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).

  • Publication number: 20210222399
    Abstract: An electric construction machine that can travel from a work site to charging equipment and prevent the lowering of the work efficiency is provided. An electric hydraulic excavator includes a motor (28) that is driven by power of a battery device (19) and drives a hydraulic pump (29), a controller (37), and a display device (24). The controller (37) computes and stores the amount of consumed power of the motor (28) consumed during the period from the departure of the hydraulic excavator from the charging equipment to arrival at the work site, based on movement information of the hydraulic excavator acquired by a movement information acquiring device. The controller (37) subtracts the amount of consumed power from the amount of stored power of the battery device (19) to compute the amount of power consumable at the work site.
    Type: Application
    Filed: September 28, 2018
    Publication date: July 22, 2021
    Inventors: Takuya NOMURA, Masayuki YUNOUE, Wataru TAKAGI, Hiromu YUKAWA, Yuki YAMAMOTO
  • Patent number: 11052337
    Abstract: 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: Grant
    Filed: September 29, 2017
    Date of Patent: July 6, 2021
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Wataru Yamamoto, Takashi Kondo, Masaru Banju
  • Patent number: 10988855
    Abstract: 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: Grant
    Filed: December 28, 2016
    Date of Patent: April 27, 2021
    Assignee: YAMAMOTO-MS Co., Ltd.
    Inventors: Wataru Yamamoto, Kimiko Koiwa, Katsunori Akiyama, Masazumi Ishiguro, Yoshiaki Hoshino
  • Publication number: 20210099144
    Abstract: 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: Application
    Filed: December 15, 2020
    Publication date: April 1, 2021
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Wataru YAMAMOTO, Koji TSUTSUMI, Mitsuhiro SHIMOZAWA
  • Patent number: 10960331
    Abstract: 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: Grant
    Filed: August 21, 2018
    Date of Patent: March 30, 2021
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Wataru Yamamoto, Masaru Banju, Takashi Kondo
  • Patent number: 10918999
    Abstract: 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: Grant
    Filed: October 31, 2018
    Date of Patent: February 16, 2021
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Masaru Banju, Wataru Yamamoto, Junko Watanabe, Takashi Kondo
  • Publication number: 20200231137
    Abstract: 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: Application
    Filed: February 23, 2018
    Publication date: July 23, 2020
    Inventors: Kentaro Furusho, Hirofumi Nishimura, Tsuyoshi Goto, Yuta Enokizono, Wataru Yamamoto
  • Publication number: 20200231139
    Abstract: 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: Application
    Filed: February 23, 2018
    Publication date: July 23, 2020
    Inventors: Wataru Yamamoto, Hirofumi Nishimura, Tsuyoshi Goto, Kentaro Furusho, Yuta Enokizono
  • Patent number: 10697079
    Abstract: 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: Grant
    Filed: December 20, 2016
    Date of Patent: June 30, 2020
    Assignee: Yamamoto-MS Co., Ltd.
    Inventors: Wataru Yamamoto, Katsunori Akiyama, Chikako Suzuki, Masazumi Ishiguro
  • Patent number: 10612164
    Abstract: 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: Grant
    Filed: January 29, 2018
    Date of Patent: April 7, 2020
    Assignee: Toray Industries, Inc.
    Inventors: Yusuke Kuji, Wataru Yamamoto, Masaomi Uchiyama
  • Publication number: 20200071856
    Abstract: 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: Application
    Filed: January 29, 2018
    Publication date: March 5, 2020
    Inventors: Yusuke Kuji, Wataru Yamamoto, Masaomi Uchiyama
  • Publication number: 20200062235
    Abstract: 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: Application
    Filed: February 23, 2018
    Publication date: February 27, 2020
    Inventors: Tsuyoshi GOTO, Hirofumi NISHIMURA, Kentaro FURUSHO, Yuta ENOKIZONO, Wataru YAMAMOTO
  • Publication number: 20200067429
    Abstract: 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: Application
    Filed: February 23, 2018
    Publication date: February 27, 2020
    Inventors: Hirofumi NISHIMURA, Tsuyoshi GOTO, Kentaro FURUSHO, Yuta ENOKIZONO, Wataru YAMAMOTO
  • Publication number: 20200001859
    Abstract: 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: Application
    Filed: February 23, 2018
    Publication date: January 2, 2020
    Inventors: Yuta Enokizono, Hirofumi Nishimura, Tsuyoshi Goto, Kentaro Furusho, Wataru Yamamoto
  • Publication number: 20190367006
    Abstract: 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: Application
    Filed: February 23, 2018
    Publication date: December 5, 2019
    Inventors: Kentaro Furusho, Hirofumi Nishimura, Tsuyoshi Goto, Yuta Enokizono, Wataru Yamamoto
  • Publication number: 20190352793
    Abstract: 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: Application
    Filed: December 28, 2016
    Publication date: November 21, 2019
    Inventors: Wataru YAMAMOTO, Kimiko KOIWA, Katsunori AKIYAMA, Masazumi ISHIGURO, Yoshiaki HOSHINO
  • Publication number: 20190336919
    Abstract: 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: Application
    Filed: July 15, 2019
    Publication date: November 7, 2019
    Inventors: Takashi Kondo, Masaru Banju, Seiichi Matsumoto, Seiji Kamba, Wataru Yamamoto, Yoshiji Okamoto
  • Patent number: 10399042
    Abstract: 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: Grant
    Filed: March 31, 2017
    Date of Patent: September 3, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Takashi Kondo, Masaru Banju, Seiichi Matsumoto, Seiji Kamba, Wataru Yamamoto, Yoshiji Okamoto
  • Publication number: 20190060839
    Abstract: 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.
    Type: Application
    Filed: October 31, 2018
    Publication date: February 28, 2019
    Inventors: Masaru Banju, Wataru Yamamoto, Junko Watanabe, Takashi Kondo
  • Patent number: 10183083
    Abstract: A metal mesh has a plurality of through-holes. A photosensitive organic material is attached to at least part of the metal mesh. The metal mesh is sterilized and/or cleaned. A determination of whether or not the sterilization and/or cleaning has been successful is made by analyzing the photosensitive organic material attached to the metal mesh.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: January 22, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Takashi Kondo, Wataru Yamamoto