Patents by Inventor Junichi Matsumura

Junichi Matsumura 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: 20240173904
    Abstract: The manufacturing apparatus includes a nozzle, an injection cylinder, an injection plunger, a plunger pressing member, and a movable unit for moving the plunger pressing member. The movable unit has a ball screw including a moving member and a screw shaft, and the moving member is movable to a first position, a second position, and a third position along the screw shaft. A central processing unit (CPU) of a control apparatus controls the movable unit to move the moving member to the third position in a repetition of an injection operation in which the moving member is moved between the first position and the second position.
    Type: Application
    Filed: November 27, 2023
    Publication date: May 30, 2024
    Inventors: JUNICHI MATSUMURA, KENGO NAKAJIMA, AKIRA SUZUKI, TOSHIKI KOBAYASHI, NOBUHARU HOSHI, TOSHITERU YAMASAKI
  • Patent number: 11993041
    Abstract: Provided is a tire vulcanizing bladder comprising fluororubber, wherein a plurality of grooves extending in a width direction are formed on a circumference of an outer surface of the tire vulcanizing bladder, and a plurality of recesses connecting the grooves to each other are formed between the grooves. Also provided is a pneumatic tire comprising one or more fluorine-containing particles having a maximum diameter of 1.0 ?m or more per area of 100 ?m2 of a tire inner surface, wherein a plurality of bladder ridges extending in a tire width direction are formed on a circumference of the tire inner surface, and a plurality of protrusions connecting the bladder ridges to each other are formed between the bladder ridges.
    Type: Grant
    Filed: June 14, 2018
    Date of Patent: May 28, 2024
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Junichi Oride, Yasuhiro Oda, Isao Matsumura, Yuya Morita
  • Patent number: 11912036
    Abstract: An ink tank that enables to check whether a cover of an ink tank is normally bonded to the ink tank includes a first chamber having a supply port for supplying ink to a printing head that ejects ink, a second chamber having an external air introduction port capable of introducing external air, a partition wall configured to separate the first chamber and the second chamber, a communication path provided in the partition wall and configured to place the first chamber and the second chamber in communication with each other, a first cover member configured to cover an opening of the first chamber without extending over an opening of the second chamber, and a second cover member configured to cover the opening of the second chamber without extending over the opening of the first chamber.
    Type: Grant
    Filed: September 29, 2021
    Date of Patent: February 27, 2024
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Koki Shimada, Hideaki Matsumura, Masaya Shimmachi, Yukimichi Kimura, Junichi Kubokawa, Takahiro Kiuchi, Yusuke Tanaka, Kyohei Sato
  • Publication number: 20230382028
    Abstract: In an injection apparatus, a movable unit includes a ball screw including a moving block and a screw shaft. The moving block moves in a predetermined direction and is joined to an injection plunger. The screw shaft rotates to move the moving block. The screw shaft and the injection plunger are disposed side by side in a direction orthogonal to the predetermined direction. A fixing unit includes a first portion for holding a rear end part of the screw shaft, a second portion for holding a front end part of the screw shaft, and a third portion for holding the injection cylinder. The moving block is provided between the first portion and the second portion. The third portion is provided to be pressed by the injection cylinder when the injection plunger presses the resin.
    Type: Application
    Filed: May 22, 2023
    Publication date: November 30, 2023
    Inventors: TOSHIKI KOBAYASHI, JUNICHI MATSUMURA, KENGO NAKAJIMA, AKIRA SUZUKI
  • Publication number: 20230347559
    Abstract: A mold includes a rotatable portion, a frame portion, a first and second portion, and a production unit. The rotatable portion has a plurality of surfaces and a plurality of forming portions. The plurality of surfaces is each provided with one of the plurality of forming portions, each having the same shape. The frame portion rotatably supports the rotatable portion. The first portion defines a cavity by coming into contact with one surface of the plurality of surfaces by clamping the mold. The second portion comes into contact with another surface of the plurality of surfaces different from the one surface by clamping the mold. The production unit attached to the frame portion.
    Type: Application
    Filed: June 30, 2023
    Publication date: November 2, 2023
    Inventors: Toshiteru Yamasaki, Nobuharu Hoshi, Junichi Matsumura, Akira Suzuki, Hiroki Akatsuka
  • Publication number: 20230302698
    Abstract: A manufacturing apparatus includes an injection cylinder to which molten resin is supplied and which is configured to inject the molten resin, and an injection plunger disposed such that the injection plunger fits in the injection cylinder and moves in a first direction and a second direction opposite to the first direction. The injection cylinder includes a base body configured to contain the molten resin, and a sleeve configured to be detachably attached to the base body. The injection plunger is configured to be inserted into an inner portion of the base body through an opening portion formed in the sleeve and slide on the sleeve.
    Type: Application
    Filed: March 15, 2023
    Publication date: September 28, 2023
    Inventors: AKIRA SUZUKI, TOSHIKI KOBAYASHI, JUNICHI MATSUMURA, KENGO NAKAJIMA
  • Publication number: 20230240513
    Abstract: A steerable catheter driven by a robotic controller comprises: a catheter body having a catheter tip and tool channel which spans from a proximal end of the catheter body and through the catheter tip along a catheter axis. The catheter tip includes a ramp-like surface formed inside part of the tool channel diameter. The ramp-like surface is an inclined flat surface formed at an angle with respect to a plane parallel to the catheter axis, such that the angle increases as the ramp-like surface spans from distal end towards the proximal end of the catheter tip. A housing mechanism permanently attached to an imaging device is configured to lock the imaging device to the ramp-like surface so as to prevent rotation of the imaging device with respect to the tool channel and/or prevent twisting of the catheter tip with respect to the imaging device.
    Type: Application
    Filed: February 2, 2022
    Publication date: August 3, 2023
    Inventors: Benedict Shia, Junichi Matsumura, Takahisa Kato
  • Patent number: 11584052
    Abstract: An assembling apparatus that has a mold in which a second unit opposes a first unit and that is configured to assemble an assembled product from a plurality of parts. The first unit includes first, second, and third movable portions, which comprise, respectively, a plurality of first forming portions, a plurality of second forming portions, and a plurality of third forming. The second unit comprises a fourth movable portion, a fourth forming portion, a fifth forming portion, a sixth forming portion, and a plurality of assembling portions. The fourth movable portion is configured to move so as to switch at least one assembling portion opposed to at least one first forming portion, at least one other assembling portion opposed to the at least one second forming portion, and at least one remaining assembling portion opposed to at least one third forming portion.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: February 21, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Junichi Matsumura, Akira Suzuki, Toshiteru Yamasaki, Junji Yonemasu, Nobuharu Hoshi, Takashi Konishi
  • Patent number: 10802419
    Abstract: A method of manufacturing a developer container including a frame configured to define a developer containing portion, a first electrode, and a second electrode arranged on a surface of the frame and having a surface opposed to the first electrode, a developer amount in the developer containing portion being detected based on a capacitance between the first electrode and the second electrode, the method including: holding a conductive resin member constituting the second electrode on a mold configured to mold the frame, a surface of the conductive resin member being in contact with a surface of the mold configured to mold a surface of the frame on a side of the developer containing portion; injecting a resin to be formed into the frame, into the mold on which the conductive resin member is held; and curing the resin to form the frame to which the second electrode is fixed.
    Type: Grant
    Filed: April 18, 2018
    Date of Patent: October 13, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Taku Watanabe, Masahito Kato, Go Shindo, Atsushi Toda, Katsuichi Abe, Motonari Ito, Akira Suzuki, Junichi Matsumura, Naoki Matsumaru
  • Patent number: 10496035
    Abstract: A molded resin product for use with an image forming apparatus includes: a base portion formed of a resin material; a positioning portion provided on the base portion; and a movable member formed by injection molding so as to be movable relative to the base portion. When the molded resin product is connected to a connection part, the positioning portion positions the molded resin product and the connection part relative to each other, and the movable member is contactable to a contact portion of the connection part.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: December 3, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Junichi Matsumura, Akira Suzuki, Ryoji Kusudo
  • Patent number: 10165958
    Abstract: A method for detecting a position of a signal source in a living body includes: arranging three electrodes on a surface of the living body and alternately connecting a first external resistance and a second external resistance in parallel between the electrodes and a ground potential; measuring first voltages Vi (i=1, 2, 3) generated at the respective electrodes when the first external resistance is connected in parallel between the electrodes and the ground potential, and second voltages Vi (i=1, 2, 3) generated at the respective electrodes when the second external resistance is connected in parallel between the electrodes and the ground potential; and calculating three ratios Vi/V?i (i=1, 2, 3) from the first and second voltages Vi and V?i, and detecting the position of the signal source in the living body based on the three ratios Vi/V?i (i=1, 2, 3).
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: January 1, 2019
    Assignees: TORAY ENGINEERING CO., LTD., THE RITSUMEIKAN TRUST
    Inventors: Junichi Matsumura, Chisa Inaka, Masaaki Makikawa, Yusuke Sakaue
  • Publication number: 20180370094
    Abstract: A mold includes a rotatable portion, a frame portion, a first and second portion, and a production unit. The rotatable portion has a plurality of surfaces and a plurality of forming portions. The plurality of surfaces is each provided with one of the plurality of forming portions, each having the same shape. The frame portion rotatably supports the rotatable portion. The first portion defines a cavity by coming into contact with one surface of the plurality of surfaces by clamping the mold. The second portion comes into contact with another surface of the plurality of surfaces different from the one surface by clamping the mold. The production unit attached to the frame portion.
    Type: Application
    Filed: June 19, 2018
    Publication date: December 27, 2018
    Inventors: Toshiteru Yamasaki, Nobuharu Hoshi, Junichi Matsumura, Akira Suzuki, Hiroki Akatsuka
  • Patent number: 10162289
    Abstract: A fixing portion 18c for suppressing movement of a developer bag 16 when the developer bag 16 is unsealed by moving a sealing member 19 is provided. By this, unsealing becomes easy.
    Type: Grant
    Filed: January 16, 2018
    Date of Patent: December 25, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroomi Matsuzaki, Junichi Matsumura, Kazuki Matsumoto, Tatsuo Fujisaki, Kojiro Yasui
  • Publication number: 20180311871
    Abstract: A method of producing an assembled product includes a first step of clamping a mold including a first unit and a second unit, a second step of forming the plurality of parts by injecting molten resin into each of a plurality of cavities, a third step of opening the mold, and a fourth step of respectively opposing the plurality of parts held by the first unit in the third step to corresponding assembling portions of the second unit. The first through fourth steps are repetitively performed, and in the first step, the plurality of parts held by the first unit are supplied to the corresponding assembling portions, and the plurality of cavities are defined by first forming portions of the first unit and second forming portions of the second unit.
    Type: Application
    Filed: April 23, 2018
    Publication date: November 1, 2018
    Inventors: Junichi Matsumura, Akira Suzuki, Toshiteru Yamasaki, Junji Yonemasu, Nobuharu Hoshi, Takashi Konishi
  • Publication number: 20180239276
    Abstract: A method of manufacturing a developer container including a frame configured to define a developer containing portion, a first electrode, and a second electrode arranged on a surface of the frame and having a surface opposed to the first electrode, a developer amount in the developer containing portion being detected based on a capacitance between the first electrode and the second electrode, the method including: holding a conductive resin member constituting the second electrode on a mold configured to mold the frame, a surface of the conductive resin member being in contact with a surface of the mold configured to mold a surface of the frame on a side of the developer containing portion; injecting a resin to be formed into the frame, into the mold on which the conductive resin member is held; and curing the resin to form the frame to which the second electrode is fixed.
    Type: Application
    Filed: April 18, 2018
    Publication date: August 23, 2018
    Inventors: Taku Watanabe, Masahito Kato, Go Shindo, Atsushi Toda, Katsuichi Abe, Motonari Ito, Akira Suzuki, Junichi Matsumura, Naoki Matsumaru
  • Publication number: 20180224800
    Abstract: A molded resin product for use with an image forming apparatus includes: a base portion formed of a resin material; a positioning portion provided on the base portion; and a movable member formed by injection molding so as to be movable relative to the base portion. When the molded resin product is connected to a connection part, the positioning portion positions the molded resin product and the connection part relative to each other, and the movable member is contactable to a contact portion of the connection part.
    Type: Application
    Filed: January 31, 2018
    Publication date: August 9, 2018
    Inventors: Junichi Matsumura, Akira Suzuki, Ryoji Kusudo
  • Patent number: 10001727
    Abstract: A fixing portion 18c for suppressing movement of a developer bag 16 when the developer bag 16 is unsealed by moving a sealing member 19 is provided. By this, unsealing becomes easy.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: June 19, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroomi Matsuzaki, Junichi Matsumura, Kazuki Matsumoto, Tatsuo Fujisaki, Kojiro Yasui
  • Patent number: 9989888
    Abstract: A method of manufacturing a developer container including a frame configured to define a developer containing portion, a first electrode, and a second electrode arranged on a surface of the frame and having a surface opposed to the first electrode, a developer amount in the developer containing portion being detected based on a capacitance between the first electrode and the second electrode, the method including: holding a conductive resin member constituting the second electrode on a mold configured to mold the frame, a surface of the conductive resin member being in contact with a surface of the mold configured to mold a surface of the frame on a side of the developer containing portion; injecting a resin to be formed into the frame, into the mold on which the conductive resin member is held; and curing the resin to form the frame to which the second electrode is fixed.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: June 5, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Taku Watanabe, Masahito Kato, Go Shindo, Atsushi Toda, Katsuichi Abe, Motonari Ito, Akira Suzuki, Junichi Matsumura, Naoki Matsumaru
  • Publication number: 20180136588
    Abstract: A fixing portion 18c for suppressing movement of a developer bag 16 when the developer bag 16 is unsealed by moving a sealing member 19 is provided. By this, unsealing becomes easy.
    Type: Application
    Filed: January 16, 2018
    Publication date: May 17, 2018
    Inventors: Hiroomi Matsuzaki, Junichi Matsumura, Kazuki Matsumoto, Tatsuo Fujisaki, Kojiro Yasui
  • Patent number: 9921544
    Abstract: A molded resin product for use with an image forming apparatus includes: a base portion formed of a resin material; a positioning portion provided on the base portion; and a movable member formed by injection molding so as to be movable relative to the base portion. When the molded resin product is connected to a connection part, the positioning portion positions the molded resin product and the connection part relative to each other, and the movable member is contactable to a contact portion of the connection part.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: March 20, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Junichi Matsumura, Akira Suzuki, Ryoji Kusudo