Patents by Inventor Naoki Fukuda
Naoki Fukuda 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).
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Patent number: 11959123Abstract: The present invention aims to provide a novel method that can quantify diaminopimelic acid-containing bacteria in a test sample. The present invention relates to a method of quantifying diaminopimelic acid-containing bacteria in a test sample, including a step of quantifying the diaminopimelic acid-containing bacteria, using, as an index, the amount of diaminopimelic acid derived from the diaminopimelic acid-containing bacteria in the test sample.Type: GrantFiled: March 9, 2020Date of Patent: April 16, 2024Assignee: SUNTORY HOLDINGS LIMITEDInventors: Yosuke Sato, Naoki Kasajima, Toshihiko Fukuda, Masayuki Ida
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Publication number: 20240112346Abstract: A rotation state of an object obtained from an input video of a plurality of frames in time series is estimated by using an object image obtained by excluding at least a part of a region common to the plurality of frames from an image corresponding to the object.Type: ApplicationFiled: January 28, 2021Publication date: April 4, 2024Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Dan MIKAMI, Susumu YAMAMOTO, Makio KASHINO, Naoki SAIJO, Masumi YAMAGUCHI, Takehiro FUKUDA
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Publication number: 20240104750Abstract: A target estimation image which is an image of a target at a time point t+w·u obtained by spinning the object in an object image at a time point t obtained from an input video of a plurality of frames in time-series by w unit time on the basis of a hypothesis of spin state and an object image at the time point t+w·u obtained from the input video are used, to estimate the spin state of the object by selecting a hypothesis of spin state and w in which likelihood of the target estimation image becomes high from among a plurality of hypotheses of spin states and a plurality of w whose absolute values are two or more, wherein an absolute value of w is an integer of 2 or more and u is a unit time.Type: ApplicationFiled: January 28, 2021Publication date: March 28, 2024Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Dan MIKAMI, Susumu YAMAMOTO, Makio KASHINO, Naoki SAIJO, Masumi YAMAGUCHI, Takehiro FUKUDA
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Patent number: 11919995Abstract: An epoxy resin, comprising an epoxy compound having two or more mesogenic structures, and having a loss tangent of 1 or more at 35° C. before curing.Type: GrantFiled: February 18, 2019Date of Patent: March 5, 2024Assignee: RESONAC CORPORATIONInventors: Naoki Maruyama, Tomoko Higashiuchi, Kazumasa Fukuda, Hideyuki Katagi, Yuki Nakamura, Yoshitaka Takezawa
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Publication number: 20240069055Abstract: A target estimation image which is an image of a target at a time point t+w·u obtained by spinning the object in an object image which is an image of the object at a time point t obtained from an input video in time-series by w unit time on the basis of a hypothesis of spin state and an object image at the time point t+w·u obtained from the input video are used, to estimate a spin state of the object by selecting a hypothesis of spin state and w in which likelihood of the target estimation image becomes high from among a plurality of hypotheses of spin states and a plurality of w, wherein an absolute value of W is an integer of 1 or more and u is a unit time.Type: ApplicationFiled: January 28, 2021Publication date: February 29, 2024Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Dan MIKAMI, Naoki SAIJO, Masumi YAMAGUCHI, Takehiro FUKUDA, Susumu YAMAMOTO, Makio KASHINO
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Publication number: 20240066379Abstract: Information for displaying information representing rotation axes of balls seen from a first point side or a second point side in regard to one or more motions of the balls moving from the first point side to the second point side is output, and information for displaying information representing rotation axes of the balls seen from an outer side located in a direction that is orthogonal to a virtual straight line connecting the first point to the second point in regard to the motions is output.Type: ApplicationFiled: January 6, 2021Publication date: February 29, 2024Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Dan MIKAMI, Takehiro FUKUDA, Naoki SAIJO, Masumi YAMAGUCHI, Makio KASHINO, Susumu YAMAMOTO
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Patent number: 11834033Abstract: A power regeneration device 21 that converts the power of a main engine DC line 16 connected to a main engine power generator 12 through a rectification circuit 14 to supply the converted power to an accessory DC line 34 connected to an accessory power generator 31 through a rectification circuit 32 includes a plurality of power conversion modules 221 to 22N configured such that input sections 221a to 22Na are connected in series. The main engine power generator 12 and a power consumption device 15 are controlled such that a voltage input to the power regeneration device 21 does not exceed a voltage upper limit value Vm and a portion between a positive electrode terminal (+) and a negative electrode terminal (?) of each of the input sections of the power conversion modules to be stopped is short-circuited by a bypass device and the voltage upper limit value Vm is decreased when some of the plurality of power conversion modules 221 to 22N are stopped.Type: GrantFiled: November 27, 2019Date of Patent: December 5, 2023Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Mitsuhiro Kadota, Masatsugu Arai, Takayuki Satou, Naoki Fukuda
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Publication number: 20230261591Abstract: When regeneration operation is being performed, electric power on a main-machine side is supplied to an auxiliary-machine side, a voltage on the auxiliary-machine side is controlled to become a first voltage value predetermined on the basis of operating voltage specifications of an auxiliary apparatus, a generator on the auxiliary-machine side is deactivated to stop supply of electric power to the auxiliary-machine side, and electric power on the auxiliary-machine side is supplied to a power storage apparatus.Type: ApplicationFiled: May 28, 2021Publication date: August 17, 2023Inventors: Mitsuhiro KADOTA, Yuuichi KUNITOMO, Atsushi KITAGUCHI, Takaaki TANAKA, Naoki FUKUDA
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Publication number: 20220258593Abstract: To provide an electric vehicle capable of reducing heat generation of the switching elements while achieving energy saving, the electric vehicle includes: an engine 11; a first generator 12 driven by the engine; a first rectifier circuit 14 connected to the output of the first generator; a first DC line 16 to receive the DC output of the first rectifier circuit; a driving motor 10 connected to the first DC line; a power converter 20 configured to convert voltage of the first DC line; a second DC line 34 to receive the DC output subjected to voltage conversion by the power converter; an auxiliary device 33 connected to the second DC line; and a controller 40 configured to control the power converter.Type: ApplicationFiled: July 7, 2020Publication date: August 18, 2022Inventors: Mitsuhiro KADOTA, Masatsugu ARAI, Atsushi KITAGUCHI, Naoki FUKUDA
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Patent number: 11396839Abstract: A hydraulic drive fan control device is provided with a variable displacement hydraulic pump, a hydraulic motor, a hydraulic drive fan that is driven by the hydraulic motor, a flow amount control valve, a rotational speed detector that detects a rotational speed of an engine, and a controller. The controller outputs a first valve control signal to the flow amount control valve and outputs a first pump control signal to the hydraulic pump to rotate the hydraulic drive fan at a first rotational speed, and outputs a second valve control signal to the flow amount control valve and outputs a second pump control signal to the hydraulic pump, thereby stopping the rotation of the hydraulic drive fan.Type: GrantFiled: September 21, 2018Date of Patent: July 26, 2022Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Takaaki Tanaka, Masatsugu Arai, Takayuki Sato, Naoki Fukuda, Jun Ikeda, Ryuji Kouno
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Patent number: 11332115Abstract: A power regeneration system of a work vehicle includes: a first generator (12) and a second generator (31) that are driven by an engine (11); a first electric circuit (C1) for supplying electric power to traveling motors (10L, 10R); a second electric circuit (C2) for supplying electric power to an auxiliary device (35); a voltage step down converter (21) providing electric power from the first electric circuit to the second electric circuit; and a controller (51) that determines whether a travel mode of the work vehicle is a powering mode or a regeneration mode in order to control driving of the voltage step down converter. If the travel mode is the regeneration mode, the controller provides the regenerative power from the first electric circuit through the voltage step down converter to the second electric circuit, in order to drive the auxiliary device with the regenerative power.Type: GrantFiled: June 4, 2018Date of Patent: May 17, 2022Assignee: HITACHI CONSTRUCTION MACHINERY CO., LTD.Inventors: Shintarou Tanaka, Masatsugu Arai, Naoki Fukuda, Takaaki Tanaka, Yukiaki Shimizu
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Publication number: 20220056833Abstract: A hydraulic drive fan control device is provided with a variable displacement hydraulic pump, a hydraulic motor, a hydraulic drive fan that is driven by the hydraulic motor, a flow amount control valve, a rotational speed detector that detects a rotational speed of an engine, and a controller. The controller outputs a first valve control signal to the flow amount control valve and outputs a first pump control signal to the hydraulic pump to rotate the hydraulic drive fan at a first rotational speed, and outputs a second valve control signal to the flow amount control valve and outputs a second pump control signal to the hydraulic pump, thereby stopping the rotation of the hydraulic drive fan.Type: ApplicationFiled: September 21, 2018Publication date: February 24, 2022Inventors: Takaaki TANAKA, Masatsugu ARAI, Takayuki SATO, Naoki FUKUDA, Jun IKEDA, Ryuji KOUNO
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Publication number: 20220001854Abstract: A power regeneration device 21 that converts the power of a main engine DC line 16 connected to a main engine power generator 12 through a rectification circuit 14 to supply the converted power to an accessory DC line 34 connected to an accessory power generator 31 through a rectification circuit 32 includes a plurality of power conversion modules 221 to 22N configured such that input sections 221a to 22Na are connected in series. The main engine power generator 12 and a power consumption device 15 are controlled such that a voltage input to the power regeneration device 21 does not exceed a voltage upper limit value Vm and a portion between a positive electrode terminal (+) and a negative electrode terminal (?) of each of the input sections of the power conversion modules to be stopped is short-circuited by a bypass device and the voltage upper limit value Vm is decreased when some of the plurality of power conversion modules 221 to 22N are stopped.Type: ApplicationFiled: November 27, 2019Publication date: January 6, 2022Inventors: Mitsuhiro KADOTA, Masatsugu ARAI, Takayuki SATOU, Naoki FUKUDA
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Patent number: 11173890Abstract: To provide a power regeneration system for a working vehicle that can effectively use a regenerative electric energy. A first electric circuit for supplying an electric power generated by the first generator to a traveling motor, a voltage detector for detecting an actual voltage of the first electric circuit, a second electric circuit for supplying an electric power generated by a second generator to an auxiliary device, a step-down device connected to the first electric circuit and the second electric circuit, and a controller are provided. The controller estimates the voltage of the first electric circuit after a predetermined time has elapsed from the present time, based on information on a traveling state of a work vehicle and the actual voltage detected by the voltage detector, and outputs a drive command to the step-down device when the estimated voltage is equal to or more than a threshold.Type: GrantFiled: February 23, 2018Date of Patent: November 16, 2021Assignee: HITACHI CONSTRUCTION MACHINERY CO., LTD.Inventors: Naoki Fukuda, Masatsugu Arai, Yukiaki Shimizu, Takaaki Tanaka, Shintarou Tanaka
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Patent number: 11149832Abstract: A differential hypoid gear, a pinion gear, and paired hypoid gears formed by a combination thereof are provided. The differential hypoid gear includes a ring-shaped main body and a tooth-forming surface, and has a chemical component composition including C: 0.15-0.30 mass %, Si: 0.55-1.00 mass %, Mn: 0.50-1.20 mass %, Cr: 0.50-1.50 mass %, Al: 0.020-0.080 mass %, B: 0.0005-0.0050 mass %, Ti: 0.01-0.08 mass %, N: 0.0020-0.0100 mass %, Mo: 0.25 mass % or less, and Nb: less than 0.10 mass %, the remainder being Fe and unavoidable impurities. The chemical component composition satisfies Formulae 1 and 2. The differential hypoid gear has a metallographic structure including mainly tempered martensite. A martensite ratio at an inside of a dedendum differs between an end portion of a tooth and a central portion of the tooth within a range of 15% or less. A core hardness of the dedendum at the central portion falls within 350-500 HV.Type: GrantFiled: November 24, 2020Date of Patent: October 19, 2021Assignees: AICHI STEEL CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takayoshi Sugiura, Yuta Iwamoto, Naoki Fukuda, Yasuhiro Fukuda, Masaaki Kondo
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Patent number: 11124075Abstract: A dump truck 100 including: an engine 1; a generator 10 driven by the engine 1; and a pair of driving wheels 3L and 3R arranged to the left and right of a vehicle body frame 7 includes: a traveling electric motor 12L including a plurality of electric motors 12La, 12Lb, and 12Lc that are coupled to the driving wheel 3L and simultaneously drive the driving wheel 3L; and a traveling electric motor 12R including a plurality of electric motors 12Ra, 12Rb, and 12Rc that are coupled to the driving wheel 3R and simultaneously drive the driving wheel 3R. Thereby, drive systems corresponding to loads of dump trucks or the like can be configured using identical components.Type: GrantFiled: June 19, 2018Date of Patent: September 21, 2021Assignee: HITACHI CONSTRUCTION MACHINERY CO., LTD.Inventors: Satoru Kaneko, Shinji Sugimoto, Takayoshi Nakamura, Tadashi Osaka, Masatsugu Arai, Naoki Fukuda
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Publication number: 20210180671Abstract: A differential hypoid gear, a pinion gear, and paired hypoid gears formed by a combination thereof are provided. The differential hypoid gear includes a ring-shaped main body and a tooth-forming surface, and has a chemical component composition including C: 0.15-0.30 mass %, Si: 0.55-1.00 mass %, Mn: 0.50-1.20 mass %, Cr: 0.50-1.50 mass %, Al: 0.020-0.080 mass %, B: 0.0005-0.0050 mass %, Ti: 0.01-0.08 mass %, N: 0.0020-0.0100 mass %, Mo: 0.25 mass % or less, and Nb: less than 0.10 mass %, the remainder being Fe and unavoidable impurities. The chemical component composition satisfies Formulae 1 and 2. The differential hypoid gear has a metallographic structure including mainly tempered martensite. A martensite ratio at an inside of a dedendum differs between an end portion of a tooth and a central portion of the tooth within a range of 15% or less. A core hardness of the dedendum at the central portion falls within 350-500 HV.Type: ApplicationFiled: November 24, 2020Publication date: June 17, 2021Applicants: AICHI STEEL CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takayoshi SUGIURA, Yuta IWAMOTO, Naoki FUKUDA, Yasuhiro FUKUDA, Masaaki KONDO
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Publication number: 20200180588Abstract: A power regeneration system of a work vehicle includes: a first generator (12) and a second generator (31) that are driven by an engine (11); a first electric circuit (C1) for supplying electric power to traveling motors (10L, 10R); a second electric circuit (C2) for supplying electric power to an auxiliary device (35); a voltage step down converter (21) providing electric power from the first electric circuit to the second electric circuit; and a controller (51) that determines whether a travel mode of the work vehicle is a powering mode or a regeneration mode in order to control driving of the voltage step down converter. If the travel mode is the regeneration mode, the controller provides the regenerative power from the first electric circuit through the voltage step down converter to the second electric circuit, in order to drive the auxiliary device with the regenerative power.Type: ApplicationFiled: June 4, 2018Publication date: June 11, 2020Inventors: Shintarou TANAKA, Masatsugu ARAI, Naoki FUKUDA, Takaaki TANAKA, Yukiaki SHIMIZU
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Publication number: 20200156483Abstract: A dump truck 100 including: an engine 1; a generator 10 driven by the engine 1; and a pair of driving wheels 3L and 3R arranged to the left and right of a vehicle body frame 7 includes: a traveling electric motor 12L including a plurality of electric motors 12La, 12Lb, and 12Lc that are coupled to the driving wheel 3L and simultaneously drive the driving wheel 3L; and a traveling electric motor 12R including a plurality of electric motors 12Ra, 12Rb, and 12Rc that are coupled to the driving wheel 3R and simultaneously drive the driving wheel 3R. Thereby, drive systems corresponding to loads of dump trucks or the like can be configured using identical components.Type: ApplicationFiled: June 19, 2018Publication date: May 21, 2020Inventors: Satoru KANEKO, Shinji SUGIMOTO, Takayoshi NAKAMURA, Tadashi OSAKA, Masatsugu ARAI, Naoki FUKUDA
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Patent number: 10583743Abstract: In a regenerative braking device of a dump truck comprising an engine, a first generator and a second generator driven by the engine, at least one travel motor driven by generated electric power of the first generator and at least one fan motor to which generated electric power of the second generator is inputted via a first rectifier circuit, the regenerative braking device comprises: a resistive element to which regenerating electric power from the at least one travel motor in regenerative braking is supplied and which is cooled by at least one fan driven by the at least one fan motor and converts electric energy into heat energy and dissipates heat; and a DC/DC converter that inputs a part of the regenerating electric power which is supplied to the resistive element to an output line of the first rectifier circuit via a second rectifier circuit.Type: GrantFiled: September 8, 2016Date of Patent: March 10, 2020Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Tomonori Takada, Takanobu Ikari, Takashi Ikimi, Akihiro Nakamura, Masatsugu Arai, Naoki Fukuda, Takaaki Tanaka