Patents by Inventor Takashi Matsui

Takashi Matsui 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).

  • Positive-charging toner
    Patent number: 10732529
    Abstract: Provided is a positive-charging toner having a toner particle that contains a binder resin, the binder resin contains a polymer A having a first monomer unit derived from a first polymerizable monomer, and a second monomer unit derived from a second polymerizable monomer, the first polymerizable monomer is at least one selected from the group consisting of (meth)acrylic acid esters having a C18 to C36 alkyl group, the content of the first monomer unit in the polymer A is 5.0 to 60.0 mol % and the content of the second monomer unit is 20.0 to 95.0 mol %, SP11 of the first monomer unit and SP21 of the second monomer unit satisfy 3.00?(SP21?SP11)?25.00, and the work function of the toner is 5.0 to 5.4 V.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: August 4, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Daisuke Yoshiba, Tomoya Nagaoka, Takashi Matsui
  • Toner and method for producing toner
    Patent number: 10732530
    Abstract: Provided is a toner has a toner particle containing a binder resin and is characterized in that the binder resin contains a polymer A, which is a polymer of a composition containing a first polymerizable monomer, a second polymerizable monomer and a crosslinking agent, the first polymerizable monomer is at least one monomer selected from the group consisting of (meth)acrylic acid esters having an alkyl group with 18 to 36 carbon atoms, the crosslinking agent has two or more polymerizable double bonds, a content of the first polymerizable monomer in the composition is 5.0 to 60.0 mol %, a content of the second polymerizable monomer is 20.0 to 95.0 mol %, and when the SP values of the first polymerizable monomer, the second polymerizable monomer and the crosslinking agent are denoted by SP12, SP22 and SPC2, respectively, the formulae 0.60?(SP22?SP12)?15.00 and SP12<SPC2<(SP22+3.00) are satisfied.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: August 4, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Takashi Matsui, Kenta Kamikura, Kenji Aoki, Masao Suzuki, Tsutomu Shimano, Reo Tagawa
  • Vehicle seat
    Patent number: 10703232
    Abstract: Provided is a vehicle seat (1) capable of facilitating the mounting of a cover (30). The cover (30) of a seat cushion (2) is configured such that a upper portion cover (31) is disposed on the upper surface side of the seat cushion (2), a front portion cover (33) extends from the front edge of the upper portion cover (31) to the rear surface side of the seat cushion (2), and a rear portion cover (34) extends from the rear edge of the upper portion cover (31) to the rear surface side of the seat cushion (2). A first link portion (44) which detachably couples the rear edge of the front portion cover (33) and the front edge of the rear portion cover (34) to each other contacts a lower portion pad (22) of a cushion pad (20).
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: July 7, 2020
    Assignee: TACHI-S CO., LTD.
    Inventors: Takashi Matsui, Takashi Yokoyama
  • OPTICAL TRANSCEIVER
    Publication number: 20200195350
    Abstract: An optical transceiver comprises an optical port, paired transmitter optical sub-assemblies (TOSAs), paired receiver optical sub-assemblies (ROSAs) and a printed circuit board (PCB) including an electrical circuit electrically connected to the paired TOSAs and the paired ROSAs. And the optical transceiver comprises a housing configured to house the optical port, the paired ROSAs, the paired TOSAs, and the PCB, so that the paired ROSAs are arranged between the optical port and the PCB in the first direction and the paired TOSAs are arranged between the paired ROSAs and the PCB in the first direction.
    Type: Application
    Filed: December 13, 2019
    Publication date: June 18, 2020
    Applicant: Sumitomo Electric Industries, Ltd.
    Inventors: Takashi Matsui, Hiromi Kurashima
  • OIL-IN-WATER EMULSION COSMETIC
    Publication number: 20200155440
    Abstract: The present invention has the purpose of providing an oil-in-water emulsion cosmetic that contains a high quantity of an ultraviolet absorbing agent and an ultraviolet scattering agent in the oil phase and achieves a high SPF, while simultaneously having a Distinctive fresh feeling in use when applied to the skin. The present invention provides an oil-in-water emulsion cosmetic characterized by comprising (A) 0.05 to 1% by mass of a hydrophobically modified alkyl cellulose; (B) 5 to 40% by mass of an oil component; (C) 2.5 to 30% by mass of an ultraviolet scattering agent having a hydrophobic surface; and (D) a water phase thickener having low salinity tolerance; wherein the (C) ultraviolet scattering agent is dispersed in the oil phase.
    Type: Application
    Filed: January 27, 2020
    Publication date: May 21, 2020
    Applicant: SHISEIDO COMPANY, LTD.
    Inventors: MAYURI TASHIRO, YUKO NAGARE, TAKASHI MATSUI
  • Toner and method for producing toner
    Patent number: 10656545
    Abstract: A toner has a toner particle including a binder resin, the binder resin includes a polymer A, the polymer A contains a first monomer unit derived from a first polymerizable monomer and a second monomer unit derived from a second polymerizable monomer, the first polymerizable monomer is selected from (meth)acrylic acid esters having an alkyl group having 18 to 36 carbon atoms, the content of the first monomer unit in the polymer A is 5.0 mol % to 60.0 mol %, the content of the second monomer unit in the polymer A is 20.0 mol % to 95.0 mol %, the SP value of the first monomer unit and the SP value of the second monomer unit satisfy a predetermined relationship, the polymer A includes a predetermined polyvalent metal, and the content of the polyvalent metal is 25 ppm to 500 ppm.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: May 19, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kentaro Kamae, Kazuhisa Shirayama, Takeshi Hashimoto, Hayato Ida, Takashi Matsui
  • OPTICAL FIBER AND OPTICAL TRANSMISSION SYSTEM
    Publication number: 20200116925
    Abstract: An optical fiber includes a core, a first clad that is provided on an outer circumferential portion of the core and has a refractive index lower than that of the core, and a second clad that is provided on an outer circumferential portion of the first clad and has a refractive index lower than that of the first clad. In the optical fiber, a mode field diameter at a wavelength of 1.55 ?m is equal to or greater than 11.5 ?m, a cutoff wavelength is equal to or less than 1.53 ?m, a bending loss at a bending radius of 30 mm and a wavelength of 1.625 ?m is equal to or less than 2.0 dB/100 turns, and a delay time of transmission light per unit length at a wavelength of 1.55 ?m is equal to or less than 4.876 ?s/km.
    Type: Application
    Filed: July 3, 2018
    Publication date: April 16, 2020
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Yuto SAGAE, Kazuhide NAKAJIMA, Takashi MATSUI
  • Alignment apparatus and alignment method
    Patent number: 10620372
    Abstract: An alignment apparatus that can efficiently align an optical fiber, and an alignment method will be provided. According to the embodiments, the alignment apparatus that aligns an optical fiber comprises an acquisition unit, a calculation unit, and a rotation processing unit. The acquisition unit acquires one or more side images of the optical fiber. The calculation unit calculates correlation coefficients between the luminances of the one or more side images and those of one or more reference side images. The rotation processing unit rotates the optical fiber in the axis direction of the optical fiber so that the correlation coefficients peak.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: April 14, 2020
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takashi Matsui, Kazuhide Nakajima, Taiji Sakamoto, Koutaro Saito
  • Optical connector
    Patent number: 10585235
    Abstract: An optical connector is provided which includes at least one multi-core block fixing and holding a plurality of multi-core optical fibers in a state where a position in a direction orthogonal to an optical axis of each multi-core optical fiber and a rotation angle around the optical axis are in a predetermined state, and a ferrule including an accommodating portion accommodating the multi-core block.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: March 10, 2020
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Taiji Sakamoto, Takashi Matsui, Kazuhide Nakajima, Kotaro Saitoh
  • Photonic crystal fiber and high-power light transmission system
    Patent number: 10545333
    Abstract: A photonic crystal fiber according to the present invention has a plurality of holes arranged in the optical fiber along a longitudinal direction, in which the holes are arranged such that, in a cross section, a hole ratio which is an area of the holes per unit area is larger in a central side than in an outer side in a portion corresponding to a cladding and that a wide core area can be obtained while the number of modes that can be propagated is limited to several. Moreover, in a high-power optical transmission system according to the present invention, the amount of axis misalignment between the central axis of a laser oscillator and the central axis of the photonic crystal fiber is less than or equal to a certain amount.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: January 28, 2020
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takashi Matsui, Kazuhide Nakajima, Kyozo Tsujikawa, Fumihiko Yamamoto
  • VEHICLE REAR STRUCTURE
    Publication number: 20200023724
    Abstract: A vehicle rear structure includes a battery outer case, a side frame provided in a side portion of the battery outer case and extending forward from a rear side of the battery outer case, a rear vehicle frame member provided behind the battery outer case and inwardly from an end of a vehicle body so as to extend in the vehicle front-rear direction, and a front vehicle frame member provided in front of the battery outer case so as to extend in the vehicle front-rear direction and being connected to a front end portion of the side frame. The rear vehicle frame member is connected to a rear end portion of the side frame.
    Type: Application
    Filed: June 20, 2019
    Publication date: January 23, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tetsuo NURUKI, Kohei HISADA, Kazuki OTAKE, Takashi MATSUI
  • Photonic crystal fiber and high-power light transmission system
    Patent number: 10539784
    Abstract: A photonic crystal fiber according to the present invention has a plurality of holes arranged in the optical fiber along a longitudinal direction, in which the holes are arranged such that, in a cross section, a hole ratio which is an area of the holes per unit area is larger in a central side than in an outer side in a portion corresponding to a cladding and that a wide core area can be obtained while the number of modes that can be propagated is limited to several. Moreover, in a high-power optical transmission system according to the present invention, the amount of axis misalignment between the central axis of a laser oscillator and the central axis of the photonic crystal fiber is less than or equal to a certain amount.
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: January 21, 2020
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takashi Matsui, Kazuhide Nakajima, Kyozo Tsujikawa, Fumihiko Yamamoto
  • Optical transceiver including heat dissipation structure
    Patent number: 10517166
    Abstract: An optical transceiver according to one example comprises: a housing having an inner surface therein; a first printed circuit board on which a CDR, which generates heat by consuming electric power, is mounted; a second printed circuit board arranged between the inner surface and the first printed circuit board; a protection member arranged to surround the periphery of the CDR in parallel with the inner surface; a thermal conductive gel in contact with each of the CDR, the protection member and the second printed circuit board; a heat dissipation sheet arranged between the second printed circuit board and the inner surface; and a heat dissipation sheet arranged between the first printed circuit board and the inner surface, wherein the protection member has an opening in contact with a part of the thermal conductive gel.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: December 24, 2019
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventor: Takashi Matsui
  • TONER AND METHOD FOR PRODUCING TONER
    Publication number: 20190384198
    Abstract: Provided is a toner has a toner particle containing a binder resin and is characterized in that the binder resin contains a polymer A, which is a polymer of a composition containing a first polymerizable monomer, a second polymerizable monomer and a crosslinking agent, the first polymerizable monomer is at least one monomer selected from the group consisting of (meth)acrylic acid esters having an alkyl group with 18 to 36 carbon atoms, the crosslinking agent has two or more polymerizable double bonds, a content of the first polymerizable monomer in the composition is 5.0 to 60.0 mol %, a content of the second polymerizable monomer is 20.0 to 95.0 mol %, and when the SP values of the first polymerizable monomer, the second polymerizable monomer and the crosslinking agent are denoted by SP12, SP22 and SPC2, respectively, the formulae 0.60?(SP22?SP12)?15.00 and SP12<SPC2<(SP22+3.00) are satisfied.
    Type: Application
    Filed: June 12, 2019
    Publication date: December 19, 2019
    Inventors: Takashi Matsui, Kenta Kamikura, Kenji Aoki, Masao Suzuki, Tsutomu Shimano, Reo Tagawa
  • POSITIVE-CHARGING TONER
    Publication number: 20190384194
    Abstract: Provided is a positive-charging toner having a toner particle that contains a binder resin, the binder resin contains a polymer A having a first monomer unit derived from a first polymerizable monomer, and a second monomer unit derived from a second polymerizable monomer, the first polymerizable monomer is at least one selected from the group consisting of (meth)acrylic acid esters having a C18 to C36 alkyl group, the content of the first monomer unit in the polymer A is 5.0 to 60.0 mol % and the content of the second monomer unit is 20.0 to 95.0 mol %, SP11 of the first monomer unit and SP21 of the second monomer unit satisfy 3.00?(SP21?SP11)?25.00, and the work function of the toner is 5.0 to 5.4 V.
    Type: Application
    Filed: June 12, 2019
    Publication date: December 19, 2019
    Inventors: Daisuke Yoshiba, Tomoya Nagaoka, Takashi Matsui
  • TWO-COMPONENT DEVELOPER
    Publication number: 20190384202
    Abstract: Provided is a two-component developer has a toner including a toner particle including a binder resin, and a magnetic carrier, wherein the binder resin includes a polymer A having a first monomer unit derived from a first polymerizable monomer, and a second monomer unit derived from a second polymerizable monomer different from the first polymerizable monomer, the first polymerizable monomer is a specific (meth)acrylic acid ester, a content and an SP value of the first and second monomer units in the polymer A fall within respective specific ranges, the magnetic carrier has a magnetic core and a coating resin of the surface of the magnetic core, the coating resin includes a polymer B having monomer units (a) and (b), each SP value of the monomer units (a) and (b) is a specific value.
    Type: Application
    Filed: June 12, 2019
    Publication date: December 19, 2019
    Inventors: Kazuhisa Shirayama, Hayato Ida, Takeshi Hashimoto, Kentaro Kamae, Takashi Matsui
  • TONER
    Publication number: 20190384197
    Abstract: A toner, including a toner particle that contains a binder resin and a release agent, wherein the binder resin contains a polymer A, the polymer A including a first monomer unit derived from a first polymerizable monomer and a second monomer unit derived from a second polymerizable monomer different from the first polymerizable monomer; the first polymerizable monomer is selected from (meth)acrylic acid esters having a C18-36 alkyl group; the toner has a first monomer unit content and a second monomer unit content in the polymer A which are within specific ranges, and assuming that an SP value of the first monomer unit is taken as SP11 and an SP value of the second monomer unit is taken as SP21, the formula (1) below is satisfied, and the molecular weight of the release agent is at least 1,000. 3.00?(SP21?SP11)?25.
    Type: Application
    Filed: June 12, 2019
    Publication date: December 19, 2019
    Inventors: Kenji Aoki, Takashi Matsui, Kenta Kamikura, Masao Suzuki, Tsutomu Shimano, Reo Tagawa
  • TONER
    Publication number: 20190384200
    Abstract: The toner has a toner particle in which a toner core containing a binder resin is coated with a shell layer, wherein the binder resin contains a polymer A that has a first monomer unit and a second monomer unit; the first unit is derived from (meth)acrylate ester having an alkyl group having 18 to 36 carbon atoms; the content of the first monomer unit in the polymer is 5.0 to 60.0 mol %; the content of the second monomer unit is 20.0 to 95.0 mol %; the following formula (1) is satisfied when the SP value of the first unit is denoted by SP11 and the SP value of the second unit is denoted by SP21; and the toner core is coated with a highly uniform shell over at least 90% of the circumference of the toner cross section; 3.00?(SP21?SP11)?25.00??(1).
    Type: Application
    Filed: June 12, 2019
    Publication date: December 19, 2019
    Inventors: Kenta Kamikura, Takashi Matsui, Kenji Aoki, Masao Suzuki, Tsutomu Shimano, Reo Tagawa
  • TONER AND TWO-COMPONENT DEVELOPER
    Publication number: 20190384193
    Abstract: A toner having an inorganic fine particle and a toner particle containing a binder resin, wherein the binder resin contains a polymer A having a first monomer unit derived from a first polymerizable monomer and a second monomer unit derived from a second polymerizable monomer that is different from the first polymerizable monomer, the first polymerizable monomer is selected from the (meth)acrylic acid esters each having a C18-36 alkyl group, the content of the first monomer unit in the polymer A is within a specific range, the SP value of the first monomer unit and the SP value of the second monomer unit are in a specific relationship to one another, the inorganic fine particle is surface treated with a compound having an alkyl group, and the volume resistivity of the inorganic fine particle is within a specific range.
    Type: Application
    Filed: June 12, 2019
    Publication date: December 19, 2019
    Inventors: Takeshi Hashimoto, Kentaro Kamae, Kazuhisa Shirayama, Hayato Ida, Takashi Matsui
  • TONER AND METHOD FOR PRODUCING TONER
    Publication number: 20190384196
    Abstract: A toner has a toner particle including a binder resin, the binder resin includes a polymer A, the polymer A contains a first monomer unit derived from a first polymerizable monomer and a second monomer unit derived from a second polymerizable monomer, the first polymerizable monomer is selected from (meth)acrylic acid esters having an alkyl group having 18 to 36 carbon atoms, the content of the first monomer unit in the polymer A is 5.0 mol % to 60.0 mol %, the content of the second monomer unit in the polymer A is 20.0 mol % to 95.0 mol %, the SP value of the first monomer unit and the SP value of the second monomer unit satisfy a predetermined relationship, the polymer A includes a predetermined polyvalent metal, and the content of the polyvalent metal is 25 ppm to 500 ppm.
    Type: Application
    Filed: June 12, 2019
    Publication date: December 19, 2019
    Inventors: Kentaro Kamae, Kazuhisa Shirayama, Takeshi Hashimoto, Hayato Ida, Takashi Matsui