Patents Assigned to Japan Aerospace Exploration Agency
  • Patent number: 11115008
    Abstract: Provided are a latch circuit and a flip-flop circuit each having more excellent tolerance to single event upset (SEU). The single event upset (SEU)-tolerant latch circuit of the present invention is configured such that three transistors for redundancy are added to each of eight transistors constituting a conventional DICE latch circuit, at respective positions consisting of a serial position, a parallel position and a parallel-serial position so as to form a four-transistor circuit in which a serially duplicated circuit is duplicated in parallel, and each of a first data input part and a second data input part is also made dually redundant.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: September 7, 2021
    Assignees: Japan Aerospace Exploration Agency, High-Reliability Engineering & Components Corporation
    Inventors: Akifumi Maru, Satoshi Kuboyama, Tsukasa Ebihara, Akiko Makihara
  • Publication number: 20210223116
    Abstract: To provide a measurement data processing device that can improve resolution by applying a correction operation to low-resolution microwave radiometer output data. A measurement data processing device is capable of improving resolution by multiplying a measurement data group of a microwave radiometer by a weighted vector and adding up the measurement data group. The weighted vector solves an inverse problem based on a mathematical model for forming the sensitivity of an antenna as a Gaussian curved surface. Optimization is applied by repeatedly executing, outside an xy coordinate of a target antenna sensitivity distribution function table, a correction operation for minimizing integrated values of a positive remainder sensitivity function, which is data having a positive value a negative remainder sensitivity function, which is data having a negative value.
    Type: Application
    Filed: July 20, 2020
    Publication date: July 22, 2021
    Applicant: JAPAN AEROSPACE EXPLORATION AGENCY
    Inventors: Takashi MAEDA, Naoya TOMII
  • Patent number: 11062175
    Abstract: A reduced attention state estimation system includes an eyeball movement and eyelid activity measurement unit that measures an eyeball movement and an eyelid activity of a subject to obtain eyeball movement and eyelid activity data, a section determination unit that determines an eye opening section, an eye closing section, an eye-blinking section and a cluster section based on the eyeball movement and eyelid activity data, an eyeball movement and eyelid activity-related information calculation unit that calculates a sharpness of microsaccade or the like for each eye opening section based on the eyeball movement and eyelid activity data, and an attention assessment unit that determines an attention assessment or the like for an eye opening/cluster section, which is an eye opening section and cluster section, based on the sharpness of microsaccade or the like.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: July 13, 2021
    Assignees: Japan Aerospace Exploration Agency, National Center of Neurology and Psychiatry
    Inventors: Takashi Abe, Satoshi Furukawa, Katsuhiko Ogata, Kazuo Mishima, Shingo Kitamura
  • Patent number: 11043750
    Abstract: Provided is an antenna including: a primary radiator configured to radiate radio waves; and a parabolic reflector configured to reflect the radio waves radiated by the primary radiator and has an aperture diameter reduced to be equal to or smaller than an aperture diameter with which no null points are generated in an antenna pattern in a semi-sphere where the radio waves are reflected and radiated.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: June 22, 2021
    Assignee: JAPAN AEROSPACE EXPLORATION AGENCY
    Inventor: Toshihiro Sezai
  • Patent number: 11022518
    Abstract: A wall surface pressure measurement structure measures a wall surface pressure in a duct. Measurement holes are formed in different positions in a circumferential direction on an inspection surface of a wall surface of the duct. The inspection surface is orthogonal to an extending direction of the duct. A pressure chamber communicating with the measurement holes is provided on an outer peripheral side of the duct. The pressure chamber is coupled to a pressure gauge via a pressure pipe.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: June 1, 2021
    Assignees: SUBARU CORPORATION, Japan Aerospace Exploration Agency
    Inventors: Toshiteru Mitomo, Ryota Takaya, Yoshikazu Makino
  • Patent number: 10988233
    Abstract: [Object] To provide a wing achieving reduction of friction drag and easy to design and also easy to manufacture and an aircraft including such a wing. [Solving Means] A wing 1 is typically used as a main wing of an aircraft 100. The wing 1 is a swept-back wing having a swept-back angle A. The wing 1 is configured such that a surface pressure (pressure distribution (Cp)) on an upper surface of a vicinity of a leading edge 11 in a fluid increases from a wing root 17 to a wing tip 15. A cross-flow component of an external streamline of a surface of the wing 1 is reduced in the vicinity of the leading edge 11, and boundary layer transition is not easily induced in the vicinity of the leading edge 11. With this, friction drag caused by cross-flow instability can be reduced.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: April 27, 2021
    Assignee: JAPAN AEROSPACE EXPLORATION AGENCY
    Inventors: Yoshine Ueda, Naoko Tokugawa
  • Patent number: 10962082
    Abstract: Provided is an adjusting method for a resonance frequency of a vibration isolator, the vibration isolator including first to n-th elastic member groups and/or an n+1-th elastic member group, the first to n-th elastic member groups and/or the n+1-th elastic member group being located on an xy plane of an xyz coordinate system, and an xy coordinate system of the xyz coordinate system being a coordinate system obtained by, when a tensor of inertia I with respect to an XYZ coordinate system having an origin in a center of gravity of a vibration sensing side structure or a vibration source side structure is represented as I, rotating an XY coordinate system by ?=tan?1(2IXY/(IXX?IYY)) around a Z axis, the adjusting method including, when rigidity Ki of the first to n-th elastic member groups is represented as [ K i ] = [ k i ? _ ? xx 0 0 0 k i ? _ ? yy 0 0 0 k i ? _ ? zz ] , rigidity Kn+1 of the n+1-th elastic member group is represented as [ K n + 1
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: March 30, 2021
    Assignee: Japan Aerospace Exploration Agency
    Inventors: Yasutoshi Hyakusoku, Takafumi Kajikawa, Qinzhong Shi, Daichi Todaka
  • Publication number: 20210008491
    Abstract: Provided is a method for removing CO2 comprising: supplying a gas to be processed containing CO2, N2 and O2 to a feed side of a CO2/O2 selective permeation membrane within a temperature range of 15° C. to 50° C.
    Type: Application
    Filed: December 27, 2017
    Publication date: January 14, 2021
    Applicants: Renaissance Energy Research Corporation, Japan Aerospace Exploration Agency
    Inventors: Osamu OKADA, Masaaki TERAMOTO, Tamotsu NONOUCHI, Nobuaki HANAI, Junya MIYATA, Yasato KIYOHARA, Masato SAKURAI, Shinichi FURUKAWA
  • Patent number: 10882605
    Abstract: The present invention provides a riblet structure that further reduces drag, which is a sum of turbulent friction drag and pressure drag, and an object including such a riblet structure. An object such as an aircraft, plant, and pipeline includes a wavelike riblet pattern on a surface. The wavelike riblet pattern includes a large number of wavelike riblets. Each of the large number of wave riblets includes a wavelike ridge line, and a height thereof changes cyclically with respect to a fluid flow direction. With such a configuration, drag, which is a sum of turbulent friction drag and pressure drag, can be further reduced.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: January 5, 2021
    Assignee: JAPAN AEROSPACE EXPLORATION AGENCY
    Inventors: Kie Okabayashi, Yasuhiro Koshioka, Akira Nishizawa, Mitsuru Kurita, Hidetoshi Iijima
  • Patent number: 10883449
    Abstract: Provided is a jet system capable of regulating a pressure of a jet substance without using any high-pressure gas supply subsystem. In a storage section for storing therein a jet substance such as fuel or oxidizer, a pressurizing substance such as liquefied gas is stored in addition to the jet substance, to enable the jet substance to be supplied from the storage section according to pressurization from the pressurizing substance. A jet operation is performed while an internal pressure of the storage section lowered along with discharge of the jet substance therefrom is at least partially recovered by at least a part of the pressurizing substance vaporized in the storage section.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: January 5, 2021
    Assignee: Japan Aerospace Exploration Agency
    Inventors: Osamu Mori, Junichiro Kawaguchi, Toshihiro Chujo
  • Patent number: 10870502
    Abstract: A vapor jet system to continuously jet vapors while suppressing cavitation. One vapor jet system includes a liquid storage part for separately storing two or more kinds of mutually insoluble liquids; a jet orifice; and a jet control part. Jetting the vapors is from a state where pressure in the space storing the vapors in the liquid storage part is higher than the saturated vapor pressure in any of the two or more kinds of liquids. Alternatively, a vapor jet system can include a fluid storage part storing one kind of liquid and at least one kind of inactive gas having a composition different from the liquid; a similar jet orifice; and a similar jet control part. Jetting the vapors and inactive gas(es) is (are) from a state where pressure in a vapor storing space in the fluid storage part is higher than the saturated vapor pressure in the liquid.
    Type: Grant
    Filed: May 11, 2015
    Date of Patent: December 22, 2020
    Assignee: Japan Aerospace Exploration Agency
    Inventors: Junichiro Kawaguchi, Osamu Mori, Takayuki Yamamoto, Norizumi Motooka, Toshihiro Chujo
  • Publication number: 20200378924
    Abstract: A sensing device that senses a substance to be sensed as a gas by causing a piezoelectric resonator to adsorb the substance to be sensed, includes: a substrate, a thermoelectric element unit, a support plate, and a base portion. A sensing module unit in which a substrate, a thermoelectric element unit, and a support plate are integrated is removably disposed to a base portion that performs at least one of heat supply and heat dissipation to the thermoelectric element unit.
    Type: Application
    Filed: May 26, 2020
    Publication date: December 3, 2020
    Applicants: NIHON DEMPA KOGYO CO., LTD., JAPAN AEROSPACE EXPLORATION AGENCY
    Inventors: Hiroyuki KUKITA, Tsuyoshi SHIOBARA, Yuki YANAGISAWA, Shohei NAKAGAWA, Eiji MIYAZAKI, Yuta TSUCHIYA
  • Patent number: 10833673
    Abstract: An operation adjustment method of an SOI device comprises steps of: (a) obtaining a drain current-substrate bias voltage characteristic of an NMOS transistor for a source-gate voltage of 0V; (b) obtaining a lowest substrate bias voltage which turns on the NMOS transistor from the drain current-substrate bias voltage characteristic; (c) determining an upper limit of a substrate bias voltage of a PMOS transistor as a voltage obtained by subtracting a built-in potential of a pn junction from the lowest substrate bias voltage; and (d) determining the substrate bias voltage of the PMOS transistor as a positive voltage lower than the upper limit. Reduction in the power consumption and maintenance of the radiation tolerance are both achieved for the SOI device.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: November 10, 2020
    Assignees: MITSUBISHI HEAVY INDUSTRIES, LTD., JAPAN AEROSPACE EXPLORATION AGENCY
    Inventors: Daisuke Matsuura, Takanori Narita, Masahiro Kato, Daisuke Kobayashi, Kazuyuki Hirose, Osamu Kawasaki, Yuya Kakehashi, Taichi Ito
  • Patent number: 10815390
    Abstract: An imide resin composition including a terminal-modified imide oligomer of General Formula (1) and a thermoplastic aromatic polyimide of General Formula (2). (In Formula (1), either R1 or R2 shows a phenyl group and the other shows a hydrogen atom; R3 and R4 show a divalent residue of aromatic diamine; R5 and R6 show a tetravalent residue of aromatic tetracarboxylic acid; m and n satisfy relationships of m?1, n?0, 1?m+n?20, and 0.05?m/(m+n)?1; and an arrangement of repeating units may be either a block or random.) (In Formula (2), R1 and R2 show a divalent residue of aromatic diamine; R3 shows a tetravalent residue of aromatic tetracarboxylic acid; m and n satisfy relationships of m?1 and n?0, and an arrangement of repeating units may be either a block or random.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: October 27, 2020
    Assignees: Kaneka Corporation, Japan Aerospace Exploration Agency
    Inventors: Masahiko Miyauchi, Yuichi Ishida, Toshio Ogasawara, Rikio Yokota
  • Patent number: 10787998
    Abstract: A cooling mechanism includes a bottom wall (22) in contact with a combustion chamber, an upper wall (30), and a cooling passage (40) arranged between the bottom wall (22) and the upper wall (30). The cooling passage (40) includes a first passage (50) extending to a first direction, a second passage (60) extending to the first direction, and a connection section (70) connected with the first passage (50) and the second passage (60). The second passage (60) is arranged to have an offset to the first passage (50) in a second direction perpendicular to the first direction and along the bottom wall (22).
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: September 29, 2020
    Assignees: MITSUBISHI HEAVY INDUSTRIES, LTD., JAPAN AEROSPACE EXPLORATION AGENCY
    Inventors: Daiki Watanabe, Masaki Adachi, Hiroyuki Kobayashi, Akihide Kurosu, Hideto Kawashima, Nobuki Negoro
  • Patent number: 10746620
    Abstract: A pressure measure sheet having a sheet shape and having a pressure measure surface, the pressure measure sheet being adapted to be arranged on a surface of a measured object, includes: a plurality of pressure measure ports provided through the pressure measure surface; at least one connection port adapted to be connected to a side of a pressure measure device; and a coupler part including a plurality of through-tubes penetrating the plurality of pressure measure ports and the at least one connection port, in which the pressure measure sheet includes a region in which the plurality of through-tubes are arrayed in nonparallel.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: August 18, 2020
    Assignees: JAPAN AEROSPACE EXPLORATION AGENCY, TOKYO FLUID RESEARCH CO., LTD.
    Inventors: Masataka Kohzai, Yuzuru Yokokawa, Kazuomi Yamamoto, Yasushi Ito, Hideo Omotani
  • Patent number: 10737927
    Abstract: There is provided a liquid supply apparatus eliminating the need for a power supply, having relatively light weight and small footprint, and ensuring a stable liquid supply. The liquid supply apparatus includes a first support member, a second support member, a balloon having one end supported by the first support member and the other end supported by the second support member, and a casing having a constant longitudinal length. The balloon is disposed in the casing and is configured so as to be able to hold a liquid therein and discharge the liquid therefrom. When the balloon holds the liquid, the one end and the other end of the balloon are positioned in the case.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: August 11, 2020
    Assignees: TSUKADA MEDICAL RESEARCH CO., LTD., JAPAN AEROSPACE EXPLORATION AGENCY, MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Osamu Tsukada, Akihiko Nakasa, Kengo Kanai, Masato Shimizu, Haruna Koike, Nami Hatakeyama, Naoki Takizawa, Masaki Shirakawa, Hiroyasu Mizuno, Atsuko Homma, Dai Shiba, Akane Yumoto, Hirochika Murase, Makoto Ohira
  • Patent number: 10734818
    Abstract: An equalization circuit system having a system configuration simplified through reduction of the total number of switches is provided. An electricity storage cell voltage equalization circuit is operated with a square wave voltage generated at a switching node in an electricity storage module voltage equalization circuit as an input voltage, thereby achieving an electricity storage cell voltage equalization circuit without a switch. Typically, the electricity storage cell voltage equalization circuit may be a resonance voltage-doubling rectifier circuit, and the electricity storage module voltage equalization circuit may be a switched capacitor, a resonance voltage-doubling rectifier circuit, a buck-boost converter or the like.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: August 4, 2020
    Assignees: JAPAN CAPACITOR INDUSTRIAL CO., LTD., Japan Aerospace Exploration Agency
    Inventors: Masatoshi Uno, Akio Kukita, Kazushige Ito, Tsutomu Sekido
  • Patent number: 10697638
    Abstract: A fuel injection device includes: a pilot fuel injector disposed at a radially center position; a main fuel injector having an annular shape and disposed so as to encircle the pilot fuel injector; a fuel injection portion that injects a fuel into a combustion chamber; a fuel supply unit that supplies a fuel to the fuel injection portion; a fuel introduction portion secured to a combustor housing that has the combustion chamber therein and introduces a fuel into the fuel supply unit; and an injector housing that is supported by the fuel introduction portion and covers front portions of the pilot fuel injector and the main fuel injector. The fuel supply unit has a base supported by the fuel introduction portion, and an annular body supported by the injector housing via a support pin so as to be radially movable relative to the injector housing.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: June 30, 2020
    Assignees: KAWASAKI JUKOGYO KABUSHIKI KAISHA, JAPAN AEROSPACE EXPLORATION AGENCY
    Inventors: Masayoshi Kobayashi, Ryusuke Matsuyama, Kenta Yamaguchi, Hideki Ogata, Takeo Nishiura, Hitoshi Fujiwara
  • Patent number: D903573
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: December 1, 2020
    Assignee: JAPAN AEROSPACE EXPLORATION AGENCY
    Inventor: Eiji Shima