Patents by Inventor Takashi Sakurai

Takashi Sakurai 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: 12266719
    Abstract: Provided is a semiconductor device comprising: a semiconductor substrate provided with a drift region; a buffer region arranged between the drift region and the lower surface, wherein a doping concentration distribution has three or more concentration peaks; and a collector region arranged between the buffer region and the lower surface, wherein the three or more concentration peaks in the buffer region include: a first concentration peak closest to the lower surface; a second concentration peak closest, next to the first concentration peak, to the lower surface, arranged 5 ?m or more distant from the lower surface in the depth direction, and having a doping concentration lower than the first concentration peak, the doping concentration being less than 1.0×1015/cm3; and a high concentration peak arranged farther from the lower surface than the second concentration peak, and having a higher doping concentration than the second concentration peak.
    Type: Grant
    Filed: February 23, 2022
    Date of Patent: April 1, 2025
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Yoshiharu Kato, Yosuke Sakurai, Seiji Noguchi, Takashi Yoshimura
  • Publication number: 20250104838
    Abstract: In an activity support device, a plan acquisition means acquires a target physical activity amount of a user in a predetermined period and a predictive physical activity amount representing an expected expenditure of a physical activity amount. An expended physical activity amount acquisition means acquires an expended physical activity amount of the user up to a current time in the predetermined period. A total expended physical activity amount acquisition means derives a total expended physical activity amount of the user in the predetermined period, based on the predictive physical activity amount and the expended physical amount. An activity determination means determines a physical activity to the user from among physical activity options by comparing the target physical amount and the total expended physical amount. Accordingly, it is possible for the activity support device to support a user in making a decision regarding the physical activity.
    Type: Application
    Filed: September 26, 2024
    Publication date: March 27, 2025
    Applicant: NEC Corporation
    Inventors: Tatsunori NAGASAWA, Masaru Yanai, Seishi Handa, Tomonori Ishida, Makoto Iwasaki, Noriaki Kobayashi, Takashi Kojima, Naoko Kurisaki, Hideki Muramatsu, Motoharu Ohtake, Nanami Sakurai, Yasuyuki Taguchi, Takayuki Takimoto, Noritsugu Yamanaka, Kosei Kobayashi
  • Publication number: 20250095937
    Abstract: An electromagnetic contactor includes: a box-shaped arc extinguishing wall which is arranged in a housing and in which a pair of fixed contacts and a movable contact are arranged; first and second arc extinguishing spaces provided on one side and the other side of the movable contact in its longitudinal direction, the first and second arc extinguishing spaces being spaces surrounded by the arc extinguishing wall; a pair of arc extinguishing permanent magnets arranged to face each other and configured to extend a first arc generated between the first fixed contact point and the first movable contact point in the first arc extinguishing space and to extend a second arc generated between the second fixed contact point and the second movable contact point in the second arc extinguishing space; a first opening provided in a wall portion of the arc extinguishing wall which wall portion is on a side toward which the first arc is extended; and a second opening provided in a wall portion of the arc extinguishing wall
    Type: Application
    Filed: July 24, 2024
    Publication date: March 20, 2025
    Applicant: FUJI ELECTRIC CO., LTD.
    Inventors: Yuma KUSANO, Takashi TSUTSUMI, Yuya SAKURAI, Koujun KONISHI
  • Publication number: 20250052315
    Abstract: A power transmission device includes: a deceleration device; and a case including a gear chamber provided with an accommodation chamber that accommodates the deceleration device therein, in which the deceleration device includes an input shaft whose rotation axis direction extends in a horizontal direction, and a deceleration mechanism configured to reduce power input from the input shaft, and a wall portion of the case is provided with a first storage portion configured to store a lubricating liquid for lubricating the deceleration device, the first storage portion being arranged above a rotation axis of the input shaft and below an upper end of the deceleration mechanism in an upper-lower direction, and arranged at a position where at least a part thereof overlaps the deceleration mechanism in an axial direction of the input shaft.
    Type: Application
    Filed: August 7, 2024
    Publication date: February 13, 2025
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Takashi WAKUI, Motoshi TOGASAKI, Masahiro IMAI, Kazuki SAKURAI
  • Publication number: 20250052316
    Abstract: A power transmission device includes: a first rotation member; a first rotation shaft supporting the first rotation member; and a case rotatably supporting the first rotation shaft, in which the case includes a rotation member accommodation chamber accommodating the first rotation shaft and the first rotation member, a first storage portion provided at a bottom portion of the rotation member accommodation chamber and configured to store a lubricating liquid such that a portion of the first rotation member is immersed therein, and a second storage portion provided above the first rotation shaft in the rotation member accommodation chamber and configured to store the lubricating liquid.
    Type: Application
    Filed: August 7, 2024
    Publication date: February 13, 2025
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Takashi WAKUI, Motoshi TOGASAKI, Masahiro IMAI, Kazuki SAKURAI
  • Publication number: 20250052317
    Abstract: A power transmission device includes: a planetary gear mechanism; and a case accommodating the planetary gear mechanism, in which the planetary gear mechanism includes an input shaft, a sun gear, a plurality of planetary gears, a planetary carrier, and a ring gear, the sun gear is an external gear provided on the input shaft, a gear member is attached to one end of the input shaft, a baffle plate extending between the gear member and the sun gear is attached to the case, and at least a part of the gear member and the planetary gear mechanism is immersed in a lubricating liquid stored in a lower portion of the case.
    Type: Application
    Filed: August 7, 2024
    Publication date: February 13, 2025
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Takashi WAKUI, Mitoshi TOGASAKI, Masahiro IMAI, Kazuki SAKURAI
  • Publication number: 20250054718
    Abstract: An electromagnetic contactor comprises: fixed contact pieces 3 including fixed contacts 9; an electromagnet unit 5 to which a movable contact piece 4, the movable contact piece 4 including movable contacts 10, the movable contacts 10 coming into contact with and being separated from the fixed contacts, is joined via a contact support 11; and a hermetically sealed container 2 configured to contain the fixed contact pieces, the movable contact piece, and the electromagnet unit in the same space, wherein in the electromagnet unit 5, unit-side joining portions 25a and 25b, the unit-side joining portions 25a and 25b being joined to container-side joining portions 33 and 36 arranged on the hermetically sealed container from the direction of movement of the movable contact piece, respectively, are arranged, and flat plate-shaped spacers 34 and 37 by which an inter-contact gap G between the fixed contacts and the movable contacts is adjusted are arranged interposed between the container-side joining portion and the u
    Type: Application
    Filed: June 24, 2024
    Publication date: February 13, 2025
    Applicant: FUJI ELECTRIC CO., LTD.
    Inventors: Koujun KONISHI, Takashi TSUTSUMI, Yuya SAKURAI, Yuma KUSANO
  • Publication number: 20250050730
    Abstract: A drive unit includes a drive motor, a speed reducer which outputs power of the drive motor at a reduced speed, and a drive unit case which accommodates the drive motor and the speed reducer. An output rotary shaft of the drive motor and an output rotary shaft of the speed reducer are arranged in parallel and aligned in a horizontal direction. The drive unit case has a motor chamber in which the drive motor is accommodated, and a gear chamber provided with an accommodating chamber in which the speed reducer is accommodated. The motor chamber and the gear chamber are divided by a dividing wall. An upper space and a lower space separated in an upper-lower direction by an upper-lower dividing wall extending from the dividing wall are formed between the motor chamber and the accommodating chamber.
    Type: Application
    Filed: August 6, 2024
    Publication date: February 13, 2025
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Takashi Wakui, Motoshi Togasaki, Masahiro Imai, Kazuki Sakurai
  • Publication number: 20250034735
    Abstract: A hydrogen production system includes a hydrogen generation device to generate hydrogen, and a compressor to compress the hydrogen. The hydrogen generation device and the compressor are connected by a first line. The compressor and a hydrogen utilization equipment to utilize the hydrogen compressed by the compressor are connected by a second line. A hydrogen storage unit to store the hydrogen compressed by the compressor is connected to the first line by a first bypass line. The first bypass line has a first control valve to control a flow of the hydrogen in the first bypass line.
    Type: Application
    Filed: October 14, 2024
    Publication date: January 30, 2025
    Inventors: Toshihisa NAKAJIMA, Kota SHIBATA, Yasutoshi DOI, Shota CHATANI, Daichi SAKURAI, Shinji KAWADA, Hideaki OKAWA, Seiichiro WASHINO, Takashi KANEKO
  • Patent number: 12208629
    Abstract: A recording apparatus includes a conveyance unit, a carriage, a recording head, a frame, and a guide member. The conveyance unit conveys a sheet in a conveyance direction. The carriage moves in a scanning direction crossing the conveyance direction and has a first abutment portion and a second abutment portion higher in position than the first abutment portion. The recording head is mounted on the carriage, arranged to face a sheet conveyed by the conveyance unit, and ejects a liquid onto the conveyed sheet to record an image. The frame has a first sliding portion in abutment with the first abutment portion and has a second sliding portion in abutment with the second abutment portion. The guide member supports the carriage and is fixed to the frame at a position separated from the first sliding portion.
    Type: Grant
    Filed: October 10, 2022
    Date of Patent: January 28, 2025
    Assignee: Canon Kabushiki Kaisha
    Inventors: Taiji Maruyama, Atsushi Kohnotoh, Yasuyuki Takanaka, Norio Sakurai, Takashi Abe, Kousuke Tanaka, Yusuke Naratani, Shuhei Yamaguchi
  • Publication number: 20250028634
    Abstract: According to one embodiment, a memory system includes a nonvolatile semiconductor memory device, controller, memory, wireless communication function section, and extension register. The controller controls the nonvolatile semiconductor memory device. The memory is serving as a work area of the controller. The wireless communication module has a wireless communication function. The extension register is provided in the memory. The controller processes a first command to read data from the extension register, and a second command to write data to the extension register. The extension register records, an information specifying the type of the wireless communication function in a specific page, and an address information indicating a region on the extension register to which the wireless communication function is assigned.
    Type: Application
    Filed: October 2, 2024
    Publication date: January 23, 2025
    Applicant: KIOXIA CORPORATION
    Inventors: Takashi WAKUTSU, Shuichi SAKURAI, Kuniaki ITO, Yasufumi TSUMAGARI
  • Patent number: 12205730
    Abstract: A method for manufacturing a conductive wire includes conducting a continuous casting of a conductive alloy material at a casting rate of not less than 40 mm/min and not more than 200 mm/min to form a conductive wire with a primary diameter, the conductive alloy material containing not more than 1.0 mass % of an added metal element, reducing a diameter of the conductive wire with the primary diameter to form a conductive wire with a secondary diameter, heat treating the conductive wire with the secondary diameter so that tensile strength thereof is reduced to not less than 90% and less than 100% of tensile strength before the heat treating, and reducing a diameter of the conductive wire with the secondary diameter and the reduced tensile strength to generate a logarithmic strain of 7.8 to 12.0 therein to form a conductive wire with a tertiary diameter.
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: January 21, 2025
    Assignee: Proterial, Ltd.
    Inventors: Seigi Aoyama, Toru Sumi, Takashi Hayasaka, Ryohei Okada, Detian Huang, Tamotsu Sakurai, Satoshi Yajima, Minoru Takatsuto, Hiroshi Bando
  • Publication number: 20240424342
    Abstract: An electronic device includes at least one processor that identifies a cyclic change related to an arm swing of a user from a three-dimensional acceleration measured by a first measurer. The at least one processor defines a two-dimensional plane containing a plane of the arm swing of the user from the three-dimensional acceleration measured at a wrist of the user, detects the cyclic change as a motion on an arc centered at a shoulder of the user in the two-dimensional plane, and obtains an angle of the arm swing.
    Type: Application
    Filed: June 25, 2024
    Publication date: December 26, 2024
    Applicant: CASIO COMPUTER CO., LTD.
    Inventors: Keisuke SHIMADA, Hiroyasu IDE, Yoshitsugu MANABE, Yuto YAMANAKA, Takashi SAKURAI, Takehiro AIBARA, Takashi NIIMURA, Tomoharu YAMAGUCHI, Masaaki SASAKI
  • Publication number: 20240423500
    Abstract: An electronic device includes at least one processor that identifies a cyclic change related to an arm swing of a user from a three-dimensional acceleration measured by a measurer. The at least one processor defines a two-dimensional plane containing a plane of the arm swing of the user from the three-dimensional acceleration measured at a wrist of the user, detects the cyclic change as a motion on an arc centered at a shoulder of the user in the two-dimensional plane, obtains, from the three-dimensional acceleration, a direction of a line segment connecting the wrist and the shoulder, and obtains a bending angle of an elbow of the user based on the line segment.
    Type: Application
    Filed: June 25, 2024
    Publication date: December 26, 2024
    Applicant: CASIO COMPUTER CO., LTD.
    Inventors: Keisuke SHIMADA, Hiroyasu IDE, Yuto YAMANAKA, Takashi SAKURAI, Masaaki SASAKI, Takehiro AIBARA, Takashi NIIMURA, Tomoharu YAMAGUCHI, Yoshitsugu MANABE
  • Publication number: 20240199811
    Abstract: A polyamide-imide material comprises an amidophenyl-ethyl-imide moiety or alternatively an imidophenyl-ethyl-amide moiety as depicted in formulas (I) or (II) in the disclosure. The polyamide-imide material can have selected mechanical properties, such as a tensile modulus between at least 3.5 GPa and at least 7.8 GPa, a glass transition temperature between at least 180° C. and at least 305° C., an elongation at break of a film of the polyamide-imide material having a thickness of 25 micrometer (±5 micrometer) of not more than 15%, or a folding endurance of the film over a pin having a radius of 1 mm between at least 10,000 folds and at least 1,000,000 folds. The polyamide-imide film can have high transparency of visible light, a low yellow index, and a low haze.
    Type: Application
    Filed: February 28, 2022
    Publication date: June 20, 2024
    Inventors: Patrick HOMYAK, Max Benjamin LYONS, James Ryan PATTON, Arjan ZOOMBELT, Satoshi OKAMOTO, Kazuya MATSUI, Takashi SAKURAI, Takeru SHIMOYAMA
  • Publication number: 20230272165
    Abstract: The present invention relates to an optical film comprising a polyimide-based resin having a constitutional unit derived from an aliphatic diamine, wherein the optical film has a glass transition temperature of 165° C. or higher and an optical transmittance at 350 nm of 10% or less.
    Type: Application
    Filed: July 1, 2021
    Publication date: August 31, 2023
    Applicants: Sumitomo Chemical Company, Limited, Zymergen Inc.
    Inventors: Takashi Sakurai, Christiaan Schroeder, Matt Blom, Lennon Chu
  • Publication number: 20230250312
    Abstract: The present invention relates to a method for producing an optical film, the method comprising: step (I) for dissolving a polyimide-based resin in a solvent to prepare a varnish; step (II) for applying the varnish onto a substrate to form a coating film; and step (III) for drying the coating film to form a film, wherein the polyimide-based resin contains a constitutional unit derived from an aliphatic diamine, the solvent in step (I) has a moisture absorption speed per unit area of 25% by mass/h m2 or more as measured by a Karl Fischer method, and a time T from the completion of the formation of the coating film in step (II) to the start of the drying of the coating film in step (III) satisfies the following equation (A): T < 0.0018 Vs ( A ) wherein Vs represents a moisture absorption speed per minute (% by mass/min) of the solvent as determined by a Karl Fischer method.
    Type: Application
    Filed: July 1, 2021
    Publication date: August 10, 2023
    Applicants: Sumitomo Chemical Company, Limited, Zymergen Inc.
    Inventors: Takashi Sakurai, Arjan Zoombelt, Justin Kerszulis
  • Publication number: 20230242722
    Abstract: The present invention relates to a method for producing a long optical film, the method comprising a step for preparing a varnish by dissolving a polyimide-based resin in a solvent, wherein the polyimide-based resin contains a constitutional unit derived from an aliphatic diamine, and a moisture absorption speed per unit area of the solvent is 25% by mass/h·m2 or less as determined by a Karl Fischer method.
    Type: Application
    Filed: July 1, 2021
    Publication date: August 3, 2023
    Applicants: Sumitomo Chemical Company, Limited, Zymergen Inc.
    Inventors: Takashi Sakurai, Takeru Shimoyama, Arjan Zoombelt, Justin Kerszulis
  • Publication number: 20230242721
    Abstract: The present invention relates to an optical film having a glass transition temperature of 165° C. or higher, an optical transmittance at 350 nm of 10% or less, an in-plane retardation of 30 nm or less, and a retardation in a thickness direction of 100 nm or less.
    Type: Application
    Filed: July 1, 2021
    Publication date: August 3, 2023
    Applicants: Sumitomo Chemical Company, Limited, Zymergen Inc.
    Inventors: Takashi Sakurai, Christiaan Schroeder, Matt Blom, Lennon Chu
  • Patent number: 11573007
    Abstract: A burner device for supplying a mixture of a fuel gas and a combustion-supporting gas into a combustion region includes: a mixing path configured to inject the mixture from a downstream end portion of the mixing path into the combustion region; a fuel gas injection nozzle configured to inject the fuel gas into the mixing path toward the combustion region; and a combustion-supporting gas supply swirler configured to inject the combustion-supporting gas such that at least a part of the combustion-supporting gas collides directly with the fuel gas injected from the fuel gas injection nozzle, in a direction of a tangent line that is tangent to a fuel injection hole of the fuel gas injection nozzle on a cross-section.
    Type: Grant
    Filed: May 7, 2020
    Date of Patent: February 7, 2023
    Assignees: KAWASAKI JUKOGYO KABUSHIKI KAISHA, TOKYO METROPOLITAN PUBLIC UNIVERSITY CORPORATION
    Inventors: Takeo Oda, Toshiaki Sakurazawa, Ryosuke Oshima, Saburo Yuasa, Takashi Sakurai, Koichi Nozaki