Patents by Inventor Wataru Yamamoto
Wataru Yamamoto 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: 11230281Abstract: Provided are a driving force control method and device for a hybrid vehicle, each capable of effectively absorbing torque fluctuation of an engine while suppressing deterioration in energy efficiency. The driving force control device for a hybrid vehicle comprises a PCM configured to: estimate an average torque output by an engine; estimate a torque fluctuation component of the torque output by the engine; set a countertorque for suppressing the estimated torque fluctuation component; and control an electric motor to output the set countertorque, wherein the PCM is operable, under the condition that the average torque output by the internal combustion engine is constant, to set a negative control gain such that, as an engine speed becomes higher, the absolute value of the control gain becomes smaller, and then to set the countertorque based on a product of the estimated torque fluctuation component and the control gain.Type: GrantFiled: February 23, 2018Date of Patent: January 25, 2022Assignee: Mazda Motor CorporationInventors: Kentaro Furusho, Hirofumi Nishimura, Tsuyoshi Goto, Yuta Enokizono, Wataru Yamamoto
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Patent number: 11202996Abstract: A filtration filter comprises a metallic mesh having a circumferential shape and radially inner and outer portions. The metallic mesh is adapted to filter out a filtration target object contained in a fluid passing through the membrane. First and second frame members hold the outer portion there between so as to create first and second bent sections separated by a transition section extending between the first and second bent sections. The transition section includes at least one streaked projection.Type: GrantFiled: July 15, 2019Date of Patent: December 21, 2021Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Takashi Kondo, Masaru Banju, Seiichi Matsumoto, Seiji Kamba, Wataru Yamamoto, Yoshiji Okamoto
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Publication number: 20210376817Abstract: A phase-variable frequency multiplier includes: a 90-degree divider for dividing an input signal into an I-signal and a Q-signal; an amplitude setting circuit for distributing each of the I-signal and the Q-signal to two paths, setting amplitudes of two of four signals including the two distributed I-signals and the two distributed Q-signals depending on a phase shift amount of the input signal, and outputting as set signals, the four signals including the signals with the set amplitudes; a first mixer for multiplying one of the two I-signals included in the set signals by one of the two Q-signals included in the set signals to generate a first signal having a frequency being twice the frequency of the input signal; a second mixer for multiplying the other of the two I-signals included in the set signals by the other of the two Q-signals included in the set signals to generate a second signal with an amplitude ratio with respect to the first signal, being a tangent or a reciprocal of a tangent of the phase shType: ApplicationFiled: August 18, 2021Publication date: December 2, 2021Applicant: Mitsubishi Electric CorporationInventors: Wataru YAMAMOTO, Koji TSUTSUMI, Sho IKEDA, Masaomi TSURU
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Patent number: 11121651Abstract: Provided are a driving force control method and device for a hybrid vehicle, each capable of effectively absorbing torque fluctuation of an engine while suppressing deterioration in energy efficiency. The driving force control device for a hybrid vehicle comprises a PCM configured to: estimate an average torque output by an engine; estimate a torque fluctuation component of the torque output by the engine; set a countertorque for suppressing the estimated torque fluctuation component; and control an electric motor to output the set countertorque, wherein the PCM is operable, under a condition that an engine speed is constant, to set the countertorque such that, as the average torque output by an engine becomes larger, the absolute value of the countertorque becomes smaller.Type: GrantFiled: February 23, 2018Date of Patent: September 14, 2021Assignee: Mazda Motor CorporationInventors: Hirofumi Nishimura, Tsuyoshi Goto, Kentaro Furusho, Yuta Enokizono, Wataru Yamamoto
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Publication number: 20210254236Abstract: There is provided a plating apparatus capable of suitably measuring a micro-throwing power. A first plating apparatus (1A) includes: a first anode (12A) disposed in a first plating bathtub (11A); an insulating substrate (4) having a hole (5) and disposed in the first plating bathtub (11A); a pair of first cathodes (13AX, 13AY), each cathode being provided in the insulating substrate (4) at a bottom portion of the hole (5) and at a surface on an opening side of the hole (5); a first plating power source (14A) configured to supply an electric current between the first anode (12) and the pair of first cathodes (13AX, 13AY); and a first electric current measuring circuit (22A) configured to measure respective values of electric currents flowing through the pair of first cathodes (13AX, 13AY).Type: ApplicationFiled: March 13, 2018Publication date: August 19, 2021Applicant: YAMAMOTO-MS Co., Ltd.Inventors: Wataru YAMAMOTO, Kimiko KOIWA, Katsunori AKIYAMA, Yoshiaki HOSHINO
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Patent number: 11052337Abstract: A filtration filter includes a porous metal film that filters out a filtration object contained in a fluid, and a support base member that is disposed on at least one main surface of the porous metal film and that supports the porous metal film. The support base member has an opening that exposes a part of the porous metal film. An inner peripheral surface of the opening has undulations formed along its periphery.Type: GrantFiled: September 29, 2017Date of Patent: July 6, 2021Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Wataru Yamamoto, Takashi Kondo, Masaru Banju
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Patent number: 10988855Abstract: A plating apparatus capable of preventing difference in an electrode potential between the pair of cathodes and a disturbance in a current distribution in Haring cell test and so on is provided. A plating apparatus (1) has an anode (12) and a pair of cathodes (13X) (13Y) which are provided in a plating bathtub (11); a plating power source (14) to supply an electric current between the anode (12) and the pair of cathodes (13X) (13Y); and a feedback circuit (21) to have an electrode potential of a first cathode (13X) equal to an electrode potential of a second cathode (13Y) while a summation of electric currents flowing through the pair of cathodes (13X) (13Y) is kept constant.Type: GrantFiled: December 28, 2016Date of Patent: April 27, 2021Assignee: YAMAMOTO-MS Co., Ltd.Inventors: Wataru Yamamoto, Kimiko Koiwa, Katsunori Akiyama, Masazumi Ishiguro, Yoshiaki Hoshino
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Publication number: 20210099144Abstract: A variable gain amplifier includes a first transistor group which is connected to an input terminal and an output terminal, and which amplifies a signal from the input terminal to output the amplified signal to the output terminal; a second transistor group connected to the input terminal; a third transistor group connected to the output terminal; and a controller configured to control the first transistor group, the second transistor group, and the third transistor group so that a total number of the number of transistors to be turned on in the first transistor group and the second transistor group is kept at a constant value, and total numbers of transistors to be turned on in the first transistor group and in the third transistor group are the same.Type: ApplicationFiled: December 15, 2020Publication date: April 1, 2021Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Wataru YAMAMOTO, Koji TSUTSUMI, Mitsuhiro SHIMOZAWA
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Patent number: 10960331Abstract: A cell-capturing filter that filters out cells includes a metallic porous film having a plurality of through holes that extend through a first main surface and a second main surface, which are opposite to each other. The metallic porous film includes a filtering portion including the plurality of through holes, and a frame portion disposed to surround an outer periphery of the filtering portion. In the filtering portion, a first film thickness of the metallic porous film at a center of the filtering portion is smaller than a second film thickness of the metallic porous film at a portion located closer to the frame portion than the center of the filtering portion.Type: GrantFiled: August 21, 2018Date of Patent: March 30, 2021Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Wataru Yamamoto, Masaru Banju, Takashi Kondo
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Patent number: 10918999Abstract: In a cell-capturing filter including a metal porous membrane, degradation over time is determined earlier. A cell-capturing filter includes a metal porous membrane having a plurality of through-holes that penetrate between two principal surfaces facing each other. The metal porous membrane is made of an alloy of nickel and an element selected from the group consisting of gold, platinum, and palladium, or a metal containing nickel as a main component. A metal containing copper as a main component is attached to a part of either one of the principal surfaces of the metal porous membrane. By checking a state change of the metal containing copper as a main component, degradation over time of the metal porous membrane can be determined earlier.Type: GrantFiled: October 31, 2018Date of Patent: February 16, 2021Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Masaru Banju, Wataru Yamamoto, Junko Watanabe, Takashi Kondo
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Publication number: 20200231139Abstract: Provided are a driving force control method and device for a hybrid vehicle, each capable of effectively absorbing torque fluctuation of an engine while suppressing deterioration in energy efficiency. The driving force control device for a hybrid vehicle comprises a PCM configured to: identify a speed reduction ratio in a driving force transmission mechanism; estimate an average torque output by an engine; estimate a torque fluctuation component of the torque output by the engine; set a countertorque for suppressing the estimated torque fluctuation component; and control an electric motor to output the set countertorque, wherein the PCM is operable, under a condition that the average torque output by the engine and an engine speed are constant, to set the countertorque such that, as the speed reduction ratio becomes smaller, the absolute value of the countertorque becomes larger.Type: ApplicationFiled: February 23, 2018Publication date: July 23, 2020Inventors: Wataru Yamamoto, Hirofumi Nishimura, Tsuyoshi Goto, Kentaro Furusho, Yuta Enokizono
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Publication number: 20200231137Abstract: Provided are a driving force control method and device for a hybrid vehicle, each capable of effectively absorbing torque fluctuation of an engine while suppressing deterioration in energy efficiency. The driving force control device for a hybrid vehicle comprises a PCM configured to: estimate an average torque output by an engine; estimate a torque fluctuation component of the torque output by the engine; set a countertorque for suppressing the estimated torque fluctuation component; and control an electric motor to output the set countertorque, wherein the PCM is operable, under the condition that the average torque output by the internal combustion engine is constant, to set a negative control gain such that, as an engine speed becomes higher, the absolute value of the control gain becomes smaller, and then to set the countertorque based on a product of the estimated torque fluctuation component and the control gain.Type: ApplicationFiled: February 23, 2018Publication date: July 23, 2020Inventors: Kentaro Furusho, Hirofumi Nishimura, Tsuyoshi Goto, Yuta Enokizono, Wataru Yamamoto
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Patent number: 10697079Abstract: A plating device comprising: a water tank into which a plating solution is poured; a tubular nozzle being disposed in the water tank and serving as an anode; a to-be-plated object being disposed in the water tank so as to be opposed to the nozzle and serving as a cathode; a direct-current power source to apply a voltage between the nozzle and the to-be-plated object; and a pump to circulate the plating solution such that the plating solution poured into the water tank passes through the nozzle and is ejected onto the to-be-plated object. A perforated plate member, which includes a through-hole having a smaller diameter than the inside diameter of the nozzle, is arranged on the inflow side of the nozzle such that the through-hole is opposed to an open region of the nozzle.Type: GrantFiled: December 20, 2016Date of Patent: June 30, 2020Assignee: Yamamoto-MS Co., Ltd.Inventors: Wataru Yamamoto, Katsunori Akiyama, Chikako Suzuki, Masazumi Ishiguro
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Patent number: 10612164Abstract: A method of cleaning an oxidation oven that subjects a polyacrylonitrile-based precursor fiber for carbon fiber to an oxidation treatment in an oxidizing atmosphere, wherein the oxidation oven has a mechanism for circulating an oxidizing gas internally, the method including the steps of: causing a liquid to come in contact with dust adhering to a wall surface of the oxidation oven so that pressure in a direction perpendicular to the wall surface is 2 MPa or more; discharging the liquid out of the oxidation oven to discharge dust peeled off from the wall surface out of the oxidation oven; and circulating an oxidizing gas having a temperature of 40° C. or higher in the oxidation oven.Type: GrantFiled: January 29, 2018Date of Patent: April 7, 2020Assignee: Toray Industries, Inc.Inventors: Yusuke Kuji, Wataru Yamamoto, Masaomi Uchiyama
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Publication number: 20200071856Abstract: A method of cleaning an oxidation oven that subjects a polyacrylonitrile-based precursor fiber for carbon fiber to an oxidation treatment in an oxidizing atmosphere, wherein the oxidation oven has a mechanism for circulating an oxidizing gas internally, the method including the steps of: causing a liquid to come in contact with dust adhering to a wall surface of the oxidation oven so that pressure in a direction perpendicular to the wall surface is 2 MPa or more; discharging the liquid out of the oxidation oven to discharge dust peeled off from the wall surface out of the oxidation oven; and circulating an oxidizing gas having a temperature of 40° C. or higher in the oxidation oven.Type: ApplicationFiled: January 29, 2018Publication date: March 5, 2020Inventors: Yusuke Kuji, Wataru Yamamoto, Masaomi Uchiyama
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Publication number: 20200067429Abstract: Provided are a driving force control method and device for a hybrid vehicle, each capable of effectively absorbing torque fluctuation of an engine while suppressing deterioration in energy efficiency. The driving force control device for a hybrid vehicle comprises a PCM configured to: estimate an average torque output by an engine; estimate a torque fluctuation component of the torque output by the engine; set a countertorque for suppressing the estimated torque fluctuation component; and control an electric motor to output the set countertorque, wherein the PCM is operable, under a condition that an engine speed is constant, to set the countertorque such that, as the average torque output by an engine becomes larger, the absolute value of the countertorque becomes smaller.Type: ApplicationFiled: February 23, 2018Publication date: February 27, 2020Inventors: Hirofumi NISHIMURA, Tsuyoshi GOTO, Kentaro FURUSHO, Yuta ENOKIZONO, Wataru YAMAMOTO
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Publication number: 20200062235Abstract: Provided are a driving force control method and device for a hybrid vehicle, each capable of effectively absorbing torque fluctuation of an engine while suppressing deterioration in energy efficiency. The driving force control device for a hybrid vehicle comprises a PCM configured to: estimate an average torque output by an engine; estimate a torque fluctuation component of the torque output by the engine; set a countertorque for suppressing the estimated torque fluctuation component; and control an electric motor to output the set countertorque, wherein the PCM is operable, under a condition that an engine speed is constant, to set the countertorque such that, as the average torque output by the engine becomes larger, the absolute value of the countertorque becomes larger.Type: ApplicationFiled: February 23, 2018Publication date: February 27, 2020Inventors: Tsuyoshi GOTO, Hirofumi NISHIMURA, Kentaro FURUSHO, Yuta ENOKIZONO, Wataru YAMAMOTO
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Publication number: 20200001859Abstract: Provided are a driving force control method and device for a hybrid vehicle, each capable of effectively absorbing torque fluctuation of an engine while suppressing deterioration in energy efficiency. The driving force control device for a hybrid vehicle comprises a PCM configured to: estimate an average torque output by an engine; estimate a torque fluctuation component of the torque output by the engine; set a countertorque for suppressing the estimated torque fluctuation component; and control an electric motor to output the set countertorque, wherein the PCM is operable, under a condition that the average torque output by the engine is constant, to set the countertorque such that, as an engine speed of the engine becomes larger, the absolute value of the countertorque becomes larger.Type: ApplicationFiled: February 23, 2018Publication date: January 2, 2020Inventors: Yuta Enokizono, Hirofumi Nishimura, Tsuyoshi Goto, Kentaro Furusho, Wataru Yamamoto
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Publication number: 20190367006Abstract: Provided are a driving force control method and device for a hybrid vehicle, each capable of effectively absorbing torque fluctuation of an engine while suppressing deterioration in energy efficiency. The driving force control device for a hybrid vehicle comprises a PCM configured to: identify a vehicle acceleration; estimate an average torque output by an engine; estimate a torque fluctuation component of the torque output by the engine; set a countertorque for suppressing the estimated torque fluctuation component; and control an electric motor to output the set countertorque, wherein the PCM is operable, under a condition that an engine speed and the average torque output by the engine are constant, to set the countertorque such that, as the absolute value of the vehicle acceleration becomes smaller, the absolute value of the countertorque becomes larger.Type: ApplicationFiled: February 23, 2018Publication date: December 5, 2019Inventors: Kentaro Furusho, Hirofumi Nishimura, Tsuyoshi Goto, Yuta Enokizono, Wataru Yamamoto
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Publication number: 20190352793Abstract: A plating apparatus capable of preventing difference in an electrode potential between the pair of cathodes and a disturbance in a current distribution in Haring cell test and so on is provided. A plating apparatus (1) has an anode (12) and a pair of cathodes (13X) (13Y) which are provided in a plating bathtub (11); a plating power source (14) to supply an electric current between the anode (12) and the pair of cathodes (13X) (13Y); and a feedback circuit (21) to have an electrode potential of a first cathode (13X) equal to an electrode potential of a second cathode (13Y) while a summation of electric currents flowing through the pair of cathodes (13X) (13Y) is kept constant.Type: ApplicationFiled: December 28, 2016Publication date: November 21, 2019Inventors: Wataru YAMAMOTO, Kimiko KOIWA, Katsunori AKIYAMA, Masazumi ISHIGURO, Yoshiaki HOSHINO