Patents Assigned to Japan Agency for Marine-Earth Science and Technology
  • Patent number: 11835670
    Abstract: 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: Grant
    Filed: July 28, 2020
    Date of Patent: December 5, 2023
    Assignees: NEC CORPORATION, JAPAN AGENCY FOR MARINE-EARTH SCIENCE AND TECHNOLOGY
    Inventors: Naoki Kuwamori, Narumi Takahashi, Masaru Nakano, Kentaro Sueki, Shuichiro Yada, Yoko Kuwamori
  • Patent number: 11837331
    Abstract: 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: Grant
    Filed: April 27, 2018
    Date of Patent: December 5, 2023
    Assignees: Japan Agency for Marine-Earth Science and Technology, TechnoSuruga Laboratory Co., Ltd.
    Inventors: Tomo Kitahashi, Miyuki Nishijima, Masafumi Shimotashiro
  • Patent number: 11789171
    Abstract: 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: Grant
    Filed: July 28, 2020
    Date of Patent: October 17, 2023
    Assignees: NEC CORPORATION, JAPAN AGENCY FOR MARINE-EARTH SCIENCE AND TECHNOLOGY
    Inventors: Naoki Kuwamori, Narumi Takahashi, Masaru Nakano, Kentaro Sueki, Shuichiro Yada, Yoko Kuwamori
  • Patent number: 11686868
    Abstract: 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: Grant
    Filed: March 19, 2020
    Date of Patent: June 27, 2023
    Assignee: JAPAN AGENCY FOR MARINE-EARTH SCIENCE AND TECHNOLOGY
    Inventors: Daisuke Sugiyama, Seiji Tsuboi
  • Patent number: 11658751
    Abstract: 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: Grant
    Filed: October 3, 2019
    Date of Patent: May 23, 2023
    Assignees: Shimadzu Corporation, JAPAN AGENCY FOR MARINE-EARTH SCIENCE AND TECHNOLOGY
    Inventors: Naoki Nishimura, Takao Sawa
  • Publication number: 20230112110
    Abstract: 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: Application
    Filed: February 26, 2021
    Publication date: April 13, 2023
    Applicant: Japan Agency for Marine-Earth Science and Technology
    Inventors: Eigou MIYAZAKI, Yoshihisa KAWAMURA, Ikuo SAWADA, Masanori KYO, Mikito FURUICHI, Keita AKIYAMA, Yasuhiro NAMBA
  • Publication number: 20220389173
    Abstract: 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: Application
    Filed: October 23, 2020
    Publication date: December 8, 2022
    Applicant: Japan Agency for Marine-Earth Science and Technology
    Inventor: Noriyuki ISOBE
  • Publication number: 20220376796
    Abstract: 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: Application
    Filed: November 8, 2019
    Publication date: November 24, 2022
    Applicants: SHIMADZU CORPORATION, JAPAN AGENCY FOR MARINE-EARTH SCIENCE AND TECHNOLOGY
    Inventors: Naoki NISHIMURA, Takao SAWA
  • Patent number: 11454075
    Abstract: 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: Grant
    Filed: January 15, 2019
    Date of Patent: September 27, 2022
    Assignees: Japan Agency for Marine-Earth Science and Technology, NuStar Technologies Pte Ltd
    Inventors: Tomokazu Saruhashi, Ikuo Sawada, Masanori Kyo, Takahiro Yokoyama, Noriaki Sakurai, Ryan Bo Jia Wee, Chamal Jayanath Seneviratne, Kim Kok Goi, Sim Guan Teo
  • Patent number: 11448634
    Abstract: 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: Grant
    Filed: May 10, 2018
    Date of Patent: September 20, 2022
    Assignees: NEC CORPORATION, JAPAN AGENCY FOR MARINE-EARTH SCIENCE AND TECHNOLOGY, NATIONAL UNIVERSITY CORPORATION KOCHI UNIVERSITY, National Institute of Advanced Industrial Science and Technology
    Inventors: Yousuke Taira, Naoki Kuwamori, Tatsuhiko Hoshino, Jonaotaro Onodera, Tatsuhiko Yamaguchi, Kyoko Tomioka, Takuya Itaki
  • Publication number: 20220276402
    Abstract: A seismic observation device includes a vibration detection status information acquisition that acquires vibration detection status information at each of a plurality of observation points, a multidimensionalization unit that generates vibration detection status information in two or more dimensions related to a geographical position and a time on the basis of the vibration detection status information at each of the plurality of observation points, and a group specifying unit that classifies element information that forms the vibration detection status information in two or more dimensions and each piece of which indicates a vibration detection status at a certain geographical position and a certain time into groups for each cause of vibration.
    Type: Application
    Filed: July 28, 2020
    Publication date: September 1, 2022
    Applicants: NEC CORPORATION, JAPAN AGENCY FOR MARINE-EARTH SCIENCE AND TECHNOLOGY
    Inventors: Naoki KUWAMORI, Narumi TAKAHASHI, Masaru NAKANO, Kentaro SUEKI, Shuichiro YADA, Yoko KUMAMORI
  • Publication number: 20220276400
    Abstract: 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: Application
    Filed: July 28, 2020
    Publication date: September 1, 2022
    Applicants: NEC CORPORATION, JAPAN AGENCY FOR MARINE-EARTH SCIENCE AND TECHNOLOGY
    Inventors: Naoki KUWAMORI, Narumi TAKAHASHI, Masaru NAKANO, Kentaro SUEKI, Shuichiro YADA, Yoko KUWAMORI
  • Patent number: 11423947
    Abstract: An image recording method in an image processing apparatus, includes the steps of acquiring, from a plurality of cameras, respective video images which the plurality of cameras start capturing in the sea before a first light that is lit in a first color is turned on and end capturing after a second light that is lit in a second color is turned on after the first tight is turned on, detecting, for each of the video images, a difference in luminance between chronologically adjacent frames in the video image, associating times of frames between the video images on the basis of the difference, and recording the video images with the associated times in a recording medium.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: August 23, 2022
    Assignee: Japan Agency for Marine-Earth Science and Technology
    Inventors: Tetsuya Miwa, Dhugal Lindsay, Masafumi Shimotashiro, Hiroshi Takahashi, Atsushi Arai
  • Publication number: 20220260737
    Abstract: 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: Application
    Filed: July 28, 2020
    Publication date: August 18, 2022
    Applicants: NEC CORPORATION, JAPAN AGENCY FOR MARINE-EARTH SCIENCE AND TECHNOLOGY
    Inventors: Naoki KUWAMORI, Narumi TAKAHASHI, Masaru NAKANO, Kantaro SUEKI, Shuichiro YADA, Yoko KIWAMORI
  • Publication number: 20220187483
    Abstract: 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: Application
    Filed: March 19, 2020
    Publication date: June 16, 2022
    Applicant: JAPAN AGENCY FOR MARINE-EARTH SCIENCE AND TECHNOLOGY
    Inventors: Daisuke SUGIYAMA, Seiji TSUBOI
  • Publication number: 20220163450
    Abstract: 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 pre
    Type: Application
    Filed: February 6, 2020
    Publication date: May 26, 2022
    Applicants: National Institute for Environmental Studies, Japan Agency for Marine-Earth Science and Technology
    Inventors: Hiroshi Koshikawa, Masanobu Kawachi, Shigeshi Fuchida, Shuhei Ota, Tetsuya Miwa, Yasuo Furushima, Shunsuke Kondo
  • Patent number: 11225844
    Abstract: The submarine drilling support system includes a first guide support part that has a ring shape, has a plurality of rollers of which roller axes are directed to a horizontal direction and is arranged along a circumferential direction going around a rotation support axis parallel to a vertical direction, and is provided to allow the drill pipe to be inserted through in the vertical direction; and a first rotation holding part that is configured to support the first guide support part so as to be rotatable in the circumferential direction. The pluralities of rollers are adjacent to each other in the circumferential direction and are arranged in a state where the drill pipe is able to insert through a space surrounded by the plurality of rollers.
    Type: Grant
    Filed: February 16, 2018
    Date of Patent: January 18, 2022
    Assignees: Japan Agency for Marine-Earth Science and Technology, Nustar Technologies Pte, Ltd
    Inventors: Tomokazu Saruhashi, Ikuo Sawada, Masanori Kyo, Takahiro Yokoyama, Noriaki Sakurai, Terence Lim, Suhaimi Adlina, Kim Kok Goi, Sim Guan Teo
  • Patent number: 11182893
    Abstract: A method of pretreating a sample including biological particles, the method including a step of acquiring a fraction (1b) which passes through a sieve (A) having meshes of 250 to 1000 ?m and does not pass through a sieve (B) having meshes of 32 to 63 ?m by sieving a sample including biological particles as a detection target, and a step of adding a colloidal solution having a density of 1.10 to 2.45 g/cm3 to the fraction (1b), subjecting the resultant solution to centrifugation, and acquiring a supernatant fraction (S0) after the centrifugation.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: November 23, 2021
    Assignee: Japan Agency for Marine-Earth Science and Technology
    Inventors: Tomo Kitahashi, Hiromi Watanabe, Masashi Tsuchiya, Hiroyuki Yamamoto
  • Patent number: 11099291
    Abstract: A transmission device of a submarine resource exploration system includes a transmission unit which transmits a predetermined transmission artificial signal transmitted in order to perform exploration of submarine resources in water using water as a medium. A reception device includes a reception unit which receives a composite signal of a received artificial signal representing a signal propagated to the reception device using water as a medium in the transmission artificial signal, and a self-potential propagated to the reception device using water as a medium due to a potential anomaly generated due to submarine resources. A signal processing device includes a signal processing unit which separates the composite signal into the received artificial signal and the self-potential.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: August 24, 2021
    Assignee: Japan Agency for Marine-Earth Science and Technology & Nippon Marine Enterprises, Ltd.
    Inventors: Takafumi Kasaya, Tadanori Goto, Yoshifumi Kawada, Hisanori Iwamoto
  • Patent number: 10994820
    Abstract: Image recording as long as possible during one activity is required in deep sea exploration. Necessity of multi-directional image recording, optical and chemical observations and probing of mineral resources of seabed are also increased. There is no underwater exploration device enable these requirements. It is disclosed that at least one battery-driven underwater exploration body having three pressure-resistant hollow glass spheres for housing an image capturing device, an illumination device, a recording device, an acoustic communication device and a control device controlling thereof and at least one battery body having an approximately the same shape and structure as the underwater exploration body are connected with each other by a connecting tool to provide the connectedly-formed underwater exploration device.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: May 4, 2021
    Assignees: JAPAN AGENCY FOR MARINE-EARTH SCIENCE AND TECHNOLOGY, Okamoto Glass Co., Ltd.
    Inventors: Tetsuya Miwa, Dhugal Lindsay, Masafumi Shimotashiro, Hiroshi Takahashi, Atsushi Arai