Patents by Inventor Takafumi Higuchi

Takafumi Higuchi 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: 12004430
    Abstract: Provided is a piezoelectric valve in which the valve is opened/closed utilizing a displacement of a laminated piezoelectric element, including: a valve main body having a gas pressure chamber that receives compressed gas supplied externally; and an actuator having a valving element, the laminated piezoelectric element that generates a driving force required for operating the valving element as the displacement, and a displacement enlarging mechanism that enlarges the displacement of the laminated piezoelectric element to be acted on the valving element, the actuator being disposed in the valve main body, in which a surface of the laminated piezoelectric element is coated with silicone in a state in which the laminated piezoelectric element is integrated into the actuator.
    Type: Grant
    Filed: January 22, 2020
    Date of Patent: June 4, 2024
    Assignees: SATAKE CORPORATION, MECHANO TRANSFORMER CORPORATION
    Inventors: Takafumi Ito, Tadashi Matsushita, Toshiro Higuchi, Sze Keat Chee, Yoshinobu Mizuno
  • Patent number: 11982368
    Abstract: Provided is a piezoelectric actuator that can reduce a risk of air leakage due to weakening of pressing force of a valve element against a valve seat surface and airtightness. The piezoelectric actuator is used for a piezoelectric valve that opens and closes a valve utilizing displacement of a laminated piezoelectric element. The piezoelectric actuator includes: a valve element; a laminated piezoelectric element that generates a driving force, required for operation of the valve element, as a displacement; and a displacement enlargement mechanism that enlarges a displacement of a laminated piezoelectric element and causes the enlarged displacement to act on the valve element. In the piezoelectric actuator, a surface of the valve element to be in contact with a valve seat of the piezoelectric valve is made flat and smooth in a state in which a tensile load is applied to the laminated piezoelectric element.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: May 14, 2024
    Assignees: SATAKE CORPORATION, MECHANO TRANSFORMER CORPORATION
    Inventors: Takafumi Ito, Tadashi Matsushita, Toshiro Higuchi, Sze Keat Chee, Kunio Ebihara, Toshitada Hirata
  • Patent number: 11981796
    Abstract: A cellulose acetate resin composition may include a cellulose acetate (A) having a total degree of acetyl substitution of 2.60 or less; a filler (B); and a plasticizer (C). The filler (B) may be selected from the group consisting of (b1) a predetermined inorganic compound, (b2) a predetermined metal salt, (b3) cellulose or hemicellulose, and (b4) wood flour. The plasticizer (C) may be selected from (c1) a glycerin ester-based plasticizer, (c2) an ether-based plasticizer, and (c3) a glycol ester-based plasticizer. A content of the component (A) may be from 4.5 to 90 mass %. A total content of the component (B) may be from 5 to 50 mass %. A total content of the component (C) may be from 5 to 35 mass %.
    Type: Grant
    Filed: November 1, 2022
    Date of Patent: May 14, 2024
    Assignee: DAICEL CORPORATION
    Inventors: Masaaki Kusumoto, Takafumi Kawasaki, Akihiro Higuchi
  • Publication number: 20240106195
    Abstract: A light-emitting component includes: a substrate; multiple light-emitting elements provided on the substrate, each having a light-emitting area; and multiple thyristors which are provided on each of the light-emitting elements, which include gate layers, and which cause light to be emitted, or increase an amount of light emitted, from the light-emitting areas of the light-emitting elements by being in an ON state. The substrate absorbs light emitted from the thyristors and emits light not absorbed by the gate layers.
    Type: Application
    Filed: April 18, 2023
    Publication date: March 28, 2024
    Applicants: FUJIFILM Business Innovation Corp., FUJIFILM CORPORATION
    Inventors: Saori NISHIZAKI, Takashi KONDO, Takafumi HIGUCHI
  • Publication number: 20240106193
    Abstract: A light emitting component includes: a substrate; a plural light emitting elements that are provided on the substrate and respectively have light emission regions; and a plural thyristors that are turned on to cause the light emission regions of the respective light emitting elements to emit light, or that increase amounts of emitted light of the light emission regions, in which the light emitting elements absorb light emitted from a corresponding thyristor among the plural thyristors.
    Type: Application
    Filed: April 18, 2023
    Publication date: March 28, 2024
    Applicants: FUJIFILM Business Innovation Corp., FUJIFILM Corporation
    Inventors: Saori NISHIZAKI, Takashi KONDO, Takafumi HIGUCHI, Junichiro HAYAKAWA, Daisuke IGUCHI, Tomoaki SAKITA, Kei TAKEYAMA
  • Publication number: 20240105882
    Abstract: A semiconductor-laminated substrate includes: a substrate; and a laminated structure that includes a first semiconductor laminate which is provided on the substrate and processed into a light emitting element and a second semiconductor laminate which is provided on the first semiconductor laminate and processed into at least one thyristor, in which the laminated structure is adjusted such that two resonant wavelengths due to an effect of the thyristor are located on both sides of a resonant wavelength of the light emitting element.
    Type: Application
    Filed: May 28, 2023
    Publication date: March 28, 2024
    Applicants: FUJIFILM Business Innovation Corp., FUJIFILM Corporation
    Inventors: Takashi KONDO, Michiaki MURATA, Saori NISHIZAKI, Takafumi HIGUCHI
  • Patent number: 11921245
    Abstract: A photon counting device includes a plurality of pixels each including a photoelectric conversion element configured to convert input light to charge, and an amplifier configured to amplify the charge converted by the photoelectric conversion element and convert the charge to a voltage, an A/D converter configured to convert the voltages output from the amplifiers of the plurality of pixels to digital values; and a conversion unit configured to convert the digital value output from the A/D converter to the number of photons by referring to reference data, for each of the plurality of pixels, and the reference data is created based on a gain and an offset value for each of the plurality of pixels.
    Type: Grant
    Filed: April 12, 2023
    Date of Patent: March 5, 2024
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Tadashi Maruno, Eiji Toda, Mao Nakajima, Teruo Takahashi, Takafumi Higuchi
  • Patent number: 11835667
    Abstract: A photon counting device includes a plurality of pixels each including a photoelectric conversion element configured to convert input light to charge, and an amplifier configured to amplify the charge converted by the photoelectric conversion element and convert the charge to a voltage, an A/D converter configured to convert the voltage output from the amplifier of each of the plurality of pixels to a digital value and output the digital value, a correction unit configured to correct the digital value output from the A/D converter so that an influence of a variation in a gain and an offset value among the plurality of pixels is curbed, a calculation unit configured to output a summed value obtained by summing the corrected digital values corresponding to at least two pixels, and a conversion unit configured to convert the summed value output from the calculation unit to a number of photons.
    Type: Grant
    Filed: October 14, 2021
    Date of Patent: December 5, 2023
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Tadashi Maruno, Eiji Toda, Mao Nakajima, Teruo Takahashi, Takafumi Higuchi
  • Publication number: 20230378370
    Abstract: A light-emitting component includes a substrate and a light-emitting element provided on the substrate and configured to emit light in a direction intersecting a surface of the substrate. The light-emitting element includes a thyristor having an opening through which light is emitted, and an inner surface of the opening is covered with a light shield that suppresses transmission of light.
    Type: Application
    Filed: July 31, 2023
    Publication date: November 23, 2023
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Takashi KONDO, Michiaki MURATA, Junichiro HAYAKAWA, Takafumi HIGUCHI
  • Patent number: 11799269
    Abstract: A light emitting element formed of a laminate having a current constriction layer includes: a semiconductor substrate; a light emitting portion having plural first recess portions having a depth reaching the current constriction layer, and a current constriction structure formed in the current constriction layer and having an oxidized region where the current constriction layer is oxidized and a non-oxidized region surrounded by the oxidized region; an electrode pad disposed between the light emitting portion and an outer edge portion of the semiconductor substrate; and a step portion disposed between the electrode pad and the light emitting portion and formed from an upper surface of the laminate to the current constriction layer, and the current constriction layer in a region surrounded by the step portion is the oxidized region except for the non-oxidized region.
    Type: Grant
    Filed: January 12, 2021
    Date of Patent: October 24, 2023
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Takeshi Minamiru, Takashi Kondo, Takafumi Higuchi
  • Patent number: 11796692
    Abstract: A photon counting device includes a plurality of pixels each including a photoelectric conversion element configured to convert input light to charge, and an amplifier configured to amplify the charge converted by the photoelectric conversion element and convert the charge to a voltage, an A/D converter configured to convert the voltage output from the amplifier of each of the plurality of pixels to a digital value and output the digital value, a correction unit configured to correct the digital value output from the A/D converter so that an influence of a variation in a gain and an offset value among the plurality of pixels is curbed, a calculation unit configured to output a summed value obtained by summing the corrected digital values corresponding to at least two pixels, and a conversion unit configured to convert the summed value output from the calculation unit to a number of photons.
    Type: Grant
    Filed: October 14, 2021
    Date of Patent: October 24, 2023
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Tadashi Maruno, Eiji Toda, Mao Nakajima, Teruo Takahashi, Takafumi Higuchi
  • Publication number: 20230324570
    Abstract: A photon counting device includes a plurality of pixels each including a photoelectric conversion element configured to convert input light to charge, and an amplifier configured to amplify the charge converted by the photoelectric conversion element and convert the charge to a voltage, an A/D converter configured to convert the voltage output from the amplifier of each of the plurality of pixels to a digital value and output the digital value, a correction unit configured to correct the digital value output from the A/D converter so that an influence of a variation in a gain and an offset value among the plurality of pixels is curbed, a calculation unit configured to output a summed value obtained by summing the corrected digital values corresponding to at least two pixels, and a conversion unit configured to convert the summed value output from the calculation unit to a number of photons.
    Type: Application
    Filed: June 7, 2023
    Publication date: October 12, 2023
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Tadashi MARUNO, Eiji TODA, Mao NAKAJIMA, Teruo TAKAHASHI, Takafumi HIGUCHi
  • Publication number: 20230307893
    Abstract: A light emitting element includes: a light emitting unit that has multiple semiconductor layers laminated, the light emitting unit having a length from a center of the light emitting unit to an end portion in a first direction shorter than a length from the center to an end portion in a second direction intersecting the first direction, in plan view; and a connection part that extends from the light emitting unit in the first direction and connects the light emitting unit to another semiconductor layer.
    Type: Application
    Filed: September 6, 2022
    Publication date: September 28, 2023
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Takashi KONDO, Junichiro HAYAKAWA, Tomoaki SAKITA, Takafumi HIGUCHI, Kei TAKEYAMA
  • Publication number: 20230307885
    Abstract: A light emitting element includes: a substrate; a light emitting unit that is laminated on the substrate; and a thyristor that is laminated on the light emitting unit and performs setting so as to cause the light emitting unit to emit light or increase an amount of emitted light by being turned into an ON state, the thyristor having a low resistance layer with a resistance which does not electrically separate the thyristor at a position where a current flows from an electrode being in contact with the thyristor.
    Type: Application
    Filed: September 23, 2022
    Publication date: September 28, 2023
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Takashi KONDO, Michiaki MURATA, Takafumi HIGUCHI
  • Publication number: 20230252122
    Abstract: A light emitter includes: a substrate; a driving section provided on the substrate; a light source that is provided on the substrate and is driven by the driving section; a cover section through which light emitted from the light source is transmitted and that is disposed in an optical axial direction of the light source; and a support section that is provided on a part of the substrate excluding a part between the driving section and the light source and supports the cover section.
    Type: Application
    Filed: April 13, 2023
    Publication date: August 10, 2023
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Satoshi INADA, Kenichi ONO, Takeshi MINAMIRU, Michiaki MURATA, Takafumi HIGUCHI
  • Publication number: 20230251392
    Abstract: A photon counting device includes a plurality of pixels each including a photoelectric conversion element configured to convert input light to charge, and an amplifier configured to amplify the charge converted by the photoelectric conversion element and convert the charge to a voltage, an A/D converter configured to convert the voltages output from the amplifiers of the plurality of pixels to digital values; and a conversion unit configured to convert the digital value output from the A/D converter to the number of photons by referring to reference data, for each of the plurality of pixels, and the reference data is created based on a gain and an offset value for each of the plurality of pixels.
    Type: Application
    Filed: April 12, 2023
    Publication date: August 10, 2023
    Applicant: Hamamatsu Photonics K.K.
    Inventors: Tadashi MARUNO, Eiji TODA, Mao NAKAJIMA, Teruo TAKAHASHI, Takafumi HIGUCHI
  • Patent number: 11709284
    Abstract: A photon counting device includes a plurality of pixels each including a photoelectric conversion element configured to convert input light to charge, and an amplifier configured to amplify the charge converted by the photoelectric conversion element and convert the charge to a voltage, an A/D converter configured to convert the voltage output from the amplifier of each of the plurality of pixels to a digital value and output the digital value, a correction unit configured to correct the digital value output from the A/D converter so that an influence of a variation in a gain and an offset value among the plurality of pixels is curbed, a calculation unit configured to output a summed value obtained by summing the corrected digital values corresponding to at least two pixels, and a conversion unit configured to convert the summed value output from the calculation unit to a number of photons.
    Type: Grant
    Filed: October 14, 2021
    Date of Patent: July 25, 2023
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Tadashi Maruno, Eiji Toda, Mao Nakajima, Teruo Takahashi, Takafumi Higuchi
  • Publication number: 20230204772
    Abstract: A detection apparatus includes a light emitting unit including a first light emitting region that has at least one light emitting element and radiates light to a first radiation region and a second light emitting region that has at least one light emitting element and radiates light to a second radiation region, a drive unit that drives the light emitting unit, and a detection unit that detects an object based on a time until light radiated from the light emitting unit is reflected by the object and is received, in which the first radiation region is positioned outside with respect to the second radiation region, and an amount of light radiated from the first light emitting region is greater than an amount of light radiated from the second light emitting region.
    Type: Application
    Filed: April 19, 2022
    Publication date: June 29, 2023
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Takafumi HIGUCHI, Takashi KONDO, Daisuke IGUCHI
  • Patent number: 11656374
    Abstract: A photon counting device includes a plurality of pixels each including a photoelectric conversion element configured to convert input light to charge, and an amplifier configured to amplify the charge converted by the photoelectric conversion element and convert the charge to a voltage, an A/D converter configured to convert the voltages output from the amplifiers of the plurality of pixels to digital values; and a conversion unit configured to convert the digital value output from the A/D converter to the number of photons by referring to reference data, for each of the plurality of pixels, and the reference data is created based on a gain and an offset value for each of the plurality of pixels.
    Type: Grant
    Filed: October 15, 2021
    Date of Patent: May 23, 2023
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Tadashi Maruno, Eiji Toda, Mao Nakajima, Teruo Takahashi, Takafumi Higuchi
  • Patent number: 11657130
    Abstract: A light emitter includes: a substrate; a driving section provided on the substrate; a light source that is provided on the substrate and is driven by the driving section; a cover section through which light emitted from the light source is transmitted and that is disposed in an optical axial direction of the light source; and a support section that is provided on a part of the substrate excluding a part between the driving section and the light source and supports the cover section.
    Type: Grant
    Filed: July 15, 2019
    Date of Patent: May 23, 2023
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Satoshi Inada, Kenichi Ono, Takeshi Minamiru, Michiaki Murata, Takafumi Higuchi