Patents by Inventor Ryuichi Nagase

Ryuichi Nagase 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).

  • Patent number: 10940937
    Abstract: An object of the present invention is to prevent accumulation of moisture which has entered inside a honeycomb sandwich panel used for a stressed-skin structure of an aircraft. A reinforcing structure includes an outer panel constituting an outer shell of a tailplane and a honeycomb sandwich panel reinforcing the outer panel. The honeycomb sandwich panel includes a honeycomb core having a plurality of cells, an outer skin joined on the front side of the honeycomb core and disposed on the side of the outer panel, and an inner skin joined on the back side of the honeycomb core and disposed on the inner side of the tailplane. The inner skin has drainage channels formed therein through which each of the plurality of cells communicates with the outside of the honeycomb sandwich panel.
    Type: Grant
    Filed: February 11, 2016
    Date of Patent: March 9, 2021
    Assignee: MITSUBISHI AIRCRAFT CORPORATION
    Inventors: Hiromu Okamoto, Masayoshi Suhara, Ryuichi Nagase, Toshikazu Shigetomi, Morimasa Ishida
  • Patent number: 10288584
    Abstract: The present invention provides a method for locating a machining position in a repair material that is arranged on a member including a machined portion formed by predetermined machining, the method including: a step of arranging a marker including a portion having a different propagation characteristic of an ultrasonic wave from that of a peripheral portion in the machined portion existing in the member before the repair material is arranged on the member; and a step of applying the ultrasonic wave to the member covered with the repair material and locating the machining position at a position of the marker captured by the ultrasonic wave after the repair material is arranged on the member.
    Type: Grant
    Filed: October 6, 2015
    Date of Patent: May 14, 2019
    Assignee: MITSUBISHI AIRCRAFT CORPORATION
    Inventors: Toshikazu Shigetomi, Masatsugu Shimizu, Ryuichi Nagase, Morimasa Ishida, Shuhei Muto
  • Patent number: 9809298
    Abstract: There is provided a drainage system of an aircraft which discharges moisture having entered inside horizontal tails, which are structures of an airframe of an aircraft, toward the rear end of a fuselage, the drainage system including: a drainage channel which includes an introduction end and a discharge end, and by a capillary action delivers moisture introduced from the introduction end toward the discharge end; and a heater which heats and dries the moisture delivered through the drainage channel. The drainage channel of the present invention is preferably composed of a paper drainage material. It is also preferable that the introduction end of the drainage channel is provided in a lowermost region in the vertical direction within an area in which moisture can accumulate inside the horizontal tails while the aircraft is parked.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: November 7, 2017
    Assignee: MITSUBISHI AIRCRAFT CORPORATION
    Inventors: Hiromu Okamoto, Masayoshi Suhara, Ryuichi Nagase, Toshikazu Shigetomi, Morimasa Ishida
  • Publication number: 20160257430
    Abstract: An object of the present invention is to visualize an internal structural members, which are covered with a skin and therefore unrecognizable to the naked eye, from the outside of the skin. There is provided an internal structure visualization method applied to a main wing of an aircraft, which includes a skin with a front surface and a back surface and structural members supporting the skin from the back surface side, to display, when necessary, a trace map composed of lines extending along projection regions of the structural members, wherein functional lines, which are a developing element of the trace map, are provided along the projection regions of the front surface, and the trace map is displayed by performing a predetermined process on a predetermined region of the front surface where the functional lines are provided.
    Type: Application
    Filed: February 11, 2016
    Publication date: September 8, 2016
    Inventors: Shotaro Hayashi, Ryuichi Nagase, Masayoshi Suhara, Hiromu Okamoto, Kiwamu Arikawa, Morimasa Ishida
  • Publication number: 20160236768
    Abstract: An object of the present invention is to prevent accumulation of moisture which has entered inside a honeycomb sandwich panel used for a stressed-skin structure of an aircraft. A reinforcing structure includes an outer panel constituting an outer shell of a tailplane and a honeycomb sandwich panel reinforcing the outer panel. The honeycomb sandwich panel includes a honeycomb core having a plurality of cells, an outer skin joined on the front side of the honeycomb core and disposed on the side of the outer panel, and an inner skin joined on the back side of the honeycomb core and disposed on the inner side of the tailplane. The inner skin has drainage channels formed therein through which each of the plurality of cells communicates with the outside of the honeycomb sandwich panel.
    Type: Application
    Filed: February 11, 2016
    Publication date: August 18, 2016
    Inventors: Hiromu Okamoto, Masayoshi Suhara, Ryuichi Nagase, Toshikazu Shigetomi, Morimasa Ishida
  • Patent number: 9263732
    Abstract: The present invention provides a positive electrode active material for lithium ion batteries, which realizes a lithium ion battery that is, while satisfying fundamental characteristics of a battery (capacity, efficiency, load characteristics), low in the resistance and excellent in the lifetime characteristics. In the positive electrode active material for lithium ion batteries, the variation in the composition of transition metal that is a main component inside of particles of or between particles of the positive electrode active material, which is defined as a ratio of the absolute value of the difference between a composition ratio inside of the particles of or in a small area between the particles of the transition metal and a composition ratio in a bulk state to the composition ratio in a bulk state of the transition metal, is 5% or less.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: February 16, 2016
    Assignee: JX Nippon Mining & Metals Corporation
    Inventors: Ryuichi Nagase, Yasuhiro Kawahashi
  • Patent number: 9136533
    Abstract: This invention provides a lithium nickel manganese cobalt composite oxide having a composition of LiaNixMnyCozO2 (x+y+z=1, 1.05<a<1.3), wherein, in the data obtained by measuring a Raman spectrum of the composite oxide, the peak intensity of an Eg oscillation mode of a hexagonal crystal structure located at 480 to 495 cm?1 and the peak intensity of an F2g oscillation mode of a spinel structure located at 500 to 530 cm?1 in relation to the peak intensity of an A1g oscillation mode having a hexagonal crystal structure in which the main peak is located at 590 to 610 cm?1 are respectively 15% or higher and 40% or lower than the peak intensity of the A1g oscillation mode of a hexagonal crystal structure as the main peak. Thereby, the Raman spectrum can be used for the identification of the crystal structure to clarify the characteristics of a positive electrode precursor composed of lithium nickel manganese cobalt composite oxide.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: September 15, 2015
    Assignee: JX Nippon Mining & Metals Corporation
    Inventors: Ryuichi Nagase, Yoshio Kajiya, Hiroshi Tasaki
  • Patent number: 9059465
    Abstract: Provided is a positive electrode active material for a lithium ion battery positive electrode material made of lithium-containing nickel-manganese-cobalt composite oxide of a layered structure represented with LiaNixMnyCozO2 (1.0<a<1.3, 0.8<x+y+z<1.1), wherein, in a region with a molar volume Vm that is estimated from a lattice constant calculated from a (018) plane and a (113) plane in a powder X-ray diffraction pattern using CuK alpha rays as a vertical axis and Co ratio n (molar %) in metal components as a horizontal axis, the relationship thereof is within a range of Vm=21.276-0.0117 n as an upper limit and Vm=21.164-0.0122 n as a lower limit, and a half value width of both the (018) plane and the (113) plane is 0.200° or less.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: June 16, 2015
    Assignee: JX Nippon Mining & Metals Corporation
    Inventors: Ryuichi Nagase, Yoshio Kajiya
  • Publication number: 20150123029
    Abstract: The present invention provides a positive electrode active material for lithium ion batteries, which realizes a lithium ion battery that is, while satisfying fundamental characteristics of a battery (capacity, efficiency, load characteristics), low in the resistance and excellent in the lifetime characteristics. In the positive electrode active material for lithium ion batteries, the variation in the composition of transition metal that is a main component inside of particles of or between particles of the positive electrode active material, which is defined as a ratio of the absolute value of the difference between a composition ratio inside of the particles of or in a small area between the particles of the transition metal and a composition ratio in a bulk state to the composition ratio in a bulk state of the transition metal, is 5% or less.
    Type: Application
    Filed: December 23, 2014
    Publication date: May 7, 2015
    Inventors: Ryuichi Nagase, Yasuhiro Kawahashi
  • Patent number: 8993160
    Abstract: The present invention provides a positive electrode for lithium ion battery reducing a contact resistance of a battery and achieving an excellent output property. The positive electrode for lithium ion battery comprising a mixed layer comprising: metal forming a current collector, and positive electrode active material dispersed in a state of layer in the metal forming the current collector.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: March 31, 2015
    Assignee: JX Nippon Mining & Metals Corporation
    Inventor: Ryuichi Nagase
  • Patent number: 8748041
    Abstract: Disclosed is a positive electrode active material that provides an improved capacity density. Specifically disclosed is a positive electrode active material for a lithium ion battery with a layered structure represented by Lix(NiyM1-y)Oz (wherein M represents at least one element selected from a group consisting of Mn, Co, Mg, Al, Ti, Cr, Fe, Cu, and Zr; x is in the range from 0.9 to 1.2; y is in the range from 0.3 to 0.95; and z is in the range from 1.8 to 2.4), wherein, when a value obtained by dividing an average of peak intensities observed between 1420 and 1450 cm?1 and between 1470 and 1500 cm?1 by the maximum intensity of a peak appearing between 520 and 620 cm?1 in an infrared absorption spectrum obtained by FT-IR is represented by A, A satisfies the following relational formula: 0.20y?0.05?A?0.53y?0.06.
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: June 10, 2014
    Assignee: JX Nippon Mining & Metals Corporation
    Inventors: Hirohito Satoh, Yoshio Kajiya, Ryuichi Nagase
  • Publication number: 20140034269
    Abstract: The heat exchanger includes: a plurality of heat transfer tubes which is arranged and provided with predetermined gaps; and a plurality of second vibration suppression members 14B which is provided in the gaps and is provided on both sides sandwiching each of the heat transfer tubes 5, and one second vibration suppression member 14B and the other second vibration suppression member 14B of a plurality of second vibration suppression members 14B are provided at different positions in an axial direction of the heat transfer tubes 5 sandwiching the heat transfer tubes 5, the one second vibration suppression member 14B is provided pressing the heat transfer tubes 5; and the other second vibration suppression member 14B is provided pressing the heat transfer tubes 5 from an opposite side of the one second vibration suppression member 14B.
    Type: Application
    Filed: July 3, 2013
    Publication date: February 6, 2014
    Inventors: Hiroshi Shimizu, Yoshihisa Fujiwara, Tomochika Hamamoto, Kenichi Kawanishi, Ikuo Otake, Hiroyuki Fujiwara, Masahito Matsubara, Yoichi Iwamoto, Keisuke Sasajima, Kotoyo Mizuno, Ryuichi Nagase
  • Publication number: 20130175470
    Abstract: An object of the present invention is to reduce the time required for the calcination of a lithium metal salt complex to thereby provide a high-quality cathode active material for a lithium ion battery at low cost. The method for producing a cathode active material for a lithium ion battery comprises the steps of: preparing a lithium metal salt solution slurry containing a lithium salt and a metal salt containing an oxidizer or a metal salt containing ions having an oxygenation effect; drying the lithium metal salt solution slurry to obtain a powder of a lithium metal salt complex containing an oxidizer or a powder of a lithium metal salt complex containing a metal salt containing ions having an oxygenation effect; and calcining the powder.
    Type: Application
    Filed: December 20, 2011
    Publication date: July 11, 2013
    Applicant: JX NIPPON MINING & METALS CORPORATION
    Inventors: Yoshio Kajiya, Yasuhiro Kawahashi, Ryuichi Nagase
  • Publication number: 20120244434
    Abstract: The present invention provides a positive electrode for lithium ion battery reducing a contact resistance of a battery and achieving an excellent output property. The positive electrode for lithium ion battery comprising a mixed layer comprising: metal forming a current collector, and positive electrode active material dispersed in a state of layer in the metal forming the current collector.
    Type: Application
    Filed: December 3, 2010
    Publication date: September 27, 2012
    Applicant: JX NIPPON MINING & METALS CORPORATION
    Inventor: Ryuichi Nagase
  • Publication number: 20120231343
    Abstract: The present invention provides a positive electrode active material for lithium ion batteries, which realizes a lithium ion battery that is, while satisfying fundamental characteristics of a battery (capacity, efficiency, load characteristics), low in the resistance and excellent in the lifetime characteristics. In the positive electrode active material for lithium ion batteries, the variation in the composition of transition metal that is a main component inside of particles of or between particles of the positive electrode active material, which is defined as a ratio of the absolute value of the difference between a composition ratio inside of the particles of or in a small area between the particles of the transition metal and a composition ratio in a bulk state to the composition ratio in a bulk state of the transition metal, is 5% or less.
    Type: Application
    Filed: December 3, 2010
    Publication date: September 13, 2012
    Applicant: JX NIPPON MINING & METALS CORPORATION
    Inventors: Ryuichi Nagase, Yasuhiro Kawahashi
  • Publication number: 20120097287
    Abstract: Provided is duct equipment including a duct body, a heat insulating material, a external cover, a fiber-reinforced sheet, and fiber-reinforced moldings. The duct body includes a duct wall, a duct passage defined by the duct wall, and duct corners formed in the duct wall when viewed in a cross-section in a direction intersecting a direction in which the duct passage extends. The heat insulating material is installed on an outer circumference of the duct body. The external cover includes a external cover wall installed on an outer circumference of the heat insulating material, and external cover corners formed alone the duct corners. The fiber-reinforced sheet is disposed on the outer circumference of the duct body via an adhesive layer. The fiber-reinforced moldings are disposed adjacent to the fiber-reinforced sheet along the external cover corners via adhesive layers, and have a substantially L-shape when viewed in the cross-section.
    Type: Application
    Filed: August 12, 2010
    Publication date: April 26, 2012
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Hiroshi Shimizu, Satoshi Shinma, Nobuki Matsui, Tomoyoshi Maruyama, Ryuichi Nagase, Hiromu Okamoto, Hiroyuki Iseki, Kenji Sato, Seiji Takihana, Takumi Hori, Keigo Nishida
  • Patent number: 8114309
    Abstract: A lithium-manganese composite oxide for a lithium ion battery having a good cycle property at high-temperature and battery property of high capacity is provided. A spinel type lithium-manganese composite oxide for a lithium ion battery represented by a general formula: Li1+xMn2-yMyO4 (wherein M is one or more elements selected from Al, Mg, Si, Ca, Ti, Cu, Ba, W and Pb, and, ?0.1?x?0.2, and 0.06?y?0.3), and when D10, D50 and D90 are defined as a particle size at which point the cumulative frequency of volume reaches 10%, 50% and 90% respectively, d10 is not less than 2 ?m and not more than 5 ?M, d50 is not less than 6 ?m and not more than 9 ?m, and d90 is not less than 12 ?m and not more than 15 ?M, and BET specific surface area thereof is greater than 1.0 m2/g and not more than 2.0 m2/g, and the tap density thereof is not less than 0.5 g/cm3 and less than 1.0 g/cm3.
    Type: Grant
    Filed: April 14, 2008
    Date of Patent: February 14, 2012
    Assignee: JX Nippon Mining & Metals Corporation
    Inventors: Yoshio Kajiya, Hirohito Sato, Ryuichi Nagase
  • Publication number: 20120034525
    Abstract: Disclosed is a positive electrode active material that provides an improved capacity density. Specifically disclosed is a positive electrode active material for a lithium ion battery with a layered structure represented by Lix(NiyM1-y)Oz (wherein M represents at least one element selected from a group consisting of Mn, Co, Mg, Al, Ti, Cr, Fe, Cu, and Zr; x is in the range from 0.9 to 1.2; y is in the range from 0.3 to 0.95; and z is in the range from 1.8 to 2.4), wherein, when a value obtained by dividing an average of peak intensities observed between 1420 and 1450 cm?1 and between 1470 and 1500 cm?1 by the maximum intensity of a peak appearing between 520 and 620 cm?1 in an infrared absorption spectrum obtained by FT-IR is represented by A, A satisfies the following relational formula: 0.20y?0.05?A?0.53y?0.06.
    Type: Application
    Filed: March 3, 2010
    Publication date: February 9, 2012
    Applicant: JX NIPPON MINING & METALS CORPORATION
    Inventors: Hirohito Satoh, Yoshio Kajiya, Ryuichi Nagase
  • Patent number: 8062486
    Abstract: Proposed are a lithium-containing transition metal oxide target formed from a sintered compact of lithium-containing transition metal oxides showing a hexagonal crystalline system in which the sintered compact has a relative density of 90% or higher and an average grain size of 1 ?m or greater and 50 ?m or less, and a lithium-containing transition metal oxide target formed from a sintered compact of lithium-containing transition metal oxides showing a hexagonal crystalline system in which the intensity ratio of the (003) face, (101) face and (104) face based on X-ray diffraction using CuK? ray satisfies the following conditions: (1) Peak intensity ratio of the (101) face in relation to the (003) face is 0.4 or higher and 1.1 or lower; and (2) Peak ratio of the (101) face in relation to the (104) face is 1.0 or higher.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: November 22, 2011
    Assignee: JX Nippon Mining & Metals Corporation
    Inventors: Ryuichi Nagase, Yoshio Kajiya
  • Publication number: 20110065002
    Abstract: Provided is a positive electrode active material for a lithium ion battery, wherein the oil absorption of NMP (N-methylpyrrolidone) measured with a method that is compliant with JIS K5101-13-1 is 30 mL or more and 50 mL or less per 100 g of powder, and wherein [the positive electrode active material] is represented with LiaFewNixMnyCozO2 (1.0<a/(w+x+y+z)<1.3, 0.8<w+x+y+z<1.1) having a spinel structure or a layered structure, and includes at least three or more components among the components of Fe, Ni, Mn, and Co.
    Type: Application
    Filed: October 26, 2009
    Publication date: March 17, 2011
    Applicant: JX NIPPON MINING & METALS CORPORATION
    Inventor: Ryuichi Nagase