Patents by Inventor Shinya Koyama

Shinya Koyama 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: 20250099920
    Abstract: A semipermeable membrane comprising a polyether sulfone, a sulfonated polyarylene ether copolymer, and polyvinylpyrrolidone, having cytokine adsorption capabilities suitable for continuous renal replacement therapy. The sulfonated polyarylene ether copolymer includes a hydrophobic segment repeating unit represented by a formula (1) and a hydrophilic segment repeating unit represented by a formula (2) as copolymerization components. A ratio of (the polyether sulfone)/(the sulfonated polyarylene ether copolymer)/(the polyvinylpyrrolidone) (in mass) in the entirety of the semipermeable membrane is (75 to 90)/(7 to 22)/(3 to 18).
    Type: Application
    Filed: July 11, 2022
    Publication date: March 27, 2025
    Applicants: TOYOBO CO., LTD., KANEKA CORPORATION
    Inventors: Shinya Koyama, Koji Fujita
  • Patent number: 12038146
    Abstract: A vehicular lamp fitting capable of suppressing vibration of a reflector (vibration that is occurred during vehicle travel, etc.) is provided. A vehicular lamp fitting comprising a first holding member that holds both a light source and a light control member that controls light emitted by the light source; a second holding member that holds the first holding member so as to be tiltable in the up, down, left and right directions; a vibration suppression unit that suppresses vibration of the first holding member relative to the second holding member; and the vibration suppression unit comprising: a first portion provided on the first holding member; a second portion, which is provided on the second holding member and suppresses the vibration of the first holding member with respect to the second holding member by abutting the first portion vibrating in the vibration direction of the first holding member.
    Type: Grant
    Filed: March 23, 2022
    Date of Patent: July 16, 2024
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventors: Taiki Ueno, Shinya Koyama
  • Publication number: 20240175562
    Abstract: A vehicular lamp fitting capable of suppressing vibration of a reflector (vibration that is occurred during vehicle travel, etc.) is provided. A vehicular lamp fitting comprising a first holding member that holds both a light source and a light control member that controls light emitted by the light source; a second holding member that holds the first holding member so as to be tiltable in the up, down, left and right directions; a vibration suppression unit that suppresses vibration of the first holding member relative to the second holding member; and the vibration suppression unit comprising: a first portion provided on the first holding member; a second portion, which is provided on the second holding member and suppresses the vibration of the first holding member with respect to the second holding member by abutting the first portion vibrating in the vibration direction of the first holding member.
    Type: Application
    Filed: March 23, 2022
    Publication date: May 30, 2024
    Inventors: Taiki UENO, Shinya KOYAMA
  • Patent number: 11831254
    Abstract: The present invention provides a vibrator made of a non-lead-based piezoelectric material and capable of being driven at a sufficient speed with low power consumption, and provides a vibration wave drive device and an electronical device each using the vibrator. To that end, the vibrator according to the present invention includes a piezoelectric element including a piezoelectric material and electrodes, and an elastic body, wherein a Pb component contained in the piezoelectric material is less than 1000 ppm, and a resonance frequency fA in a vibration mode A and a resonance frequency fB in a vibration mode B satisfy a relation of an absolute value of (fB?fA)>2 (kHz), the vibration mode A and the vibration mode B generating vibration waves in the elastic body with wave fronts of the vibration waves intersecting each other.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: November 28, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tatsuo Furuta, Takayuki Watanabe, Miki Ueda, Shinya Koyama, Makoto Kubota, Takanori Matsuda, Akira Uebayashi, Jumpei Hayashi, Hitoshi Nishitani
  • Patent number: 11469689
    Abstract: A vibration wave motor includes an annular oscillator, and an annular moving member provided so as to be in press contact with the oscillator. The oscillator includes an annular vibrating plate, and an annular piezoelectric element provided on a first surface of the vibrating plate. The vibrating plate is in contact with the moving member via a second surface of the vibrating plate, which is opposite the first surface. The piezoelectric element has a plurality of drive phase electrodes. When a driving region represents a region of the oscillator in which the drive phase electrodes are provided, and a non-driving region represents a remaining region of the oscillator, a contact area ratio S1 between the vibrating plate and the moving member in the non-driving region is less than a contact area ratio S2 between the vibrating plate and the moving member in the driving region.
    Type: Grant
    Filed: June 3, 2019
    Date of Patent: October 11, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tomohiro Watanabe, Akira Uebayashi, Tatsuo Furuta, Shinya Koyama
  • Patent number: 11272080
    Abstract: A vibration device comprises a vibrating member having at least n (n?2) piezoelectric elements arranged on a vibrating plate, each of the piezoelectric elements being formed by using a lead-free piezoelectric material and electrodes, wherein if the temperature that maximizes the piezoelectric constant of the piezoelectric material of each of the n piezoelectric elements is expressed as Tm (m being a natural number between 1 and n), at least two of T1 through Tn differ from each other.
    Type: Grant
    Filed: January 29, 2019
    Date of Patent: March 8, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yasushi Shimizu, Takanori Matsuda, Shinya Koyama, Makoto Kubota, Akira Uebayashi, Kanako Oshima
  • Patent number: 11258376
    Abstract: A vibration wave motor includes a driven body, a vibrator including an annular vibration plate and an annular piezoelectric element, and a vibration damping member, which are arranged in sequence, wherein the vibration plate has, on a side facing the driven body, radially extending groove portions at X places, and, when center depths of the groove portions at X places are sequentially denoted by D1 to DX in a circumferential direction, D1 to DX vary along a curve obtained by superposing one or more sine waves, and wherein the vibration plate is locally supported by the vibration damping member in some or all antinode portions of a standing wave occurring when the vibration wave motor is driven.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: February 22, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tatsuo Furuta, Akira Uebayashi, Tomohiro Watanabe, Shinya Koyama
  • Patent number: 11201571
    Abstract: Provided is a method of manufacturing an oscillator, including: arranging an electrode on a piezoelectric ceramics free from being subjected to polarization treatment, to thereby provide a piezoelectric element; bonding the piezoelectric element and a diaphragm to each other at a temperature T1; bonding the piezoelectric element and a power supply member to each other at a temperature T2; and subjecting the piezoelectric ceramics to polarization treatment at a temperature T3, in which the temperature T1, the temperature T2, and the temperature T3 satisfy a relationship T1>T3 and a relationship T2>T3.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: December 14, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Jumpei Hayashi, Kenichi Takeda, Shinya Koyama, Takayuki Watanabe, Yasushi Shimizu, Tatsuo Furuta, Miki Ueda, Akira Uebayashi, Hidenori Tanaka, Makoto Kubota
  • Patent number: 11081638
    Abstract: A piezoelectric element includes a piezoelectric material layer and an electrode layer, wherein the piezoelectric material layer and the electrode layer are stacked on top of each other, the piezoelectric material layer includes a barium titanate-based material, and two coercive fields Ec1 and Ec2 of the piezoelectric element have the same sign and satisfy (|Ec2|?|Ec1|)?8 kV/cm.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: August 3, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Jumpei Hayashi, Makoto Kubota, Shinya Koyama, Tatsuo Furuta, Kanako Oshima
  • Patent number: 11038440
    Abstract: A vibrator which is constructed by bonding a piezoelectric element and an elastic body together via a bonding layer. The piezoelectric element has a piezoelectric ceramic and electrodes. The bonding layer has an unbonded region that is located close to a nodal line of a vibration in a primary out-of-plane vibration mode when the vibration is excited in the vibrator, and in the unbonded region, the piezoelectric element and the elastic body are not bonded together.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: June 15, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Miki Ueda, Tatsuo Furuta, Takayuki Watanabe, Shinya Koyama, Jumpei Hayashi, Makoto Kubota
  • Patent number: 10899409
    Abstract: A saddled vehicle includes: a vehicle body frame; an internal combustion engine supported at a lower portion of the vehicle body frame; a fuel tank supported at an upper portion of the vehicle body frame; and a canister. The canister is disposed around the fuel tank at a position lower than a seating portion of an occupant seat. A removable hermetic sealing cap or a one-way valve that prevents entry of rainwater from an outside is included in a drain pipe disposed at a lower portion of the canister. Accordingly, entry of rainwater into the canister is prevented with a simple structure.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: January 26, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Shinya Koyama, Akinobu Masunaga, Yoshiaki Nakashima, Makoto Hotozuka
  • Patent number: 10811592
    Abstract: A piezoelectric element, in which a piezoelectric material layer has a plurality of crystal particles and a plurality of void portions and, in at least one of two or more of the piezoelectric material layers, when the average thickness in the lamination direction of the piezoelectric material layer is defined as TP, the average circle-equivalent diameter of the plurality of crystal particles is defined as DG, the maximum length in the lamination direction of the plurality of void portions not contacting the electrode layers is defined as LV, and the average thickness of the electrode layers contacting the at least one piezoelectric material layer is defined as TE, 0.07TP?DG?0.33TP and TE?LV?0.3TP are established and the lead content is less than 1000 ppm.
    Type: Grant
    Filed: May 23, 2018
    Date of Patent: October 20, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Makoto Kubota, Jumpei Hayashi, Tatsuo Furuta, Kanako Oshima, Shinya Koyama
  • Patent number: 10775681
    Abstract: Provided is an ultrasonic motor including an annular vibrator and an annular moving member that is brought into pressure-contact with the vibrator. The vibrator includes an annular vibrating plate and an annular piezoelectric element. The piezoelectric element includes an annular lead-free piezoelectric ceramic piece, a common electrode arranged on one surface of the piezoelectric ceramic piece, and a plurality of electrodes arranged on the other surface of the piezoelectric ceramic piece. The plurality of electrodes include two drive phase electrodes, one or more non-drive phase electrodes, and one or more detection phase electrodes. A second surface of the vibrating plate includes a plurality of groove regions extending radially, and the depths of the groove regions change in a circumferential direction along a curve obtained by superimposing one or more sine waves on one another. The ultrasonic motor exhibits a sufficient drive speed while suppressing generation of an unnecessary vibration wave.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: September 15, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Makoto Kubota, Akira Uebayashi, Tatsuo Furuta, Shinya Koyama, Jumpei Hayashi, Hidenori Tanaka
  • Patent number: 10536097
    Abstract: An ultrasonic motor includes an annular vibrator and an annular moving member that is brought into pressure-contact with the vibrator. The vibrator includes an annular vibrating plate and an annular piezoelectric element. The piezoelectric element includes an annular lead-free piezoelectric ceramic piece, a common electrode arranged on one surface of the piezoelectric ceramic piece, and a plurality of electrodes arranged on the other surface of the piezoelectric ceramic piece. The plurality of electrodes include two drive phase electrodes, one or more non-drive phase electrodes, and one or more detection phase electrodes. A second surface of the vibrating plate includes a plurality of groove regions extending radially, and the depths of the groove regions change in a circumferential direction along a curve obtained by superimposing one or more sine waves on one another. The ultrasonic motor exhibits a sufficient drive speed while suppressing generation of an unnecessary vibration wave.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: January 14, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akira Uebayashi, Tatsuo Furuta, Miki Ueda, Hidenori Tanaka, Shinya Koyama, Kaoru Miura, Atsushi Kimura, Satoshi Fujita
  • Patent number: 10516091
    Abstract: An ultrasonic motor, usable in a drive control system and the like, includes an annular vibrator and an annular moving member arranged so as to be brought into pressure-contact with the vibrator. The vibrator includes an annular vibrating plate and an annular piezoelectric element. The piezoelectric element includes an annular piezoelectric ceramic piece, a common electrode arranged on one surface of the piezoelectric ceramic piece, and a plurality of electrodes arranged on the other surface of the piezoelectric ceramic piece. The piezoelectric ceramic piece contains lead in a content of less than 1,000 ppm. The plurality of electrodes include two drive phase electrodes, one or more non-drive phase electrodes, and one or more detection phase electrodes.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: December 24, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tatsuo Furuta, Akira Uebayashi, Hidenori Tanaka, Shinya Koyama, Makoto Kubota, Jumpei Hayashi
  • Publication number: 20190379305
    Abstract: A vibration wave motor includes an annular oscillator, and an annular moving member provided so as to be in press contact with the oscillator. The oscillator includes an annular vibrating plate, and an annular piezoelectric element provided on a first surface of the vibrating plate. The vibrating plate is in contact with the moving member via a second surface of the vibrating plate, which is opposite of the first surface. The piezoelectric element has a plurality of drive phase electrodes. When a driving region represents a region of the oscillator in which each drive phase electrode is provided, and a non-driving region represents a remaining region of the oscillator, a contact area ratio S1 between the vibrating plate and the moving member in the non-driving region is less than a contact area ratio S2 between the vibrating plate and the moving member in the driving region.
    Type: Application
    Filed: June 3, 2019
    Publication date: December 12, 2019
    Inventors: Tomohiro Watanabe, Akira Uebayashi, Tatsuo Furuta, Shinya Koyama
  • Publication number: 20190334458
    Abstract: The present invention provides a vibrator made of a non-lead-based piezoelectric material and capable of being driven at a sufficient speed with low power consumption, and provides a vibration wave drive device and an electronical device each using the vibrator. To that end, the vibrator according to the present invention includes a piezoelectric element including a piezoelectric material and electrodes, and an elastic body, wherein a Pb component contained in the piezoelectric material is less than 1000 ppm, and a resonance frequency fA in a vibration mode A and a resonance frequency fB in a vibration mode B satisfy a relation of an absolute value of (fB?fA)>2 (kHz), the vibration mode A and the vibration mode B generating vibration waves in the elastic body with wave fronts of the vibration waves intersecting each other.
    Type: Application
    Filed: December 21, 2017
    Publication date: October 31, 2019
    Inventors: Tatsuo Furuta, Takayuki Watanabe, Miki Ueda, Shinya Koyama, Makoto Kubota, Takanori Matsuda, Akira Uebayashi, Jumpei Hayashi, Hitoshi Nishitani
  • Patent number: 10451833
    Abstract: A vibrator and an ultrasonic motor can exhibit a sufficient drive speed even when using lead-free piezoelectric ceramics. The ultrasonic motor includes an annular vibrator and an annular moving member arranged so as to be brought into pressure-contact with the vibrator. The vibrator includes an annular vibrating plate and an annular piezoelectric element. The piezoelectric element includes an annular piezoelectric ceramic piece, a common electrode arranged on one surface of the piezoelectric ceramic piece, and a plurality of electrodes arranged on the other surface of the piezoelectric ceramic piece. The piezoelectric ceramic piece contains lead in a content of less than 1,000 ppm. The plurality of electrodes include two drive phase electrodes, at least one non-drive phase electrode, and at least one detection phase electrode.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: October 22, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Jumpei Hayashi, Akira Uebayashi, Tatsuo Furuta, Hidenori Tanaka, Shinya Koyama, Makoto Kubota
  • Publication number: 20190300091
    Abstract: A saddled vehicle includes: a vehicle body frame; an internal combustion engine supported at a lower portion of the vehicle body frame; a fuel tank supported at an upper portion of the vehicle body frame; and a canister. The canister is disposed around the fuel tank at a position lower than a seating portion of an occupant seat. A removable hermetic sealing cap or a one-way valve that prevents entry of rainwater from an outside is included in a drain pipe disposed at a lower portion of the canister. Accordingly, entry of rainwater into the canister is prevented with a simple structure.
    Type: Application
    Filed: March 25, 2019
    Publication date: October 3, 2019
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Shinya KOYAMA, Akinobu MASUNAGA, Yoshiaki NAKASHIMA, Makoto HOTOZUKA
  • Patent number: 10424721
    Abstract: A lead-free piezoelectric element that stably operates in a wide operating temperature range contains a lead-free piezoelectric material. The piezoelectric element includes a first electrode, a second electrode, and a piezoelectric material that includes a perovskite-type metal oxide represented by (Ba1-xCax)a(Ti1-yZry)O3 (1.00?a?1.01, 0.02?x?0.30, 0.020?y?0.095, and y?x) as a main component and manganese incorporated in the perovskite-type metal oxide. The manganese content relative to 100 parts by weight of the perovskite-type metal oxide is 0.02 parts by weight or more and 0.40 parts by weight or less on a metal basis.
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: September 24, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Jumpei Hayashi, Kenichi Takeda, Shinya Koyama, Kenichi Akashi, Tatsuo Furuta