Patents by Inventor Hiroshi Fujita

Hiroshi Fujita 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: 12286195
    Abstract: A bicycle rear sprocket comprises a sprocket body, a plurality of sprocket teeth, an opening, and a torque-transmitting structure. The plurality of sprocket teeth extends radially outwardly from the sprocket body with respect to a rotational center axis of the bicycle rear sprocket. The opening has a minimum diameter that is smaller than a minimum outer diameter of a sprocket support body of a bicycle rear hub assembly. The torque-transmitting structure includes at least ten torque-transmitting teeth configured to directly or indirectly transmit a pedaling torque to the sprocket support body of the bicycle rear hub assembly.
    Type: Grant
    Filed: November 8, 2023
    Date of Patent: April 29, 2025
    Assignee: SHIMANO INC.
    Inventor: Hiroshi Fujita
  • Patent number: 12286194
    Abstract: A sprocket support body comprises at least ten external spline teeth including a plurality of external-spline driving surfaces. The plurality of external-spline driving surfaces each includes a radially outermost edge, a radially innermost edge, and a radial length. A total of the radial lengths of the plurality of external-spline driving surfaces is equal to or larger than 7 mm. At least one external-spline driving surface has a first external-spline-surface angle. The first external-spline-surface angle ranges from 0 degree to 10 degrees. One tooth of the at least ten external spline teeth having a first circumferential spline size. The other teeth of the at least ten external spline teeth each have a second circumferential spline size that is smaller than the first circumferential spline size. A total number of the other teeth of the at least ten external spline teeth being equal to or larger than nine.
    Type: Grant
    Filed: July 13, 2021
    Date of Patent: April 29, 2025
    Assignee: SHIMANO INC.
    Inventors: Hiroshi Fujita, Kazuki Koshiyama, Takashi Nakanishi
  • Patent number: 12272234
    Abstract: A base station used in a traffic communication system includes a communicator configured to receive, via wireless communication, information transmitted from a vehicle traveling on a road, and a controller configured to identify, based on the information received by the communicator, a traveling behavior including a travel route of the vehicle on the road. The controller is configured to execute first processing for performing statistical learning or machine learning on a plurality of the traveling behaviors respectively identified for a plurality of the vehicles traveling on the road, and second processing for determining, based on a result of the first processing, whether a traffic obstacle is present on the road and a position of the traffic obstacle on the road.
    Type: Grant
    Filed: January 10, 2022
    Date of Patent: April 8, 2025
    Assignee: KYOCERA Corporation
    Inventors: Yuta Umehara, Tetsuo Okamoto, Hiroshi Sakai, Hiroki Fujita, Takatoshi Yoshikawa, Shinobu Fujimoto
  • Publication number: 20250091693
    Abstract: A rear sprocket includes a sprocket body and a plurality of sprocket teeth. The plurality of sprocket teeth includes a first upshifting facilitation tooth, a second upshifting facilitation tooth, a third upshifting facilitation tooth and an upshifting initiation tooth. The upshifting initiation tooth is adjacent to the third upshifting facilitation tooth at an upstream side of the third upshifting facilitation tooth with respect to a driving rotational direction of the rear sprocket without another tooth between the third upshifting facilitation tooth and the upshifting initiation tooth in a circumferential direction.
    Type: Application
    Filed: November 27, 2024
    Publication date: March 20, 2025
    Applicant: SHIMANO INC.
    Inventors: Hiroshi FUJITA, Yusuke ODA, Hiroaki UEMURA
  • Patent number: 12252216
    Abstract: A rear sprocket assembly comprises a sprocket carrier, a first sprocket, and a second sprocket. The sprocket carrier includes at least one sprocket mounting portion having a first radial section and a second radial section. The first radial section has a first maximum axial length with respect to the axial direction. The second radial section has a second maximum axial length with respect to the axial direction. The second maximum axial length is larger than the first maximum axial length. At least one second mounted portion of the second sprocket is configured to axially contact the first radial section and the second radial section of the at least one sprocket mounting portion of the sprocket carrier with respect to the axial direction.
    Type: Grant
    Filed: June 27, 2023
    Date of Patent: March 18, 2025
    Assignee: SHIMANO INC.
    Inventors: Hiroshi Fujita, Yusuke Oda
  • Patent number: 12243751
    Abstract: According to one embodiment, a chemical solution comprises a mixed acid including an inorganic acid, an oxidizing agent, a carboxylic acid, and water; and polyethyleneimine of a concentration in the chemical solution in a range of 0.05 wt % to 10 wt %.
    Type: Grant
    Filed: September 3, 2021
    Date of Patent: March 4, 2025
    Assignee: KIOXIA CORPORATION
    Inventors: Hakuba Kitagawa, Tatsuhiko Koide, Hiroshi Fujita
  • Patent number: 12212094
    Abstract: A connector includes: an electric wire; a terminal connected to the electric wire; a housing having a housing space to house a connection portion of the electric wire and the terminal; a seal member to seal an opening portion of the housing space to isolate the connection portion housed in the housing space from an outside; and a heat storage member located in the housing space.
    Type: Grant
    Filed: June 21, 2022
    Date of Patent: January 28, 2025
    Assignee: YAZAKI CORPORATION
    Inventors: Yasuhiro Yamaguchi, Hideki Mizuno, Hiroshi Fujita, Toshiharu Takahashi, Hiroyuki Tanaka, Kazuki Shirosaka, Takanori Kanamori
  • Publication number: 20250022628
    Abstract: Disclosed herein is a copper alloy wire being a wire rod formed of a copper alloy and having a tensile strength of 400 MPa or more, an elongation at break of 5% or more, a conductivity of 60% IACS or more, and a wire diameter of 0.5 mm or less, wherein the copper alloy has a composition containing 0.05% by mass or more and 1.6% by mass or less of iron, 0.01% by mass or more and 0.7% by mass or less of phosphorus, and 0.05% by mass or more and 0.7% by mass or less of tin with the balance being copper and unavoidable impurities, the copper alloy has a structure containing crystals, and a crystal grain size difference determined as a difference between a maximum crystal grain size and a minimum crystal grain size in a cross-section is 1.0 ?m or less.
    Type: Application
    Filed: June 7, 2022
    Publication date: January 16, 2025
    Applicants: Sumitomo Electric Industries, Ltd., AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd.
    Inventors: Kazuki EHARA, Yasuyuki OTSUKA, Fumitoshi IMASATO, Yusuke OSHIMA, Hiroki TSUNEDA, Noriaki KUBO, Hiroshi FUJITA, Sae SHIMIZU, Tetsuya KUWABARA, Kei SAKAMOTO
  • Patent number: 12187384
    Abstract: A rear sprocket comprises a sprocket body, a plurality of sprocket teeth, a plurality of spline teeth, a maximum spline distance, and a radial tooth-bottom distance. Each of the plurality of spline teeth has a spline crest. The maximum spline distance is defined from the rotational center axis to the spline crest. The radial tooth-bottom distance is defined from a rotational center axis to one of plurality of tooth bottom center points. The maximum spline distance is larger than the radial tooth-bottom distance. The spline crest of each of the plurality of spline teeth is positioned radially inwardly from the tooth outline of each of the plurality of sprocket teeth in the radial direction.
    Type: Grant
    Filed: September 22, 2022
    Date of Patent: January 7, 2025
    Assignee: SHIMANO INC.
    Inventors: Hiroshi Fujita, Yusuke Oda, Hiroaki Uemura
  • Publication number: 20250002115
    Abstract: A rear sprocket assembly comprises a sprocket carrier, a first sprocket, and a second sprocket. The sprocket carrier includes at least one sprocket mounting portion having a first radial section and a second radial section. The first radial section has a first maximum axial length with respect to the axial direction. The second radial section has a second maximum axial length with respect to the axial direction. The second maximum axial length is larger than the first maximum axial length. At least one second mounted portion of the second sprocket is configured to axially contact the first radial section and the second radial section of the at least one sprocket mounting portion of the sprocket carrier with respect to the axial direction.
    Type: Application
    Filed: June 27, 2023
    Publication date: January 2, 2025
    Applicant: SHIMANO INC.
    Inventors: Hiroshi FUJITA, Yusuke ODA
  • Patent number: 12179882
    Abstract: A lock device comprises a first lock member and a second lock member. The first lock member includes a first axial end, a second axial end, and a first surface. The first axial end is configured to be detachably attached to a sprocket support body of the rear hub assembly in a mounting state where the plurality of rear sprockets is mounted to the rear hub assembly. The second lock member includes a third axial end, a fourth axial end, and a second surface. The third axial end is configured to be attached to the second axial end of the first lock member in an assembled state where a smallest sprocket and the lock device are assembled as one unit. The lock device is configured so that the smallest sprocket is slidable relative to the lock device in the axial direction in the assembled state and before the mounting state.
    Type: Grant
    Filed: November 16, 2023
    Date of Patent: December 31, 2024
    Assignee: SHIMANO INC.
    Inventors: Hiroshi Fujita, Atsuhiro Emura
  • Publication number: 20240425645
    Abstract: A method for producing a decolorized polyester according to the present invention includes: a step of preparing a polyester colored with a colorant, and a decolorizing agent containing a glycol ether-type compound having a boiling point at atmospheric pressure of 160° C. or higher; and a step of removing the colorant, by bringing the decolorizing agent into contact at least once with the colored polyester while heating the decolorizing agent to a temperature equal to or lower than a melting point of the polyester, to thereby obtain the decolorized polyester.
    Type: Application
    Filed: September 9, 2024
    Publication date: December 26, 2024
    Applicants: SHINTECH CORPORATION, JEPLAN, INC.
    Inventors: Masaki TAKAO, Toru SAKAI, Hiroshi FUJITA, Shuji INADA
  • Publication number: 20240429075
    Abstract: A substrate processing apparatus according to an embodiment includes a processing tank configured to store a chemical and perform processing by immersing a substrate in the chemical, a holder configured to hold the substrate and having a lifting part, a chemical liquid supply device configured to supply the chemical, a light irradiation part configured to irradiate light to the substrate taken out from the processing tank, the substrate being taken out from the processing tank by the lifting part after immersing the substrate in the chemical, a light detection part configured to detect reflected light generated from the light being reflected by the substrate, and a control device configured to control an amount of chemical supplied by the chemical liquid supply device in response to a detection result of the light detection part.
    Type: Application
    Filed: June 12, 2024
    Publication date: December 26, 2024
    Applicant: Kioxia Corporation
    Inventors: Ryo ITO, Hiroshi FUJITA, Tatsuhiko KOIDE
  • Patent number: 12168483
    Abstract: A steering apparatus includes a turning shaft movable in a vehicle widthwise direction, a pinion shaft meshed with the turning shaft and a first housing that retains therein the turning shaft and the pinion shaft. An inner circumferential surface of the first housing facing with the turning shaft is provided with an inclined portion that continuously changes an internal diameter. When a portion where a tooth of the turning shaft and a tooth of the pinion shaft are meshed with each other is defined as a meshed portion, the inclined portion is formed below at least the meshed portion.
    Type: Grant
    Filed: October 9, 2020
    Date of Patent: December 17, 2024
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Satoshi Enomoto, Hiroaki Mori, Hiroshi Fujita
  • Patent number: 12157796
    Abstract: A method for producing a decolorized polyester according to the present invention includes: a step of preparing a polyester colored with a colorant, and a decolorizing agent containing a glycol ether-type compound having a boiling point at atmospheric pressure of 160° C. or higher; and a step of removing the colorant, by bringing the decolorizing agent into contact at least once with the colored polyester while heating the decolorizing agent to a temperature equal to or lower than a melting point of the polyester, to thereby obtain the decolorized polyester.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: December 3, 2024
    Assignees: SHINTECH CORPORATION, JEPLAN, INC.
    Inventors: Masaki Takao, Toru Sakai, Hiroshi Fujita, Shuji Inada
  • Patent number: 12122460
    Abstract: A ball screw device includes a screw shaft, a plurality of balls, a nut, a pair of guide members, and a transmission member. The nut has a pair of large-diameter portions and a small-diameter part between the two large-diameter portions. The two guide members are attachable to and detachable from an outer circumferential surface of the small-diameter portion in a radial direction and are located with a certain gap in the outer circumferential direction of the small-diameter portion. A fitting portion of the transmission member fits over the two large-diameter portions such that the fitting portion covers the two guide members while restricting radially outward displacements thereof. The fitting portion works with the small-diameter portion and the two guide members to define a circulation passage through which the balls are circulated. The transmission member is coupled to the nut.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: October 22, 2024
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Satoshi Enomoto, Hiroshi Fujita
  • Publication number: 20240297146
    Abstract: According to one embodiment, a method for manufacturing a semiconductor device includes forming, on a substrate, an active layer in which a dopant is implanted; forming a porous layer by making the active layer porous by an anodization treatment; forming a device layer including at least a part of a configuration of the semiconductor device above the porous layer; and cleaving the porous layer to remove the substrate.
    Type: Application
    Filed: February 27, 2024
    Publication date: September 5, 2024
    Applicant: Kioxia Corporation
    Inventors: Shota KONUMA, Hiroshi FUJITA, Hisashi KATO, Naomi YANAI
  • Patent number: 12029386
    Abstract: An image reception unit receives a still image acquired by an endoscope system. The still image combination unit performs still image collation processing for collating an internal still image and an external still image out of the still images, combines the internal still image with the external still image on the basis of at least a result of the still image collation processing, and displays the combined internal still image and external still image on a service support display.
    Type: Grant
    Filed: May 19, 2022
    Date of Patent: July 9, 2024
    Assignee: FUJIFILM Corporation
    Inventors: Hiroshi Fujita, Haruo Akiba
  • Patent number: 11945518
    Abstract: A steer-by-wire steering device includes a first member, a second member, and stoppers. The first member is rotatable together with the input shaft, and includes a first protrusion protruding from the input shaft in the radial direction. The second member includes a second protrusion protruding on the trajectory of the first protrusion, and is rotatable together with the first member with the first protrusion being abutting the second protrusion. The stoppers are provided at respective positions capable of abutting on the trajectory of the second protrusion only when the second member is rotated by the first member.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: April 2, 2024
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Hiroshi Fujita, Hirotoshi Uchibori
  • Publication number: 20240092455
    Abstract: A lock device comprises a first lock member and a second lock member. The first lock member includes a first axial end, a second axial end, and a first surface. The first axial end is configured to be detachably attached to a sprocket support body of the rear hub assembly in a mounting state where the plurality of rear sprockets is mounted to the rear hub assembly. The second lock member includes a third axial end, a fourth axial end, and a second surface. The third axial end is configured to be attached to the second axial end of the first lock member in an assembled state where a smallest sprocket and the lock device are assembled as one unit. The lock device is configured so that the smallest sprocket is slidable relative to the lock device in the axial direction in the assembled state and before the mounting state.
    Type: Application
    Filed: November 16, 2023
    Publication date: March 21, 2024
    Applicant: SHIMANO INC.
    Inventors: Hiroshi FUJITA, Atsuhiro EMURA