Patents by Inventor Ryusuke Nakai

Ryusuke Nakai 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).

  • Publication number: 20210047717
    Abstract: The present invention provides an alloy for medical use including an Au—Pt alloy, in which the Au—Pt alloy has a Pt concentration of 24 mass % or more and less than 34 mass % with the balance being Au, and has at least a material structure in which a Pt-rich phase having a Pt concentration higher than that of an ?-phase is distributed in an ?-phase matrix, the Pt-rich phase has a Pt concentration that is 1.2 to 3.8 times the Pt concentration of the ?-phase, and the Pt-rich phase has an area ratio of 1 to 22% in any cross-section. This alloy is an artifact-free alloy material that exhibits excellent compatibility with a magnetic field environment such as an MRI and has magnetic susceptibility of ±4 ppm with respect to magnetic susceptibility of water.
    Type: Application
    Filed: October 22, 2020
    Publication date: February 18, 2021
    Inventors: KUNIHIRO SHIMA, KENJI GOTO, YASUSHI MASAHIRO, ASAKA UENO, HIROO IWATA, RYUSUKE NAKAI, TOMONOBU KODAMA
  • Patent number: 10883162
    Abstract: The present invention provides an alloy for medical use including an Au—Pt alloy, in which the Au—Pt alloy has a Pt concentration of 24 mass % or more and less than 34 mass % with the balance being Au, and has at least a material structure in which a Pt-rich phase having a Pt concentration higher than that of an ?-phase is distributed in an ?-phase matrix, the Pt-rich phase has a Pt concentration that is 1.2 to 3.8 times the Pt concentration of the ?-phase, and the Pt-rich phase has an area ratio of 1 to 22% in any cross-section. This alloy is an artifact-free alloy material that exhibits excellent compatibility with a magnetic field environment such as an MRI and has magnetic susceptibility of ±4 ppm with respect to magnetic susceptibility of water.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: January 5, 2021
    Assignees: TANAKA KIKINZOKU KOGYO K.K., KYOTO UNIVERSITY
    Inventors: Kunihiro Shima, Kenji Goto, Yasushi Masahiro, Asaka Ueno, Hiroo Iwata, Ryusuke Nakai, Tomonobu Kodama
  • Publication number: 20200290877
    Abstract: A carbon nanostructure producing method includes a growth step in which a plurality of catalyst particles in close contact with each other are separated in a flow of a carbon-containing gas so as to grow carbon nanotubes between the plurality of catalyst particles, and an elongation step in which the carbon nanotube is elongated by a wind pressure of the carbon-containing gas with at least one of the catalyst particles being retained.
    Type: Application
    Filed: June 29, 2018
    Publication date: September 17, 2020
    Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., UNIVERSITY OF TSUKUBA
    Inventors: Takeshi HIKATA, Soichiro OKUBO, Ryusuke NAKAI, Jun-ichi FUJITA
  • Patent number: 10767282
    Abstract: A method for manufacturing a carbon nanostructure according to an embodiment of the present invention is a method for manufacturing a carbon nanostructure, the method including a preparation step of preparing a substrate containing a carburizable metal as a main component, and a carbon nanostructure growth step of supplying a carbon-containing gas while heating the substrate, in which the carbon nanostructure growth step includes gradually cleaving a heated portion of the substrate. The cleaving in the carbon nanostructure growth step is preferably performed by subjecting the substrate to shearing. The heating in the carbon nanostructure growth step is preferably performed by irradiating a cleaving portion of the substrate with a laser. The preparation step preferably includes forming, in the substrate, a notch for inducing cleavage. Preferably, the substrate in the carbon nanostructure growth step is not oxidized.
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: September 8, 2020
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Takeshi Hikata, Soichiro Okubo, Ryusuke Nakai, Daisuke Tanioka
  • Publication number: 20190169030
    Abstract: A method for producing a carbon nanostructure according to an aspect of the present invention is a method in which a carbon nanostructure is produced between a base body and a separable body while the separable body is relatively moved away from the base body, the base body including a carburizable metal that is a principal constituent, the separable body including a carburizable metal that is a principal constituent, the separable body being joined to or in contact with the base body in a linear or strip-like shape. The method includes a carburizing gas feed step, an oxidizing gas feed step, a heating step in which the portion of the base body at which the base body and the separable body are joined to or in contact with each other is heated, and a separation step in which the separable body is relatively moved away from the base body.
    Type: Application
    Filed: March 14, 2017
    Publication date: June 6, 2019
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Takeshi HIKATA, Soichiro OKUBO, Ryusuke NAKAI, Daisuke TANIOKA
  • Patent number: 10220120
    Abstract: The present invention is an alloy for medical use including an Au—Pt alloy, containing 34 to 36 mass % of Pt with the balance being Au, and having an ?-phase single structure in which a ratio of a peak intensity (X) of a Pt (111) plane to a peak intensity (Y) of an Au (111) plane (X/Y) is 0.01 or less in an X-ray diffraction analysis. The alloy can be produced in such a manner that after the Au—Pt alloy ingot is molten and cast, cold working and a heat treatment for homogenization are performed at least two times on the molten and cast alloy. The alloy of the present invention is an artifact-free material that exhibits excellent compatibility with a magnetic field environment such as an MRI and has magnetic susceptibility of ±4 ppm with respect to that of water.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: March 5, 2019
    Assignees: TANAKA KIKINZOKU KOGYO K.K., KYOTO UNIVERSITY
    Inventors: Kunihiro Shima, Kenji Goto, Yasushi Masahiro, Asaka Ueno, Hiroo Iwata, Ryusuke Nakai, Tomonobu Kodama
  • Publication number: 20180327934
    Abstract: A method for manufacturing a carbon nanostructure according to an embodiment of the present invention is a method for manufacturing a carbon nanostructure, the method including a preparation step of preparing a substrate containing a carburizable metal as a main component, and a carbon nanostructure growth step of supplying a carbon-containing gas while heating the substrate, in which the carbon nanostructure growth step includes gradually cleaving a heated portion of the substrate. The cleaving in the carbon nanostructure growth step is preferably performed by subjecting the substrate to shearing. The heating in the carbon nanostructure growth step is preferably performed by irradiating a cleaving portion of the substrate with a laser. The preparation step preferably includes forming, in the substrate, a notch for inducing cleavage. Preferably, the substrate in the carbon nanostructure growth step is not oxidized.
    Type: Application
    Filed: July 21, 2016
    Publication date: November 15, 2018
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Takeshi HIKATA, Soichiro OKUBO, Ryusuke NAKAI, Daisuke TANIOKA
  • Patent number: 9688376
    Abstract: Provided are a system and a method for treating ballast water for a ship, the system including a rotary filtration apparatus including a filter that is cylindrically formed so as to surround an axis, that is rotatable around the axis, and that has a pleated shape that is folded in a cylinder radial direction; and an electric motor for rotating the filter. A distance between the cleaning nozzle and a recess of the filter is 120 mm or less. The system and the method are configured to perform a steady-state operation that satisfies the following conditions a to d: a) a rotation speed of the filter during a filtering operation is in the range of 20 to 100 rpm, b) a flow speed of cleaning water ejected from the cleaning nozzle is 250 m/min or more, c) a flow rate of filtered water per unit area of the filter is 5.1 m/h or less, and d) a flow rate of discharged water discharged from the discharge channel is 5% of the flow rate of filtered water or more.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: June 27, 2017
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Munetsugu Ueyama, Isao Ozawa, Kenichiro Miyatake, Ryusuke Nakai
  • Publication number: 20170029927
    Abstract: The present invention provides an alloy for medical use including an Au—Pt alloy, in which the Au—Pt alloy has a Pt concentration of 24 mass % or more and less than 34 mass % with the balance being Au, and has at least a material structure in which a Pt-rich phase having a Pt concentration higher than that of an ?-phase is distributed in an ?-phase matrix, the Pt-rich phase has a Pt concentration that is 1.2 to 3.8 times the Pt concentration of the ?-phase, and the Pt-rich phase has an area ratio of 1 to 22% in any cross-section. This alloy is an artifact-free alloy material that exhibits excellent compatibility with a magnetic field environment such as an MRI and has magnetic susceptibility of ±4 ppm with respect to magnetic susceptibility of water.
    Type: Application
    Filed: January 30, 2014
    Publication date: February 2, 2017
    Applicants: TANAKA KIKINZOKU KOGYO K.K., KYOTO UNIVERSITY
    Inventors: Kunihiro SHIMA, Kenji GOTO, Yasushi MASAHIRO, Asaka UENO, Hiroo IWATA, Ryusuke NAKAI, Tomonobu KODAMA
  • Publication number: 20160367729
    Abstract: The present invention is an alloy for medical use including an Au—Pt alloy, containing 34 to 36 mass % of Pt with the balance being Au, and having an ?-phase single structure in which a ratio of a peak intensity (X) of a Pt (111) plane to a peak intensity (Y) of an Au (111) plane (X/Y) is 0.01 or less in an X-ray diffraction analysis. The alloy can be produced in such a manner that after the Au—Pt alloy ingot is molten and cast, cold working and a heat treatment for homogenization are performed at least two times on the molten and cast alloy. The alloy of the present invention is an artifact-free material that exhibits excellent compatibility with a magnetic field environment such as an MRI and has magnetic susceptibility of ±4 ppm with respect to that of water.
    Type: Application
    Filed: January 30, 2014
    Publication date: December 22, 2016
    Inventors: Kunihiro SHIMA, Kenji GOTO, Yasushi MASAHIRO, Asaka UENO, Hiroo IWATA, Ryusuke NAKAI, Tomonobu KODAMA
  • Patent number: 9511310
    Abstract: A filter disposed as a cylinder around an axis line, and provided to be rotatable around the axis line, a treated water nozzle for emitting treated water toward an outer circumferential surface of the filter, a case provided to surround the filter, and including an outer cylindrical portion having a nozzle opening of the treated water nozzle therein, a filtered water flow path for guiding filtered water that has been transmitted through the filter to outside of the case from within the cylinder of the filter, and a discharge flow path for discharging discharged water that was not filtered through the filter to the outside of the case are provided.
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: December 6, 2016
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Munetsugu Ueyama, Ryusuke Nakai, Hideki Kashihara, Manabu Okui
  • Publication number: 20150246301
    Abstract: A filtering apparatus includes a cylindrical filter F having a cylinder axis in a vertical direction, and a casing C surrounding the filter F, in which untreated water a is filtered through the filter F from an outer circumferential surface to an inner circumferential surface of the filter F, and the resulting filtered water a? is guided to the outside of the casing C. The filter F includes a plurality of divided filters arranged in the direction of the cylinder axis, and the divided filters can be easily repaired and replaced. The divided filters can be connected and integrated together via reinforcing rods 33 by using threaded connections 36, and can be individually detached. When a sealing member 38 is provided between upper and lower facing surfaces of the divided filters, the untreated water does not flow from an upper surface and a lower surface of the divided filters, and the sealing member is rotated together with the filter and does not slide.
    Type: Application
    Filed: September 6, 2013
    Publication date: September 3, 2015
    Inventors: Munetsugu Ueyama, Masaki Mori, Shinichi Kanazawa, Ryusuke Nakai
  • Publication number: 20150224426
    Abstract: A liquid filtering device includes a filtration membrane unit, cleaning means that cleans a filtering surface of the filtration membrane unit from a side to which a water to be filtered is supplied, and pressure-detecting means that detects a differential pressure between before and after filtration by the filtration membrane unit, in which the filtration membrane unit includes two filtration membranes. A ballast water treatment apparatus includes the liquid filtering device, in which the liquid filtering device is used as a filtering device of seawater, and the ballast water treatment apparatus is carried in a ship.
    Type: Application
    Filed: July 9, 2013
    Publication date: August 13, 2015
    Inventors: Munetsugu Ueyama, Shinichi Kanazawa, Ryusuke Nakai
  • Publication number: 20140205966
    Abstract: There is provided a human body information extraction device for extracting human body information including position information from a reference position, from 3D information on the human body elements obtained from a CT information or the like in which the position information from the reference position with respect to a human body element is unknown. In the human body information extraction device, a reference plane for positioning is detected by detecting information on a common positioning member contained in both of the 3D human body information from the CT information and a 3D model information from a human body model. The both reference planes are matched on the display so that the 3D human body information is positioned on the reference plane. Furthermore, only human information corresponding to the 3D model information is extracted from the CT information. By using this device, it is possible to obtain 3D human body information positioned on the reference plane from which a noise is excluded.
    Type: Application
    Filed: February 27, 2014
    Publication date: July 24, 2014
    Applicant: iCAT CORPORATION
    Inventors: Motofumi SOGO, Yoshihisa SOMEKAWA, Ryusuke NAKAI
  • Publication number: 20140175021
    Abstract: Provided are a system and a method for treating ballast water for a ship, the system including a rotary filtration apparatus including a filter that is cylindrically formed so as to surround an axis, that is rotatable around the axis, and that has a pleated shape that is folded in a cylinder radial direction; and an electric motor for rotating the filter. A distance between the cleaning nozzle and a recess of the filter is 120 mm or less. The system and the method are configured to perform a steady-state operation that satisfies the following conditions a to d: a) a rotation speed of the filter during a filtering operation is in the range of 20 to 100 rpm, b) a flow speed of cleaning water ejected from the cleaning nozzle is 250 m/min or more, c) a flow rate of filtered water per unit area of the filter is 5.1 m/h or less, and d) a flow rate of discharged water discharged from the discharge channel is 5% of the flow rate of filtered water or more.
    Type: Application
    Filed: February 8, 2013
    Publication date: June 26, 2014
    Inventors: Munetsugu Ueyama, Isao Ozawa, Kenichiro Miyatake, Ryusuke Nakai
  • Publication number: 20130319953
    Abstract: A ballast water treatment apparatus includes a filter that is cylindrically formed so as to surround an axis, a case that includes an outer cylindrical portion that is disposed so as to surround the filter, a rotation mechanism that rotates the filter around the axis, an untreated water nozzle that ejects untreated water to a filter-surrounding region that is defined by an outer peripheral surface of the filter and the outer cylindrical portion, a cleaning water nozzle that ejects cleaning water toward the outer peripheral surface of the filter, a filtered water channel through which filtered water that has passed through the filter flows from a region inside the filter to outside of the case, and a discharge channel through which discharged water that has not passed through the filter is discharged from the filter-surrounding region to outside of the case.
    Type: Application
    Filed: July 23, 2012
    Publication date: December 5, 2013
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Isao Ozawa, Munetsugu Ueyama, Ryusuke Nakai
  • Publication number: 20120312757
    Abstract: A filter disposed as a cylinder around an axis line, and provided to be rotatable around the axis line, a treated water nozzle for emitting treated water toward an outer circumferential surface of the filter, a case provided to surround the filter, and including an outer cylindrical portion having a nozzle opening of the treated water nozzle therein, a filtered water flow path for guiding filtered water that has been transmitted through the filter to outside of the case from within the cylinder of the filter, and a discharge flow path for discharging discharged water that was not filtered through the filter to the outside of the case are provided.
    Type: Application
    Filed: February 16, 2011
    Publication date: December 13, 2012
    Applicant: SUMITOMO ELECTRIC INDUSTRIES,LTD.
    Inventors: Munetsugu Ueyama, Ryusuke Nakai, Hideki Kashihara, Manabu Okui
  • Publication number: 20120118824
    Abstract: There is provided a water treatment apparatus, including: first membrane filtration means in which a filtration membrane having an average pore diameter of 1 ?m or more is used; second membrane filtration means for treating water filtered by the first membrane filtration means, by using a microfiltration membrane or ultrafiltration membrane; and reverse osmosis membrane filtration means for treating water filtered by the second membrane filtration means. In particular, there is provided a water treatment apparatus, wherein a hydrophobic polymer membrane that is not subjected to hydrophilicizing processing is used as the filtration membrane having an average pore diameter of 1 ?m or more. There is also provided a water treatment method that can be implemented by these water treatment apparatuses.
    Type: Application
    Filed: November 16, 2011
    Publication date: May 17, 2012
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Hideki KASHIHARA, Ryusuke Nakai, Shuji Hahakura, Satoshi Yahagi
  • Publication number: 20120074059
    Abstract: There is provided a cleaning method for a hydrophobic filtration membrane used for membrane filtration of water to be treated such as seawater, discharged water and ballast water including a jelly-like suspended substance and clogged with the suspended substance in the water to be treated, the filtration membrane being brought into contact with limonene-containing water, or backwashing of the filtration membrane with a cleaning liquid being done, and then, a flow having air taken therein being applied onto a surface of the filtration membrane or a water stream from an eductor nozzle being sprayed onto the filtration membrane. There is also provided a membrane filtration apparatus capable of efficiently performing the above-mentioned cleaning method.
    Type: Application
    Filed: September 23, 2011
    Publication date: March 29, 2012
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Shuji HAHAKURA, Hideki Kashihara, Satoshi Yahagi, Ryusuke Nakai
  • Publication number: 20090123892
    Abstract: There is provided a human body information extraction device for extracting human body information including position information from a reference position, from 3D information on the human body elements obtained from a CT information or the like in which the position information from the reference position with respect to a human body element is unknown. In the human body information extraction device, a reference plane for positioning is detected by detecting information on a common positioning member contained in both of the 3D human body information from the CT information and a 3D model information from a human body model. The both reference planes are matched on the display so that the 3D human body information is positioned on the reference plane. Furthermore, only human information corresponding to the 3D model information is extracted from the CT information. By using this device, it is possible to obtain 3D human body information positioned on the reference plane from which a noise is excluded.
    Type: Application
    Filed: September 26, 2005
    Publication date: May 14, 2009
    Applicant: CAT Corporation
    Inventors: Motofumi SOGO, Yoshihisa SOMEKAWA, Ryusuke NAKAI