unit acquiring a likelihood of classifying a cause of the vibration indicated in the time-series data in the time period into each of types of cause.Type: ApplicationFiled: July 28, 2020Publication date: September 1, 2022Applicants: NEC CORPORATION, JAPAN AGENCY FOR MARINE-EARTH SCIENCE AND TECHNOLOGYInventors: Naoki KUWAMORI, Narumi TAKAHASHI, Masaru NAKANO, Kentaro SUEKI, Shuichiro YADA, Yoko KUWAMORI