Patents by Inventor Hiroki Ishihara

Hiroki Ishihara 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).

  • Patent number: 11360414
    Abstract: A sheet correcting device includes a plurality of curved surface members including curved surfaces, respectively, to deform a sheet along the curved surfaces, the plurality of curved surface members disposed along a conveyance direction of the sheet, a plurality of pressing members disposed facing the curved surfaces of the plurality of curved surface members, respectively, to press the sheet against the curved surfaces of the plurality of curved surface members, respectively, a sheet tensioner to apply tension to the sheet, and a heater to heat the sheet that is bent by the curved surfaces of the plurality of curved surface members.
    Type: Grant
    Filed: November 6, 2018
    Date of Patent: June 14, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventors: Hiroki Ishihara, Genichiroh Kawamichi, Satoshi Aizawa, Kohki Asada
  • Patent number: 11355694
    Abstract: According to one embodiment, a magnetic memory device includes a stacked structure including a first magnetic layer having a variable magnetization direction, a second magnetic layer having a fixed magnetization direction, and a nonmagnetic layer provided between the first magnetic layer and the second magnetic layer, and containing magnesium (Mg) and oxygen (O). The nonmagnetic layer further contains an additive element selected from fluorine (F), sulfur (S), hydrogen (H) and lithium (Li).
    Type: Grant
    Filed: September 13, 2019
    Date of Patent: June 7, 2022
    Assignee: KIOXIA CORPORATION
    Inventors: Tadaomi Daibou, Yasushi Nakasaki, Tadashi Kai, Hiroki Kawai, Takamitsu Ishihara, Junichi Ito
  • Patent number: 11309807
    Abstract: A power conversion device includes: a power converter circuit which converts a direct-current power, output from a decentralized power supply, into an alternating-current power, and outputs the alternating-current power to a power distribution grid; a voltage target value generation unit which removes a high-frequency variation from a root mean square of a voltage detected by a voltage detection unit to generate a voltage target value; a correction unit which corrects the voltage target value when the correction unit detects that the automatic voltage regulator has performed an action; and a command unit which, if the voltage at the point of interconnection detected by the voltage detection unit deviates from a voltage control deadband referenced to the voltage target value, commands the power converter circuit to output a reactive power based on a magnitude of the deviated amount of voltage.
    Type: Grant
    Filed: January 11, 2019
    Date of Patent: April 19, 2022
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Miwako Tanaka, Hiroki Ishihara
  • Publication number: 20220073295
    Abstract: An attachment mechanism includes a first holding member and a second holding member. The first holding member is configured to hold a device side plate of a belt device to attach a main body side plate of an apparatus in which the belt device is incorporated. The second holding member is configured to be fixed to the first holding member. The first holding member and the second folding member are configured to adjust a posture of the device side plate with respect to the main body side plate in assembly of the belt device.
    Type: Application
    Filed: August 26, 2021
    Publication date: March 10, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Hiroki ISHIHARA, Takehiro NAKAMURA, Kenji NOZAWA
  • Publication number: 20220014116
    Abstract: A power conversion device includes: a power converter circuit which converts a direct-current power, output from a decentralized power supply, into an alternating-current power, and outputs the alternating-current power to a power distribution grid; a voltage target value generation unit which removes a high-frequency variation from a root mean square of a voltage detected by a voltage detection unit to generate a voltage target value; a correction unit which corrects the voltage target value when the correction unit detects that the automatic voltage regulator has performed an action; and a command unit which, if the voltage at the point of interconnection detected by the voltage detection unit deviates from a voltage control deadband referenced to the voltage target value, commands the power converter circuit to output a reactive power based on a magnitude of the deviated amount of voltage.
    Type: Application
    Filed: January 11, 2019
    Publication date: January 13, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Miwako TANAKA, Hiroki ISHIHARA
  • Publication number: 20210391721
    Abstract: A management apparatus periodically transmits information for setting a first voltage range and a second voltage range smaller than the first voltage range to a distribution power supply apparatus. The distribution power supply apparatus removes, from an interconnection point voltage at an interconnection point with the distribution system, a voltage fluctuation component with a cycle shorter than a cycle in which the information is transmitted from the management apparatus to thereby generate a voltage command value of the interconnection point, and performs reactive power control for eliminating a voltage deviation of the interconnection point voltage with respect to the voltage command value. In the reactive power control, the generation of the reactive power is started when an absolute value of the voltage deviation exceeds the first voltage range, and the reactive power is adjusted until the absolute value falls below the second voltage range.
    Type: Application
    Filed: December 10, 2018
    Publication date: December 16, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Hiroki ISHIHARA, Miwako TANAKA
  • Patent number: 11146080
    Abstract: The positive electrode of the unit in an m-th configuration stage (m is an integer satisfying 2?m?n) is connected to a negative electrode of the unit in an (m?1)-th configuration stage. A drain-side terminal of the step-up switch included in the m-th configuration stage is connected to a source-side terminal of the step-up switch included in the (m?1)-th configuration stage. A source-side terminal of the step-up switch included in an n-th configuration stage is connected to a negative electrode of the unit included in the n-th configuration stage. The n step-up switches connected in series are connected in parallel to a series circuit including the power storage mechanism and the reactor.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: October 12, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Hiroki Ishihara, Toshihiro Wada
  • Publication number: 20210285057
    Abstract: An indicator may have improved accuracy for predicting an effect of a medicinal therapy on breast cancer. The method may estimate a breast cancer cell existence ratio and other methods, the method including: (1) analyzing methylation level of (1a) a cytosine residue in a CG portion of nucleotides at positions 1,000 to 1,001 in a nucleotide sequence of SEQ ID NO: 1, (1b) a cytosine residue in a CG portion of nucleotides at positions 1,000 to 1,001 in a nucleotide sequence of SEQ ID NO: 2, (1c) a cytosine residue in a CG portion of nucleotides at positions 1,001 to 1,002 in a nucleotide sequence of SEQ ID NO: 3, or (1d) a combination of the cytosine residues, in a sample derived from a human subject; and (2) estimating the breast cancer cell existence ratio in the sample, based on the methylation level analyzed at (1).
    Type: Application
    Filed: September 11, 2019
    Publication date: September 16, 2021
    Applicants: NATIONAL CANCER CENTER, H.U. Group Research Institute G.K.
    Inventors: Hiroki ISHIHARA, Toshikazu USHIJIMA
  • Patent number: 10974682
    Abstract: An airbag device has an airbag that is wound in a rolled state, mounted in a vehicle longitudinal direction of a vehicle and deployable in a curtain-like manner in a vehicle compartment by a gas generated by an inflator in case of emergency. A cover cloth is provided so as to be wound to cover at least part of an outer circumference of the airbag extending in a longitudinal direction. The cover cloth has a first folded-back part that is formed by folding back one end of the cover cloth in a circumferential direction of the outer circumference of a cross section, which is perpendicular to the longitudinal direction of the folded airbag. An edge of the outer circumference of the airbag is held between the first folded-back part and the other end of the cover cloth.
    Type: Grant
    Filed: November 25, 2016
    Date of Patent: April 13, 2021
    Assignee: AUTOLIV DEVELOPMENT AB
    Inventors: Tetsuya Iwata, Hiroki Ishihara, Akihiro Kawada
  • Patent number: 10800188
    Abstract: A sheet correcting device includes a belt pair to sandwich a sheet with an upper belt and a lower belt to convey the sheet in a sheet conveyance direction, a plurality of curved surface members disposed along the sheet conveyance direction, each of the plurality of curved surface members comprising a curved surface to contact the belt pair where the belt pair sandwiches the sheet, a plurality of pressing members facing the curved surface of each of the plurality of curved surface members, respectively, to press the belt pair against the curved surface of each of the plurality of curved surface members, and a heater to heat the sheet via at least one of the upper belt and the lower belt of the belt pair.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: October 13, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Kohki Asada, Genichiroh Kawamichi, Hiroki Ishihara, Satoshi Aizawa
  • Publication number: 20200290383
    Abstract: A cooling device includes a cooling member to absorb heat from a conveyed sheet and a plurality of cooling units to cool the cooling member. Each of the cooling units includes a coolant channel through which a coolant flows and a liquid-cooling device configured to cool the coolant that flows in the coolant channel. The coolant channels are disposed on or inside the cooling member and arranged side by side in a sheet conveyance direction. The coolant channels includes a downstream coolant channel being downstream from at least one of the plurality of coolant channels in the sheet conveyance direction, and an upstream coolant channel being upstream from the downstream coolant channel in the sheet conveyance direction. One of the liquid-cooling devices coupled to the downstream coolant channel has a cooling capacity higher than a cooling capacity of another of the liquid-cooling devices coupled to the upstream coolant channel.
    Type: Application
    Filed: January 31, 2020
    Publication date: September 17, 2020
    Inventors: Hiroki ISHIHARA, Kohki ASADA, Kenji NOZAWA, Satoshi AIZAWA
  • Publication number: 20200269799
    Abstract: An airbag device has an airbag that is wound in a rolled state, mounted in a vehicle longitudinal direction of a vehicle and deployable in a curtain-like manner in a vehicle compartment by a gas generated by an inflator in case of emergency. A cover cloth is provided so as to be wound to cover at least part of an outer circumference of the airbag extending in a longitudinal direction. The cover cloth has a first folded-back part that is formed by folding back one end of the cover cloth in a circumferential direction of the outer circumference of a cross section, which is perpendicular to the longitudinal direction of the folded airbag. An edge of the outer circumference of the airbag is held between the first folded-back part and the other end of the cover cloth.
    Type: Application
    Filed: November 25, 2016
    Publication date: August 27, 2020
    Applicant: Autoliv Development AB
    Inventors: Tetsuya IWATA, Hiroki ISHIHARA, Akihiro KAWADA
  • Patent number: 10673354
    Abstract: A power conversion device includes: a first smoothing circuit connected to a first electric device; a second smoothing circuit connected to a second electric device; a first bridge circuit connected to the first smoothing circuit; a transformer having a primary side connected to a third electric device and a secondary side connected to the first bridge circuit and the second smoothing circuit; and a controller, wherein the controller varies a duty ratio of the first bridge circuit at a frequency higher than cutoff frequencies of the first and second smoothing circuits, controls a constant component of the duty ratio to control power exchange between the first and second electric devices, and controls a phase of a varying component of the duty ratio to control power exchange to and from the third electric device.
    Type: Grant
    Filed: May 19, 2017
    Date of Patent: June 2, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Toshihiro Wada, Hiroki Ishihara
  • Patent number: 10661712
    Abstract: The bird's-eye view image system is provided with a plurality of cameras for acquiring a surrounding image of the work vehicle, a display unit for displaying a bird's-eye view image based on the image acquired by the plurality of cameras, and a control unit for causing a bird's-eye view image to be generated and displayed by the display unit. The plurality of cameras have a first front camera provided in the traveling body for acquiring an image ahead of the travelling body, a first rear camera provided in the traveling body for acquiring an image backward of the traveling body, a right camera provided on the swivel base for acquiring an image rightward of the swivel base, and a left camera provided on the swivel base for acquiring an image leftward of the swivel base.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: May 26, 2020
    Assignee: TADANO LTD.
    Inventors: Hiroki Ishihara, Keiji Sato, Hideyuki Higashi
  • Publication number: 20200132774
    Abstract: In a storage battery system charging control device, on the basis of estimated temperature data until the end of life of a storage battery calculated by a power estimation unit, an ambient temperature estimation unit, and a temperature estimation unit, and a deterioration coefficient stored in a data storage unit, a capacity retention calculation unit sequentially calculates capacity retention data with respect to each state of charge until the end of life of the storage battery, using the state of charge as a parameter. A cumulative capacity calculation unit calculates a cumulative capacity corresponding to each state of charge, on the basis of the rated capacity of the storage battery and the capacity retention data. A charging control voltage determination unit determines charging control voltage on the basis of the cumulative capacities calculated by the cumulative capacity calculation unit.
    Type: Application
    Filed: March 5, 2018
    Publication date: April 30, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Satoshi HARA, Hisatoshi FUKUMOTO, Toshihiro WADA, Takahito IDA, Hiroki ISHIHARA
  • Publication number: 20200091736
    Abstract: The positive electrode of the unit in an m-th configuration stage (m is an integer satisfying 2?m?n) is connected to a negative electrode of the unit in an (m?1)-th configuration stage. A drain-side terminal of the step-up switch included in the m-th configuration stage is connected to a source-side terminal of the step-up switch included in the (m?1)-th configuration stage. A source-side terminal of the step-up switch included in an n-th configuration stage is connected to a negative electrode of the unit included in the n-th configuration stage. The n step-up switches connected in series are connected in parallel to a series circuit including the power storage mechanism and the reactor.
    Type: Application
    Filed: February 5, 2018
    Publication date: March 19, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Hiroki ISHIHARA, Toshihiro WADA
  • Publication number: 20200091838
    Abstract: A power conversion device includes: a first smoothing circuit connected to a first electric device; a second smoothing circuit connected to a second electric device; a first bridge circuit connected to the first smoothing circuit; a transformer having a primary side connected to a third electric device and a secondary side connected to the first bridge circuit and the second smoothing circuit; and a controller, wherein the controller varies a duty ratio of the first bridge circuit at a frequency higher than cutoff frequencies of the first and second smoothing circuits, controls a constant component of the duty ratio to control power exchange between the first and second electric devices, and controls a phase of a varying component of the duty ratio to control power exchange to and from the third electric device.
    Type: Application
    Filed: May 19, 2017
    Publication date: March 19, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Toshihiro WADA, Hiroki ISHIHARA
  • Patent number: 10422820
    Abstract: A voltage sensor includes a vibrator configured to be supported by a mechanical supporting portion and to be given a floating potential, a drive electrode configured to be disposed adjacent to the vibrator and to resonate the vibrator with applied AC voltage, a driver configured to apply an AC voltage that crosses 0 V to the drive electrode, a fixed electrode configured to be disposed adjacent to the vibrator with a gap formed between the fixed electrode and the vibrator, and a calculator configured to detect a magnitude of a measurement target voltage based on a change of a resonant frequency of the vibrator when the measurement target voltage is applied to the fixed electrode.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: September 24, 2019
    Assignees: YAZAKI CORPORATION, TOYOTA SCHOOL FOUNDATION
    Inventors: Hiroki Ishihara, Makoto Ishii, Minoru Sasaki
  • Patent number: 10401394
    Abstract: A voltage sensor includes an oscillator that has a circular or roughly circular shape and is supported by a mechanical support member, a fixed electrode that has a predetermined gap between the oscillator and the fixed electrode, and a drive electrode that is placed at a position different from the fixed electrode across the oscillator, and to which an AC drive voltage is applied to make the oscillator oscillate. In the voltage sensor, an electrostatic attractive force acts on the oscillator by applying a voltage to the fixed electrode, and a resonance frequency of the oscillator changes.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: September 3, 2019
    Assignees: YAZAKI CORPORATION, TOYOTA SCHOOL FOUNDATION
    Inventors: Hiroki Ishihara, Makoto Ishii, Minoru Sasaki
  • Publication number: 20190248289
    Abstract: The bird's-eye view image system is provided with a plurality of cameras for acquiring a surrounding image of the work vehicle, a display unit for displaying a bird's-eye view image based on the image acquired by the plurality of cameras, and a control unit for causing a bird's-eye view image to be generated and displayed by the display unit. The plurality of cameras have a first front camera provided in the traveling body for acquiring an image ahead of the travelling body, a first rear camera provided in the traveling body for acquiring an image backward of the traveling body, a right camera provided on the swivel base for acquiring an image rightward of the swivel base, and a left camera provided on the swivel base for acquiring an image leftward of the swivel base.
    Type: Application
    Filed: September 8, 2017
    Publication date: August 15, 2019
    Applicant: TADANO LTD.
    Inventors: Hiroki ISHIHARA, Keiji SATO, Hideyuki HIGASHI