Patents by Inventor Masaharu Tanaka
Masaharu Tanaka 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: 11474088Abstract: The present invention relates to a method for determining the origin of glutamic acid in a sample and, in a broader sense, relates to a method for determining the origin of an amino acid. The present invention makes it possible to measure the stable isotope ratio, with a considerably higher accuracy than that of conventional methods, by measuring the ?13C of glutamic acid (amino acid) by elemental analysis-stable isotope ratio mass spectrometry (EA-IRMS) and measuring the ?15N by gas chromatography-stable isotope ratio mass spectrometry (GC-IRMS). In addition, the present invention makes it possible to determine the origin of glutamic acid (amino acid) by comparing the stable isotope ratio of the glutamic acid (amino acid) whose origin is unclear with the stable isotope ratio of glutamic acid (amino acid) whose origin is clear.Type: GrantFiled: January 31, 2018Date of Patent: October 18, 2022Assignee: NISSIN FOODS HOLDINGS CO., LTD.Inventors: Masaharu Tanaka, Yoichi Yatsukawa, Kazuhiro Kobayashi, Soichi Tanabe, Mitsuru Tanaka
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Patent number: 11364948Abstract: There is provided an electric power steering device, including: a reverse steering detection unit configured to determine start of reverse steering when a magnitude of a rotational speed of a motor is equal to or smaller than a set speed, a rotational acceleration of the motor is in a direction of causing the rotational speed of the motor to become 0, and a magnitude of the rotational acceleration of the motor is equal to or larger than a set acceleration; and a current command control unit configured to output a current command for the motor based on the steering torque or the rotational speed of the motor, in which the current command control unit is configured to increase a transfer gain from input to output by the current command control unit when the reverse steering detection unit determines start of the reverse steering.Type: GrantFiled: March 27, 2017Date of Patent: June 21, 2022Assignee: Mitsubishi Electric CornorationInventors: Isao Kezobo, Kenta Tanaka, Akira Furukawa, Masaharu Tanaka, Akiyoshi Takashima
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Patent number: 11338844Abstract: An electric power steering apparatus includes a high-frequency compensation unit that outputs a high-frequency compensation signal obtained by filtering the high-frequency components of an assist torque command signal and multiplying the filtered high-frequency components by a gain; a corrected steering torque signal obtained by negatively or positively feeding back the high-frequency compensation signal to a steering torque signal is inputted to an assist torque command calculation unit; the assist torque command calculation unit outputs the assist torque command signal in accordance with the corrected steering torque signal.Type: GrantFiled: May 24, 2016Date of Patent: May 24, 2022Assignee: Mitsubishi Electric CornorationInventors: Isao Kezobo, Kenta Tanaka, Masaharu Tanaka, Akiyoshi Takashima
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Publication number: 20200031385Abstract: There is provided an electric power steering device, including: a reverse steering detection unit configured to determine start of reverse steering when a magnitude of a rotational speed of a motor is equal to or smaller than a set speed, a rotational acceleration of the motor is in a direction of causing the rotational speed of the motor to become 0, and a magnitude of the rotational acceleration of the motor is equal to or larger than a set acceleration; and a current command control unit configured to output a current command for the motor based on the steering torque or the rotational speed of the motor, in which the current command control unit is configured to increase a transfer gain from input to output by the current command control unit when the reverse steering detection unit determines start of the reverse steering.Type: ApplicationFiled: March 27, 2017Publication date: January 30, 2020Applicant: Mitsubishi Electric CorporationInventors: Isao KEZOBO, Kenta TANAKA, Akira FURUKAWA, Masaharu TANAKA, Akiyoshi TAKASHIMA
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Publication number: 20190360983Abstract: The present invention relates to a method for determining the origin of glutamic acid in a sample and, in a broader sense, relates to a method for determining the origin of an amino acid. The present invention makes it possible to measure the stable isotope ratio, with a considerably higher accuracy than that of conventional methods, by measuring the ?13C of glutamic acid (amino acid) by elemental analysis-stable isotope ratio mass spectrometry (EA-IRMS) and measuring the ?15N by gas chromatography-stable isotope ratio mass spectrometry (GC-IRMS). In addition, the present invention makes it possible to determine the origin of glutamic acid (amino acid) by comparing the stable isotope ratio of the glutamic acid (amino acid) whose origin is unclear with the stable isotope ratio of glutamic acid (amino acid) whose origin is clear.Type: ApplicationFiled: January 31, 2018Publication date: November 28, 2019Inventors: Masaharu TANAKA, Yoichi YATSUKAWA, Kazuhiro KOBAYASHI, Soichi TANABE, Mitsuru TANAKA
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Publication number: 20190100234Abstract: An electric power steering apparatus includes a high-frequency compensation unit that outputs a high-frequency compensation signal obtained by filtering the high-frequency components of an assist torque command signal and multiplying the filtered high-frequency components by a gain; a corrected steering torque signal obtained by negatively or positively feeding back the high-frequency compensation signal to a steering torque signal is inputted to an assist torque command calculation unit; the assist torque command calculation unit outputs the assist torque command signal in accordance with the corrected steering torque signal.Type: ApplicationFiled: May 24, 2016Publication date: April 4, 2019Applicant: Mitsubishi Electric CorporationInventors: Isao KEZOBO, Kenta TANAKA, Masaharu TANAKA, Akiyoshi TAKASHIMA
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Patent number: 8887870Abstract: A breather device includes a main body that includes a breather chamber with an inner bottom surface; a first communicating portion provided at the main body; a second communicating portion provided at the main body and at a position above the first communicating portion in a vertical direction and away from the first communicating portion in a horizontal direction; and a downward gradient provided at the inner bottom surface of the breather chamber, the downward gradient guides the oil that has entered the breather chamber through the first communicating portion toward the first communicating portion.Type: GrantFiled: June 27, 2008Date of Patent: November 18, 2014Assignees: Aisin Aw Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Naoya Okada, Shyusaku Kitamura, Atsushi Nakamura, Naoki Itazu, Toshihiro Fukumasu, Hiromitu Metugi, Masaharu Tanaka
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Patent number: 8262093Abstract: An oil seal for sealing a hollow rotary shaft in a power transmission apparatus, wherein the rotary shaft is formed with an internal flow passage through which oil flows and constituted such that the oil flies out as the rotary shaft rotates, including: a fixed portion that is fixedly attached to a case of the power transmission apparatus; a seal portion that seals the rotary shaft at a position that is axially offset position from the fixed portion and allows the rotary shaft to rotate; and a radiator portion that is formed from a metallic material between the fixed portion and the seal portion, receives the oil that flies out as the rotary shaft rotates, and dissipates heat generated by the seal portion by exchanging heat with the oil.Type: GrantFiled: March 30, 2009Date of Patent: September 11, 2012Assignees: Aisin AW Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Kazutoshi Omagari, Teruhito Fukuoka, Kenji Nagai, Naruhito Nagase, Youhei Habata, Hiroya Mizuta, Masaharu Tanaka
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Patent number: 8241181Abstract: An ECU executes a program including the steps of: setting a first throttle opening degree (S100), setting a low gear torque LTE based on an engine torque map for low gear having the first throttle opening degree and an engine speed (rpm) as parameters (S200), setting a high gear torque HTE based on an engine torque map for high gear having the first throttle opening degree and the engine speed as parameters (S300), setting a target engine torque TTE by combining the low gear torque LTE and the high gear torque HTE by using a correction ratio KGR determined by a gear step (S400), and controlling the engine to produce a required torque set by using the target engine torque TTE (S700). In this way a torque can be obtained in accordance with the engine speed.Type: GrantFiled: June 6, 2007Date of Patent: August 14, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventors: Naoto Moriya, Masaharu Tanaka, Masami Kondo, Hiroyasu Honda
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Patent number: 8159100Abstract: There is provided an integrated electric compressor that is improved in reliability. Bus bar connection is employed for electrical connection between a power board 16 and the power source side and between the power board 16 and the motor side, and welding is employed for joining a bus bar to a capacitor 13 and a reactor 14, for joining board-side terminal parts of the bus bar to PN terminals 20a and 20b, and for joining UVW terminals 25a, 25b and 25c to housing-side terminals 28a, 28b and 28c. By employing resistance welding for the welding, the terminals can be joined to each other with stabilized quality. Further, since flat joint plates are provided on one end side of the housing-side terminals 28a, 28b and 28c, and the UVW terminals 25a, 25b and 25c are welded thereto, reliable joints between terminals can also be attained in these portions.Type: GrantFiled: September 28, 2007Date of Patent: April 17, 2012Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Masaharu Tanaka, Koji Nakano, Takashi Nakagami, Makoto Hattori, Takayuki Takashige, Kazuki Niwa, Hiroyuki Kamitani
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Patent number: 8019507Abstract: In an electric power steering control system, a phase compensator of the steering torque is made of an analog circuit and an anti-phase compensator is made by the software of a microcomputer, thereby to eliminate the changes in the gain and the phase by the phase compensator of the analog circuit near the oscillation frequency, so that the steering torque signal equivalent to that of no phase compensation necessary for the computation at the observer is computed from the phase-compensated steering torque signal.Type: GrantFiled: December 7, 2010Date of Patent: September 13, 2011Assignee: Mitsubishi Electric CorporationInventors: Masahiko Kurishige, Takayuki Kifuku, Seiji Sakanishi, Masaharu Tanaka, Seiji Sawada, Akinobu Sugiyama, Hanako Hamada
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Patent number: 7983815Abstract: In an electric power steering control system, a phase compensator of the steering torque is made of an analog circuit and an anti-phase compensator is made by the software of a microcomputer, thereby to eliminate the changes in the gain and the phase by the phase compensator of the analog circuit near the oscillation frequency, so that the steering torque signal equivalent to that of no phase compensation necessary for the computation at the observer is computed from the phase-compensated steering torque signal.Type: GrantFiled: March 12, 2007Date of Patent: July 19, 2011Assignee: Mitsubishi Electric CorporationInventors: Masahiko Kurishige, Takayuki Kifuku, Seiji Sakanishi, Masaharu Tanaka, Seiji Sawada, Akinobu Sugiyama, Hanako Hamada
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Publication number: 20110137525Abstract: Intended is to solve the problem of an increase in the cost of an electric power steering control system, the oscillations of which are suppressed by estimating and feeding back the oscillation frequency components of a motor rotating speed through an observer from a steering torque signal and a current signal for driving a motor, no matter whether a phase compensator might be made of an analog circuit or a software. In order to solve this problem, there is provided the electric power steering control system, in which the phase compensator of the steering torque is made of an analog circuit and in which an anti-phase compensator is made over the software of a microcomputer, thereby to eliminate the changes in the gain and the phase by the phase compensator of the analog circuit near the oscillation frequency, so that the steering torque signal equivalent to that of no phase compensation necessary for the computation at the observer is computed from the phase-compensated steering torque signal.Type: ApplicationFiled: December 7, 2010Publication date: June 9, 2011Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Masahiko KURISHIGE, Takayuki KIFUKU, Seiji SAKANISHI, Masaharu TANAKA, Seiji SAWADA, Akinobu SUGIYAMA, Hanako HAMADA
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Patent number: 7925407Abstract: The adjustment method includes an estimation step in which valve characteristics of the linear solenoid valves fitted to the hydraulic control circuit are measured, and estimated linear valve characteristics of the linear solenoid valves in isolation state are estimated based on the measured valve characteristics using predetermined correlations; and a correction value output step in which estimated linear piston-end pressures of the hydraulically-driven friction engagement elements immediately before the hydraulically-driven friction engagement elements are engaged are calculated based on the estimated linear valve characteristics, and the correction values that are applied to the control command values to adjust the drive currents supplied from the valve control unit to the linear solenoid valves are calculated based on differences between the estimated linear piston-end pressures and nominal piston-end pressures, and then output.Type: GrantFiled: September 12, 2007Date of Patent: April 12, 2011Assignee: Toyota Jidosha Kabushiki KaishaInventors: Masami Kondo, Masaharu Tanaka, Takayuki Kawakami, Naoto Moriya
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Patent number: 7904030Abstract: For example, in a conventional high frequency switch used for a mobile phone and so on, high frequency distortion is caused by a diode which is turned off upon transmission. A high frequency switch includes a switch circuit for switching transmission and reception performed via a transmitting terminal and receiving terminals, said switch circuit having a diode turned off upon transmission, and a low-pass filter for suppressing high frequency distortion caused by the diode upon transmission.Type: GrantFiled: March 27, 2002Date of Patent: March 8, 2011Assignee: Panasonic CorporationInventors: Kazuhide Uriu, Toru Yamada, Hideaki Nakakubo, Masaharu Tanaka
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Patent number: 7861688Abstract: A control apparatus of an internal combustion engine includes an idle torque calculating portion, a target torque setting portion, and a target throttle opening amount calculating portion. The idle torque calculating portion and the target throttle opening amount calculating portion calculate the idle torque and the target throttle opening amount when the internal combustion engine is in a non-idling state, respectively, using a common physical quantity relating to an operating state of the internal combustion engine.Type: GrantFiled: January 25, 2007Date of Patent: January 4, 2011Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hideki Kubonoya, Masaharu Tanaka, Toshiya Oishi, Masami Kondo
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Publication number: 20100269784Abstract: A control apparatus of an internal combustion engine includes an idle torque calculating portion, a target torque setting portion, and a target throttle opening amount calculating portion. The idle torque calculating portion and the target throttle opening amount calculating portion calculate the idle torque and the target throttle opening amount when the internal combustion engine is in a non-idling state, respectively, using a common physical quantity relating to an operating state of the internal combustion engine.Type: ApplicationFiled: January 25, 2007Publication date: October 28, 2010Applicant: Toyota Jidosha Kabushiki KaishaInventors: Hideki Kubonoya, Masaharu Tanaka, Toshiya Oishi, Masami Kondo
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Publication number: 20100235047Abstract: Intended is to solve the problem of an increase in the cost of an electric power steering control system, the oscillations of which are suppressed by estimating and feeding back the oscillation frequency components of a motor rotating speed through an observer from a steering torque signal and a current signal for driving a motor, no matter whether a phase compensator might be made of an analog circuit or a software. In order to solve this problem, there is provided the electric power steering control system, in which the phase compensator of the steering torque is made of an analog circuit and in which an anti-phase compensator is made over the software of a microcomputer, thereby to eliminate the changes in the gain and the phase by the phase compensator of the analog circuit near the oscillation frequency, so that the steering torque signal equivalent to that of no phase compensation necessary for the computation at the observer is computed from the phase-compensated steering torque signal.Type: ApplicationFiled: March 12, 2007Publication date: September 16, 2010Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Masahiko Kurishige, Takayuki Kifuku, Seiji Sakanishi, Masaharu Tanaka, Seiji Sawada, Akinobu Sugiyama, Hanako Hamada
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Patent number: 7785231Abstract: A gear shift controlling apparatus of an automatic transmission for a vehicle has a synchronization-time engagement pressure correcting device that, before synchronization of gear-shifting, makes an increase correction of an engagement pressure of the disengaged-side engaging element by a first prescribed amount, to cause an input shaft rotational speed immediately before synchronizing of the automatic transmission to approach a rotational speed calculated by multiplying an output shaft rotational speed by a gear ratio of a gear after gear-shifting the automatic transmission.Type: GrantFiled: September 5, 2007Date of Patent: August 31, 2010Assignee: Toyota Jidosha Kabushiki KaishaInventors: Nobufusa Kobayashi, Toshio Sugimura, Tomohiro Asami, Takaaki Tokura, Tomohiro Kondo, Masami Kondo, Masaharu Tanaka
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Patent number: 7678017Abstract: In a shift control device and a shift control method for an automatic transmission, when the shift range is switched from a non-travel range to a travel range, a squat control of temporarily forming a high-speed step that is smaller in speed change ratio than the first speed change step by engaging a first engagement element and a second engagement element, and then forming the first speed change step by releasing the second engagement element. In the case of standing-start of the vehicle in the high-speed step, the squat control is ended before the first speed change step is formed by releasing the second engagement element.Type: GrantFiled: May 14, 2008Date of Patent: March 16, 2010Assignee: Toyota Jidosha Kabushiki KaishaInventors: Naoto Moriya, Masaharu Tanaka, Yoshio Hasegawa, Tomohiro Asami