Patents by Inventor Yuki Miwa

Yuki Miwa 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: 20240158563
    Abstract: The blocked isocyanate composition of the present invention comprises a blocked isocyanate that is derived from a triisocyanate compound (A) represented by general formula (1), a diol compound (B), a hydrophilic compound (C) and a blocking agent (D).
    Type: Application
    Filed: April 18, 2022
    Publication date: May 16, 2024
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Yuichi MIWA, Kana WATANABE, Yuki NAKANISHI
  • Patent number: 11891307
    Abstract: A silica-based particle dispersion including a silica-based particle group and a high polishing rate and high surface precision is achieved to a silica-based substrate or a NiP-plated substrate to be polished or the like. A silica-based particle dispersion containing a group including irregularly-shaped and non-irregularly-shaped silica-based particles, wherein the irregularly-shaped silica-based particles each have a plurality of small holes thereinside and a covering silica layer which covers the core, and the silica-based particle group satisfies [1]-[3]. [1] Having an average particle size (D1) of 100-600 nm, and a particle size (D2) of 30-300 nm in terms of specific surface area. [2] An irregular-shape degree D (D=D1/D3) represented by the average particle size (D1) and a projected area-equivalent particle size (D3) being in the range of 1.1-5.0. [3] When waveform separation is performed on a volume-reference particle size distribution, a multi-peak distribution in which three or more peaks are detected.
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: February 6, 2024
    Assignee: JGC CATALYSTS AND CHEMICALS LTD.
    Inventors: Michio Komatsu, Kazuhiro Nakayama, Tetsuya Tanaka, Yuji Tawarazako, Tatsuya Mukai, Yuki Miwa
  • Patent number: 11839925
    Abstract: A reciprocating cutting tool reduces deteriorating movement of an operating drum due to entry of chips between the operating drum and a housing. A reciprocating cutting tool includes a motor, a slider being rod-like and extending in a front-rear direction, a reciprocation converter that converts rotation of the motor to reciprocation in the front-rear direction and transmits the reciprocation to the slider, a power transmission housing accommodating the reciprocation converter, a tip tool holder at a front end of the slider to detachably receive a tip tool, and an operating drum operable to attach or detach the tip tool with the tip tool holder through rotation. The operating drum is rotatably held on the power transmission housing with one or more ring members.
    Type: Grant
    Filed: July 1, 2022
    Date of Patent: December 12, 2023
    Assignee: MAKITA CORPORATION
    Inventors: Tomohiro Ukai, Yuki Miwa
  • Patent number: 11633795
    Abstract: An easily operable, highly durable cutting machine finely adjusts the miter angle of a turntable. A cutting machine includes a turntable supported in a manner rotatable horizontally to a base and including a substantially disk-shaped table body to receive a workpiece and a table extension protruding forward from the table body, a cutting machine body located above the turntable and connected in a manner swingable vertically to the turntable, and a fine angle adjuster that adjusts a rotation angle of the turntable with respect to the base and including a rack on the base, a pinion located in the table body within an area of the table body as viewed from above and engageable with the rack directly or indirectly, and an operation part operable to rotate the pinion.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: April 25, 2023
    Assignee: MAKITA CORPORATION
    Inventors: Yuki Miwa, Goh Yamamura
  • Publication number: 20230027158
    Abstract: A reciprocating cutting tool reduces deteriorating movement of an operating drum due to entry of chips between the operating drum and a housing. A reciprocating cutting tool includes a motor, a slider being rod-like and extending in a front-rear direction, a reciprocation converter that converts rotation of the motor to reciprocation in the front-rear direction and transmits the reciprocation to the slider, a power transmission housing accommodating the reciprocation converter, a tip tool holder at a front end of the slider to detachably receive a tip tool, and an operating drum operable to attach or detach the tip tool with the tip tool holder through rotation. The operating drum is rotatably held on the power transmission housing with one or more ring members.
    Type: Application
    Filed: July 1, 2022
    Publication date: January 26, 2023
    Applicant: MAKITA CORPORATION
    Inventors: Tomohiro UKAI, Yuki MIWA
  • Publication number: 20220362867
    Abstract: A reciprocating cutting tool includes a shoe that is less likely to slip off when pulled frontward, for positioning the shoe, beyond a predetermined position such as a maximum pull position. The reciprocating cutting tool includes a motor, a slider being rod-like and including a tip tool holder, a reciprocation converter that converts rotation of the motor to reciprocation in a direction in which the slider extends and transmits the reciprocation to the slider, a shoe slidable in a front-rear direction to come in contact with a workpiece to which the tip tool is applied, a shoe lock unit engageable with the shoe to restrict the shoe from sliding and disengageable from the shoe to allow the shoe to slide, and a pin that interferes with the shoe slid to a predetermined position.
    Type: Application
    Filed: March 31, 2022
    Publication date: November 17, 2022
    Applicant: MAKITA CORPORATION
    Inventor: Yuki Miwa
  • Patent number: 11383311
    Abstract: A compound miter saw (1; 70; 90) includes a turntable-fixing mechanism (40) and a tilt-fixing mechanism (60; 80; 100) configured to respectively fix the miter angle and tilt (bevel) angle of a cutting-machine main body (10). The turntable-fixing mechanism includes a fixing rod (42) configured to lock rotation of a turntable (4; 91) relative to a base (2) by manually rotating a grip (41) attached thereto, and is disposed forward of a front surface of a table-extension part (5; 71; 92), downward of an upper surface of the turntable, and at the center of the table-extension part in the left-right direction. The tilt-fixing mechanism includes a manually rotatable tilt-fixing manipulatable part (61; 81; 101) provided between the front surface of the table-extension part and the grip. A rotary shaft (61a; 82a; 102a) of the tilt-fixing manipulatable part is coaxial with the fixing rod (rotary shaft) attached to the grip.
    Type: Grant
    Filed: July 16, 2020
    Date of Patent: July 12, 2022
    Assignee: MAKITA CORPORATION
    Inventors: Yukinori Suzuki, Toshiyuki Kani, Yuki Miwa
  • Publication number: 20220168828
    Abstract: A sliding cutting machine (1) includes: at least one slide bar (51) having an elongated shape; a slide base (17) slidably mounted on the at least one slide bar (51); and a cutting-machine main body (10) mounted on the slide base (17) such that it is movable in an up-down direction relative to the slide base (17). The cutting-machine main body (10) includes: an output shaft (27) that extends in an axial direction orthogonal to an extension direction of the at least one slide bar (51) and on which a cutting tool (11) is mounted; and an electric motor (21) disposed between the cutting tool (11) and the at least one slide bar (51), as viewed along the extension direction of the at least one slide bar (51), while the output shaft (27) is rotating and the cutting tool (11) is vertical.
    Type: Application
    Filed: November 24, 2021
    Publication date: June 2, 2022
    Inventors: Toshiyuki KANI, Yukinori SUZUKI, Yuki MIWA
  • Patent number: 11285553
    Abstract: A benchtop cutting machine (1), such as a miter saw, includes: a base (2); a turntable (3), which is rotatable relative to the base; and a lock mechanism (40), which locks the rotation of the turntable relative to the base. The lock mechanism comprises a locking pin (45), which is movable along its axial direction and locks the rotation of the turntable by engaging with the base, and a manipulatable lever (41), which is pivotable in an up-down direction to release the engagement of the locking pin from the base. The manipulatable lever has a pivot point or center of rotation (42) that is located upward of the locking pin.
    Type: Grant
    Filed: July 23, 2020
    Date of Patent: March 29, 2022
    Assignee: MAKITA CORPORATION
    Inventors: Goh Yamamura, Yuki Miwa
  • Publication number: 20220055908
    Abstract: A silica-based particle dispersion including a silica-based particle group and a high polishing rate and high surface precision is achieved to a silica-based substrate or a NiP-plated substrate to be polished or the like. A silica-based particle dispersion containing a group including irregularly-shaped and non-irregularly-shaped silica-based particles, wherein the irregularly-shaped silica-based particles each have a plurality of small holes thereinside and a covering silica layer which covers the core, and the silica-based particle group satisfies [1]-[3]. [1] Having an average particle size (D1) of 100-600 nm, and a particle size (D2) of 30-300 nm in terms of specific surface area. [2] An irregular-shape degree D (D=D1/D3) represented by the average particle size (D1) and a projected area-equivalent particle size (D3) being in the range of 1.1-5.0. [3] When waveform separation is performed on a volume-reference particle size distribution, a multi-peak distribution in which three or more peaks are detected.
    Type: Application
    Filed: October 4, 2019
    Publication date: February 24, 2022
    Applicant: JGC CATALYSTS AND CHEMICALS LTD.
    Inventors: Michio KOMATSU, Kazuhiro NAKAYAMA, Tetsuya TANAKA, Yuji TAWARAZAKO, Tatsuya MUKAI, Yuki MIWA
  • Publication number: 20210053129
    Abstract: A compound miter saw (1; 70; 90) includes a turntable-fixing mechanism (40) and a tilt-fixing mechanism (60; 80; 100) configured to respectively fix the miter angle and tilt (bevel) angle of a cutting-machine main body (10). The turntable-fixing mechanism includes a fixing rod (42) configured to lock rotation of a turntable (4; 91) relative to a base (2) by manually rotating a grip (41) attached thereto, and is disposed forward of a front surface of a table-extension part (5; 71; 92), downward of an upper surface of the turntable, and at the center of the table-extension part in the left-right direction. The tilt-fixing mechanism includes a manually rotatable tilt-fixing manipulatable part (61; 81; 101) provided between the front surface of the table-extension part and the grip. A rotary shaft (61a; 82a; 102a) of the tilt-fixing manipulatable part is coaxial with the fixing rod (rotary shaft) attached to the grip.
    Type: Application
    Filed: July 16, 2020
    Publication date: February 25, 2021
    Inventors: Yukinori SUZUKI, Toshiyuki KANI, Yuki MIWA
  • Publication number: 20210039177
    Abstract: A benchtop cutting machine (1), such as a miter saw, includes: a base (2); a turntable (3), which is rotatable relative to the base; and a lock mechanism (40), which locks the rotation of the turntable relative to the base. The lock mechanism comprises a locking pin (45), which is movable along its axial direction and locks the rotation of the turntable by engaging with the base, and a manipulatable lever (41), which is pivotable in an up-down direction to release the engagement of the locking pin from the base. The manipulatable lever has a pivot point or center of rotation (42) that is located upward of the locking pin.
    Type: Application
    Filed: July 23, 2020
    Publication date: February 11, 2021
    Inventors: Goh YAMAMURA, Yuki MIWA
  • Patent number: 10914422
    Abstract: A grease discharge device includes a motor, a plunger, a grease supply unit, a pump, a check valve, and a relief valve. The plunger reciprocates by driving of the motor. The grease supply unit supplies grease to a forward movement side with respect to a backward movement side dead center of the plunger. The pump performs a discharge behavior of the grease by the reciprocation of the plunger. The check valve is disposed at a downstream side with respect to a forward movement side dead center of the plunger in a discharge path of the grease inside the pump. The relief valve is disposed between a supply portion of the grease by the grease supply unit and the check valve. The relief valve releases the grease inside the discharge path to the grease supply unit side according to a pressure rise inside the discharge path.
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: February 9, 2021
    Assignee: MAKITA CORPORATION
    Inventors: Tomofumi Kawai, Akihito Hara, Koji Tanaka, Yuki Miwa
  • Publication number: 20200130080
    Abstract: An easily operable, highly durable cutting machine finely adjusts the miter angle of a turntable. A cutting machine includes a turntable supported in a manner rotatable horizontally to a base and including a substantially disk-shaped table body to receive a workpiece and a table extension protruding forward from the table body, a cutting machine body located above the turntable and connected in a manner swingable vertically to the turntable, and a fine angle adjuster that adjusts a rotation angle of the turntable with respect to the base and including a rack on the base, a pinion located in the table body within an area of the table body as viewed from above and engageable with the rack directly or indirectly, and an operation part operable to rotate the pinion.
    Type: Application
    Filed: September 25, 2019
    Publication date: April 30, 2020
    Applicant: MAKITA CORPORATION
    Inventors: Yuki MIWA, Goh YAMAMURA
  • Publication number: 20180340652
    Abstract: A grease discharge device includes a motor, a plunger, a grease supply unit, a pump, a check valve, and a relief valve. The plunger reciprocates by driving of the motor. The grease supply unit supplies grease to a forward movement side with respect to a backward movement side dead center of the plunger. The pump performs a discharge behavior of the grease by the reciprocation of the plunger. The check valve is disposed at a downstream side with respect to a forward movement side dead center of the plunger in a discharge path of the grease inside the pump. The relief valve is disposed between a supply portion of the grease by the grease supply unit and the check valve. The relief valve releases the grease inside the discharge path to the grease supply unit side according to a pressure rise inside the discharge path.
    Type: Application
    Filed: April 26, 2018
    Publication date: November 29, 2018
    Applicant: MAKITA CORPORATION
    Inventors: Tomofumi KAWAI, Akihito HARA, Koji TANAKA, Yuki MIWA
  • Patent number: 9975076
    Abstract: A honeycomb filter includes a plurality of honeycomb fired bodies and adhesive layers. Each of the plurality of honeycomb fired bodies includes a plurality of cells, porous cell walls, and an outer wall. The plurality of cells includes exhaust gas introduction cells and exhaust gas emission cells. The exhaust gas introduction cells and the exhaust gas emission cells each have a uniform cross-sectional shape throughout from the exhaust gas inlet side to the exhaust gas outlet side excluding a plugged portion in a cross section perpendicular to a longitudinal direction of the plurality of cells. Each of the exhaust gas emission cells is adjacently surrounded fully by the exhaust gas introduction cells across the porous cell walls. The plurality of cells includes outer cells which are adjacent to the outer wall and which include the exhaust gas introduction cells.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: May 22, 2018
    Assignee: IBIDEN CO., LTD.
    Inventors: Toshiaki Shibata, Yuki Miwa
  • Patent number: 9919255
    Abstract: A honeycomb filter includes a plurality of honeycomb fired bodies. Each of the plurality of honeycomb fired bodies includes an outer wall, a plurality of cells, and porous cell walls. The plurality of cells include exhaust gas introduction cells each having an open end at an exhaust gas inlet side and a plugged end at an exhaust gas outlet side and exhaust gas emission cells each having an open end at the exhaust gas outlet side and a plugged end at the exhaust gas inlet side. Sub-cells adjacent to the outer wall include exhaust gas introduction sub-cells among the exhaust gas introduction cells and exhaust gas emission sub-cells among the exhaust gas emission cells. A total volume of the exhaust gas emission sub-cells adjacent to the outer wall is greater than a total volume of the exhaust gas introduction sub-cells adjacent to the outer wall.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: March 20, 2018
    Assignee: IBIDEN CO., LTD.
    Inventors: Toshiaki Shibata, Yuki Miwa
  • Patent number: 9861923
    Abstract: A honeycomb filter includes a plurality of cells and porous cell walls. The plurality of cells defines exhaust gas passages. The plurality of cells includes exhaust gas introduction cells and exhaust gas emission cells. Each of the exhaust gas emission cells is adjacently surrounded fully by the exhaust gas introduction cells across the porous cell walls. The exhaust gas introduction cells include first exhaust gas introduction cells and second exhaust gas introduction cells. A cross-sectional area of each of the exhaust gas emission cells in a cross section perpendicular to a longitudinal direction of the plurality of cells is equal to or larger than a cross-sectional area of each of the second exhaust gas introduction cells in the cross section. The exhaust gas introduction cells and the exhaust gas emission cells have one of a first structure and a second structure in the cross section.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: January 9, 2018
    Assignee: IBIDEN CO., LTD.
    Inventors: Toshiaki Shibata, Yuki Miwa
  • Patent number: D887231
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: June 16, 2020
    Assignee: MAKITA CORPORATION
    Inventors: Wataru Suzuki, Tomofumi Kawai, Koji Tanaka, Yuki Miwa
  • Patent number: D944614
    Type: Grant
    Filed: January 8, 2020
    Date of Patent: March 1, 2022
    Assignee: MAKITA CORPORATION
    Inventors: Kento Nakamura, Goh Yamamura, Yuto Yoshida, Yuki Miwa