Patents Assigned to National University Corporation, Tokyo University of Marine Science and Technology
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Publication number: 20170015265Abstract: A lateral rollover risk warning device can report vehicle rollover risk in real time during traveling with no need for inputting radius of a curved path in advance. It includes a first acceleration sensor detecting an external force applied in up-down direction of a vehicle body; an angular velocity sensor detecting a rotation around vehicle axis of vehicle body; and a second acceleration sensor detecting an external force in right-left direction of vehicle body, with an arithmetic part using detection results given by first acceleration sensor and angular velocity sensor to calculate a limit index of vehicle being led to a rollover, and using detection result given by second acceleration sensor to calculate a comparative index to be compared with limit index in real time; and a reporting part using limit index and comparative index to report lateral rollover risk warning information telling the rollover risk.Type: ApplicationFiled: February 25, 2015Publication date: January 19, 2017Applicant: National University Corporation Tokyo University of Marine Science and TechnologyInventor: Yutaka WATANABE
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Patent number: 9541389Abstract: A center-of-gravity detecting system includes a motion detector for detecting a vertical motion of a travelling object and a horizontal motion of the travelling object, and an arithmetic unit that calculates a center-of-gravity location of the travelling object using the frequency of a vertical motion of the travelling object, a frequency of the horizontal motion of the travelling object, a central angle of the horizontal motion of the travelling object, and the width of the traveling object. The arithmetic unit calculates a center-of-gravity location, using the frequency of the vertical motion, a frequency of the horizontal motion, the center-of-gravity location, and the length of the travelling object in the travel direction.Type: GrantFiled: May 17, 2011Date of Patent: January 10, 2017Assignee: NATIONAL UNIVERSITY CORPORATION TOKYO UNIVERSITY OF MARINE SCIENCE AND TECHNOLOGYInventor: Yutaka Watanabe
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Patent number: 9523622Abstract: Provided is a lateral rollover limit detection system which can determine the lateral rollover danger of a structure for which the weight or the weight distribution has not been clarified. A placement board, springs, and detection object are provided as a structure in which the placement board is supported with springs on both sides of an oscillation central axis with an acceleration sensor for detecting the reciprocating motion in an up-down direction of the placement board, and an arithmetic part which, on the basis of the inclination angle of the placement board in a direction of rotation around the oscillation central axis with respect to the horizontal plane in a standstill state of the detection object and the detection result by the acceleration sensor, calculates a limit center-of-gravity height beyond which the detection object is rolled over for a center-of-gravity location on the placement board of the structure being provided.Type: GrantFiled: December 4, 2012Date of Patent: December 20, 2016Assignee: NATIONAL UNIVERSITY CORPORATION TOKYO UNIVERSITY OF MARINE SCIENCE AND TECHNOLOGYInventor: Yutaka Watanabe
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Publication number: 20160265960Abstract: A loading weight detection device applicable to various mobile bodies can accurately detect loading weight with minimized number of input variables.Type: ApplicationFiled: October 22, 2014Publication date: September 15, 2016Applicant: National University Corporation Tokyo University of Marine Science and TechnologyInventor: Yutaka WATANABE
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Patent number: 9306677Abstract: Problem to be Solved To provide an underwater communication system in which no holes need to be drilled in a shell body of a hermetically-sealed structure whose object is to operate underwater. Solution The underwater communication system includes: a hermetically-sealed structure 2 including a shell body 5 having a watertight structure and that is disposed underwater; a transmission unit 9 that is arranged in the hermetically-sealed structure 2 and that can perform wireless transmission; a non-conductive propagation medium 4 that includes one end portion being brought into contact with the outside of the shell body 5 having the watertight structure without making a hole therein; and a reception unit 10 that receives an electrical signal wirelessly transmitted from the transmission unit 9 from the other end portion of the propagation medium 4 that is located distally from the shell body 5.Type: GrantFiled: September 14, 2012Date of Patent: April 5, 2016Assignee: NATIONAL UNIVERSITY CORPORATION TOKYO UNIVERSITY OF MARINE SCIENCE AND TECHNOLOGYInventors: Etsuro Shimizu, Masayoshi Ozawa
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Patent number: 9290781Abstract: The present invention provides a method for producing a composition containing 2-acyl-lysophosphatidylserine, including (a) a step of obtaining a composition containing phosphatidylserine by allowing phospholipase D to act on a raw material containing phosphatidylcholine in the presence of serine and (b) a step of obtaining a composition containing 2-acyl-lysophosphatidylserine by allowing phospholipase A1 to act on the composition containing phosphatidylserine in the presence of one or more additives selected from the group consisting of the following (I), (II), and (III), in which (I) one or more salts selected from the group consisting of sulfate salts, phosphate salts, nitrate salts, citrate salts, and tartarate salts of monovalent cations, (II) a gum, and (III) an emulsifier.Type: GrantFiled: September 26, 2011Date of Patent: March 22, 2016Assignees: National University Corporation Tokyo University of Marine Science and Technology, Meiji Co., Ltd.Inventors: Kazunaga Yazawa, Tomoyuki Susa, Shoji Gotoh, Yasuhito Tashiro, Junichi Kawashima, Shigeyuki Imamura
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Publication number: 20150229168Abstract: Superconducting field poles each include a superconducting coil body formed by spirally winding a superconducting wire material, a ferromagnetic outer magnetic field-deflecting member arranged on an end face of the superconducting coil body at a radially outer side of a rotor, and a ferromagnetic inner magnetic field-deflecting member arranged on an end face of the superconducting coil body at a radially inner side of the rotor.Type: ApplicationFiled: September 5, 2013Publication date: August 13, 2015Applicants: KAWASAKI JUKOGYO KABUSHIKI KAISHA, NATIONAL UNIVERSITY CORPORATION TOKYO UNIVERSITY OF MARINE SCIENCE AND TECHNOLOGYInventors: Yohei Murase, Katsuya Umemoto, Mitsuru Izumi, Keita Tsuzuki
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Patent number: 9046438Abstract: There is provided a highly versatile center-of-gravity detecting system which can accurately detect the center of gravity of not only a container cargo vehicle but also various detection objects. It has a placement board for placing a detection object thereon; springs for supporting the placement board with an elastic force; an acceleration sensor for detecting a reciprocating motion of the detection object in an up-down direction; an angular velocity sensor for detecting a simple pendulum motion of the detection object around a roll direction oscillation central axis; and an X-axis restriction guide part for restricting a movement of the placement board in an X-axis direction, a data processing apparatus calculating a center-of-gravity height in the up-down direction from the roll direction oscillation central axis to the center of gravity of the detection object on the basis of the detection results by the acceleration sensor and the angular velocity sensor.Type: GrantFiled: October 24, 2012Date of Patent: June 2, 2015Assignee: NATIONAL UNIVERSITY CORPORATION TOKYO UNIVERSITY OF MARINE SCIENCE AND TECHNOLOGYInventor: Yutaka Watanabe
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Publication number: 20140340995Abstract: Problem to be Solved To provide an underwater communication system in which no holes need to be drilled in a shell body of a hermetically-sealed structure whose object is to operate underwater. Solution The underwater communication system includes: a hermetically-sealed structure 2 including a shell body 5 having a watertight structure and that is disposed underwater; a transmission unit 9 that is arranged in the hermetically-sealed structure 2 and that can perform wireless transmission; a non-conductive propagation medium 4 that includes one end portion being brought into contact with the outside of the shell body 5 having the watertight structure without making a hole therein; and a reception unit 10 that receives an electrical signal wirelessly transmitted from the transmission unit 9 from the other end portion of the propagation medium 4 that is located distally from the shell body 5.Type: ApplicationFiled: September 14, 2012Publication date: November 20, 2014Applicant: NATIONAL UNIVERSITY CORPORATION TOKYO UNIVERSITY OF MARINE SCIENCE AND TECHNOLOGYInventors: Etsuro Shimizu, Masayoshi Ozawa
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Patent number: 8616587Abstract: A joint includes a housing and a refrigerant tube connected to a refrigerant source and communicated with a target part in a rotating machine. A rotating member is loosely fitted inside with the refrigerant tube and fixed to a rotary part of the rotating machine. A relatively rotating member has a fixed-side member and rotating-side member. The fixed-side member is connected to the refrigerant tube via a refrigerant tube extension section. The rotating-side member is connected to the rotating member via a rotating member extension section. A refrigerant zone is formed by spaces defined between the refrigerant tube and the rotating member, and between the refrigerant tube and rotating member extension sections. A sealing member is installed between the fixed-side and rotating-side members. A vacuum chamber and pressure chamber are defined within the housing.Type: GrantFiled: June 2, 2010Date of Patent: December 31, 2013Assignees: National University Corporation Tokyo University of Marine Science and Technology, Kitano Seiki Co., Ltd.Inventors: Mitsuru Izumi, Motohiro Miki, Masahiro Kitano
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Publication number: 20130132025Abstract: A center-of-gravity detecting system includes a motion detector for detecting a vertical motion of a travelling object and a horizontal motion of the travelling object and an arithmetic unit that calculates a center-of-gravity location of the travelling object using the frequency of a vertical motion of the travelling object, a frequency of the horizontal motion of the travelling object, a central angle of the horizontal motion of the travelling object, and the width of the traveling object. The arithmetic unit calculates a center-of-gravity location, using the frequency of the vertical motion, a frequency of the horizontal motion, the center-of-gravity location, and the length of the travelling object in the travel direction.Type: ApplicationFiled: May 17, 2011Publication date: May 23, 2013Applicant: NATIONAL UNIVERSITY CORPORATION TOKYO UNIVERSITY OF MARINE SCIENCE AND TECHNOLOGYInventor: Yutaka Watanabe
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Publication number: 20120310594Abstract: An inclination angle calculation device comprises a motion detector for detecting motions of a traveling object during travel, in two directions included in a cross-section surface of the traveling object, the two directions being orthogonal with each other; and an arithmetic unit for calculating an inclination angle of the traveling object during travel in the cross-section surface, using a frequency of the motion in one of the two directions and a rolling frequency in the other direction of the two directions.Type: ApplicationFiled: December 3, 2010Publication date: December 6, 2012Applicant: NATIONAL UNIVERSITY CORPORATION TOKYO UNIVERSITY OF MARINE SCIENCE AND TECHNOLOGYInventor: Yutaka Watanabe
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Patent number: 8222385Abstract: In order to examine whether or not a germ cell derived from a donor fish, which has been transplanted into a recipient fish of a different species by a surrogate fish technique, grows or matures in the gonad of the recipient fish, it is necessary to use, as an indicator, a trait that is specifically expressed in the germ cell and can be used to distinguish the recipient fish from the donor fish. Vasa gene, which is a germ cell-specific gene, is specific to a primordial germ cell and a spermatogonium/an oogonium, and it is not expressed in a somatic cell. In the present invention, the Vasa gene sequences of a tuna, a chub mackerel, a spotted mackerel, an eastern little tuna, and a drumfish are determined, and the expression of such gene is used as a marker for a germ cell. In addition, according to the present invention, it is possible to specifically detect only a tuna Vasa gene in Vasa gene sequences that are highly conserved in fishes, without sequencing.Type: GrantFiled: March 26, 2008Date of Patent: July 17, 2012Assignees: National University Corporation Tokyo University of Marine Science Technology, Nippon Suisan Kaisha, Ltd.Inventors: Goro Yoshizaki, Yutaka Takeuchi, Kazue Nagasawa, Kentaro Higuchi, Tetsuro Morita, Naoki Kabeya
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Patent number: 8196334Abstract: A net-mouth inclined trawl-net apparatus includes a substantially rectangular frame and a trawl net attached to the frame. The trawl net is formed of an upper net, a lower net, and a pair of side nets, and the trawl net has a shape formed of a body part of a quadrangular trapezoid shape. Each of the side nets attached to the frame has a longer side and a shorter side as an upper side and a lower side, and a side of each side net defining a net-mouth edge defines a side-net front edge inclination angle relative to a bottom side of an isosceles trapezoid having the shorter side of the side net as a side of the isosceles trapezoid, so that the frame autonomously maintains an inclination angle relative to the vertical axis due to a flow resistance and a lift acting on the net.Type: GrantFiled: March 30, 2007Date of Patent: June 12, 2012Assignee: National University Corporation Tokyo University of Marine Science and TechnologyInventors: Fuxiang Hu, Tadashi Tokai, Daisuke Shiode, Yoshioki Ozeki, Hiroshi Kubota
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Publication number: 20120133126Abstract: Problem to be Solved To provide a small, lightweight, cryo-rotary joint. Solution A joint includes a housing 2, a refrigerant tube 3 connected to a refrigerant source and communicated with a target part in a rotating machine, a rotating member 4 loosely fitted inside with the refrigerant tube and fixed to a rotary part of the rotating machine, and a relatively rotating member 5 having a fixed-side member 5a and rotating-side member 5b, wherein the fixed-side member is connected to the refrigerant tube via a refrigerant tube extension section 3a, the rotating-side member is connected to the rotating member via a rotating member extension section 4a, a refrigerant zone is formed by spaces 7 and 8 defined by the refrigerant tube, rotating member, and refrigerant tube and rotating member extension sections, a sealing member 10 is installed between the fixed-side and rotating-side members, and a vacuum chamber and pressure chamber are defined within the housing.Type: ApplicationFiled: June 2, 2010Publication date: May 31, 2012Applicants: Kitano Seiki Co., Ltd., National University Corporation Tokyo University of Marine Science and TechnologyInventors: Mitsuru Izumi, Motohiro Miki, Masahiro Kitano
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Patent number: 8076894Abstract: The present invention provides a superconductive rotating electric machine drive control system that has higher efficiency and is smaller size and lighter in weight than conventional systems, and also provides a superconductive rotating electric machine drive control method to be implemented in the superconductive rotating electric machine drive control system. By the superconductive rotating electric machine drive control system and the superconductive rotating electric machine drive control method in accordance with the present invention, a control operation is performed so that the field current If2 applied to the superconductive field winding of the synchronous rotating electric machine satisfies an equation for the field current If2 in accordance with the variation of the electric power exchanged between the synchronous rotating electric machine and the power unit.Type: GrantFiled: October 31, 2007Date of Patent: December 13, 2011Assignee: National University Corporation Tokyo University of Marine Science and TechnologyInventors: Mitsuru Izumi, Naoki Maki
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Patent number: 8052977Abstract: The present invention provides a DNA vaccine for carps for inducing protective immunity against Koi herpesvirus (KHV). The DNA vaccine comprises a DNA comprising a nucleotide sequence encoding an immunogenic polypeptide against Koi herpesvirus (KHV) of carps, or an expression vector comprising the DNA as an active ingredient.Type: GrantFiled: January 30, 2007Date of Patent: November 8, 2011Assignee: National University Corporation Tokyo University of Marine Science and TechnologyInventors: Takashi Aoki, Ikuo Hirono
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Publication number: 20110244485Abstract: An object of the present invention is to provide a means for distinguishing between a germ cell derived from a donor (tuna) and a germ cell derived from a recipient in a method for inducing differentiation of a tuna germ cell, wherein a primordial germ cell derived from the tuna is transplanted into an early embryo of the heterologous recipient fish. The present inventors compared a Vasa amino acid sequence of bluefin tuna with those of other fish (black skipjack, skipjack, chub mackerel, blue mackerel, round frigate mackerel and frigate mackerel), identified amino acid sequence regions specific to bluefin tuna, and, by using the amino acid sequences specific to bluefin tuna as antigens, successfully produced monoclonal antibodies specifically recognizing primordial germ cells, spermatogonia, oogonia or oocytes derived from bluefin tuna, thus accomplishing the present invention.Type: ApplicationFiled: September 25, 2009Publication date: October 6, 2011Applicants: National University Corporation Tokyo University of Marine Science and Technology, Nippon Suisan Kaisha, Ltd.Inventors: Goro Yoshizaki, Yutaka Takeuchi, Misako Miwa, Naoki Kabeya
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Patent number: 8020336Abstract: A trawl net layer-by-layer collecting device includes a rectangular cylindrical frame configured to draw a plurality of trawl nets that are arranged in an up and down direction. The frame includes an upper edge to which a net mouth edge of an upper net of the uppermost trawl net is anchored, and a lower edge to which a net mouth of a lower net of the lowermost trawl net is anchored. A pair of vertical bars are disposed on opposed sides of the frame. A slider having opposed ends slidably engaged with the vertical bars, the slider anchoring thereto the net mouth edge of the lower net of the upper trawl net and the net mouth edge of the upper net of the lower trawl net. A net-mouth opening and closing unit is configured to lock the sliders on upper ends of the vertical bars, and unlock the locked sliders one by one; and a controller.Type: GrantFiled: March 30, 2007Date of Patent: September 20, 2011Assignee: National University Corporation Tokyo University of Marine Science and TechnologyInventors: Fuxiang Hu, Tadashi Tokai, Yoshioki Ozeki, Hiroshi Kubota, Chiaki Tomatsu, Tetsuro Ino
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Patent number: 7948776Abstract: There is provided a zero-voltage switching high-frequency inverter capable of supplying a current of a large amplitude operation to a load, while suppressing a main switch current. The zero-voltage switching high-frequency inverter according to the present invention comprises: a first switch S1 and a second switch S2 that are connected in series between power sources Ed; a first capacitor C1, an impedance element R, and an inductor element L that are connected in series between a connecting path connecting the first switch S1 and the second switch S2 and one end of the power sources Ed; and a second capacitor C2 connected in parallel to the impedance element R and the inductor element L that are connected in series.Type: GrantFiled: June 25, 2010Date of Patent: May 24, 2011Assignee: National University Corporation Tokyo University of Marine Science and TechnologyInventor: Yoshihiro Hatanaka