Patents by Inventor Takeshi Kubota

Takeshi Kubota 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: 20230283128
    Abstract: Provided is a rotating electric machine, including: a field magneton; and an armature. In terms of components in a radial direction of the field magneton of magnetic fluxes passing from the field magneton to the armature, a magnetic flux density at a center in an axial direction of the field magneton is lower than a magnetic flux density at an end in the axial direction of the field magneton.
    Type: Application
    Filed: July 29, 2022
    Publication date: September 7, 2023
    Applicant: Mitsubishi Electric Corporation
    Inventors: Kengo KUMAGAI, Shinsuke Kayano, Takeshi Kubota
  • Publication number: 20230213141
    Abstract: A fixing device capable of reducing a burden on an operator when adjusting an inclination of communication equipment is achieved. A fixing device includes: a first jig configured to fix communication equipment; a second jig configured to rotatably support the first jig about a rotation shaft; a ratchet mechanism configured to be capable of switching restraint or permission of rotation of the first jig in one direction with respect to the second jig due to weight of the communication equipment, and permit rotation of the first jig in another direction with respect to the second jig; and a biasing member configured to store biasing force when the first jig rotates in one direction with respect to the second jig due to weight of the communication equipment, and bias rotation of the first jig in another direction with respect to the second jig.
    Type: Application
    Filed: March 9, 2021
    Publication date: July 6, 2023
    Applicant: NEC Platforms, Ltd.
    Inventors: Satoko ONO, Yasuhiro KUBOTA, Takeshi OHASHI
  • Patent number: 11674206
    Abstract: There is provided a sintered friction material for railway vehicles that has excellent frictional properties and wear resistance even in a high speed range of 280 km/hour or more. The sintered friction material for railway vehicles is a green compact sintered material containing, in mass %, Cu: 50.0 to 75.0%, graphite: 5.0 to 15.0%, one or more selected from the group consisting of magnesia, zircon sand, silica, zirconia, mullite, and silicon nitride: 1.5 to 15.0%, one or more selected from the group consisting of W and Mo: 3.0 to 30.0%, and one or more selected from the group consisting of ferrochromium, ferrotungsten, ferromolybdenum, and stainless steel: 2.0 to 20.0%, with the balance being impurities.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: June 13, 2023
    Assignees: NIPPON STEEL CORPORATION, FINE SINTER CO., LTD.
    Inventors: Manabu Kubota, Kazutaka Asabe, Yuki Ichikawa, Takeshi Nakano, Tokitake Okahira, Isao Shimazoe
  • Patent number: 11566303
    Abstract: A non-oriented electrical steel sheet according to one embodiment of the invention has a chemical composition represented by C: 0.0030% or less, Si: 2.00% or less, Al: 1.00% or less, Mn: 0.10% to 2.00%, S: 0.0030% or less, one or more selected from the group consisting of Mg, Ca, Sr, Ba, Nd, Pr, La, Ce, Zn, and Cd: 0.0003% or greater and less than 0.0015% in total, a parameter Q represented by Q=[Si]+2×[Al]?[Mn]: 2.00 or less; Sn: 0.00% to 0.40%, Cu: 0.00% to 1.00%, and a remainder: Fe and impurities, and a parameter R represented by R?(I100+I310+I411+I521)/(I111+I211+I332+I221) is 0.80 or greater.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: January 31, 2023
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Takeshi Kubota, Takeaki Wakisaka, Masafumi Miyazaki, Takashi Morohoshi
  • Patent number: 11469018
    Abstract: A non-oriented electrical steel sheet according to one embodiment of the invention has a chemical composition represented by C: 0.0030% or less, Si: 2.00% or less, Al: 1.00% or less, Mn: 0.10% to 2.00%, S: 0.0030% or less, one or more selected from the group consisting of Mg, Ca, Sr, Ba, Nd, Pr, La, Ce, Zn, and Cd: greater than 0.0100% and not greater than 0.0250% in total, a parameter Q represented by Q=[Si]+2×[Al]?[Mn]: 2.00 or less; Sn: 0.00% to 0.40%, Cu: 0.00% to 1.00%, and a remainder: Fe and impurities, and a parameter R represented by R=(I100+I310+I411+I521)/(I111+I211+I332+I221) is 0.80 or greater.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: October 11, 2022
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Takeshi Kubota, Takeaki Wakisaka, Masafumi Miyazaki, Takashi Morohoshi
  • Patent number: 11459632
    Abstract: A non-oriented electrical steel sheet according to one embodiment of the invention has a chemical composition represented by C: 0.0030% or less, Si: 2.00% or less, Al: 1.00% or less, Mn: 0.10% to 2.00%, S: 0.0030% or less, one or more selected from the group consisting of Mg, Ca, Sr, Ba, Nd, Pr, La, Ce, Zn, and Cd: 0.0015% to 0.0100% in total, a parameter Q represented by Q=[Si]+2×[Al]?[Mn]: 2.00 or less; Sn: 0.00% to 0.40%, Cu: 0.00% to 1.00%, and a remainder: Fe and impurities, and a parameter R represented by R=(I100+I310+I411+I521)/(I111+I211+I332+I221) is 0.80 or greater.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: October 4, 2022
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Takeshi Kubota, Takeaki Wakisaka, Takashi Morohoshi, Masafumi Miyazaki
  • Publication number: 20220271584
    Abstract: Provided is a rotating electric machine, including a rotor, the rotor including: a rotor core; a first permanent magnet inserted into a first magnet slot; and a second permanent magnet inserted into a second magnet slot. The rotor core includes an inter-pole hole portion formed between the first magnet slot and the second magnet slot. When a circle having a rotation axis as a center and circumscribing an edge portion of each of the first magnet slot and the second magnet slot on the stator side is defined as a first circle, the inter-pole hole portion is arranged on a side opposite to the stator with respect to the first circle, and an edge portion of the inter-pole hole portion on the stator side is formed along the first circle.
    Type: Application
    Filed: November 22, 2021
    Publication date: August 25, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yoshihiro MIYAMA, Takeshi KUBOTA, Kengo KUMAGAI
  • Publication number: 20220186330
    Abstract: The present disclosure has as its object the provision of non-oriented electrical steel sheet excellent in magnetic properties which is free from any drop in magnetic flux density even after stress relief annealing and a method for manufacturing the same. Non-oriented electrical steel sheet having a chemical composition containing C: 0.0030 mass % or less, Si: 2.0 mass % or more and 4.0 mass % or less, Al: 0.010 mass % or more and 3.0 mass % or less, Mn: 0.10 mass % or more and 2.4% mass or less, P: 0.0050 mass % or more and 0.20 mass % or less, S: 0.0030 mass % or less, and one or more elements selected from the group comprising Mg, Ca, Sr, Ba, Ce, La, Nd, Pr, Zn, and Cd: total 0.00050 mass % or more and having a balance of Fe and unavoidable impurities, where, when designating a mass % of Si as [Si], a mass % of Al as [Al], and a mass % of Mn as [Mn], a parameter Q shown by the following formula (1) is 2.0 or more, a random intensity ratio of the {100} orientation is 2.
    Type: Application
    Filed: February 14, 2020
    Publication date: June 16, 2022
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Tesshu MURAKAWA, Hiroshi FUJIMURA, Takeaki WAKISAKA, Takeshi KUBOTA
  • Patent number: 11359217
    Abstract: Provided is a transformant of a microorganism that has improved catechol productivity.
    Type: Grant
    Filed: February 18, 2019
    Date of Patent: June 14, 2022
    Assignee: RESEARCH INSTITUTE OF INNOVATIVE TECHNOLOGY FOR THE EARTH
    Inventors: Masayuki Inui, Kazumi Hiraga, Masako Suda, Takeshi Kubota
  • Patent number: 11214441
    Abstract: An endless belt includes a band-shaped belt main body made of a vulcanized rubber, and a coupling part that is made of a thermoplastic resin and is provided between both end parts of the belt main body, wherein the vulcanized rubber of the both end parts of the belt main body and the thermoplastic resin of the coupling part are chemically bonded to each other.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: January 4, 2022
    Assignee: NITTA CORPORATION
    Inventors: Yoshihiro Konishi, Takeshi Kubota, Akito Oi, Akihiko Kuriya
  • Patent number: 11214751
    Abstract: Provided are: a metalworking oil composition having excellent workability and rust inhibiting performance, which is prepared by blending (A) at least one carboxylate selected from a polyhydric alcohol ester of a monocarboxylic acid and a monohydric alcohol ester of a polycarboxylic acid, (B) a phosphorus-containing compound, and (C) a rust inhibitor, wherein the monocarboxylic acid has 9 or more and 21 or less carbon atoms, and the content of the carboxylate is 0.6% by mass or more based on the total amount of the composition; and a metalworking method using the composition.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: January 4, 2022
    Assignees: IDEMITSU KOSAN CO., LTD., NIPPON STEEL CORPORATION
    Inventors: Naoki Nagase, Hideo Sugii, Keiji Noma, Seikichi Kitabatake, Isao Noguchi, Takeshi Kubota, Shuichi Yamazaki, Eisuke Minematsu
  • Publication number: 20210222211
    Abstract: Provided is a transformant of a microorganism that has improved catechol productivity.
    Type: Application
    Filed: February 18, 2019
    Publication date: July 22, 2021
    Applicant: RESEARCH INSTITUTE OF INNOVATIVE TECHNOLOGY FOR THE EARTH
    Inventors: Masayuki INUI, Kazumi HIRAGA, Masako SUDA, Takeshi KUBOTA
  • Publication number: 20210172036
    Abstract: A non-oriented electrical steel sheet according to one embodiment of the invention has a chemical composition represented by C: 0.0030% or less, Si: 2.00% or less, Al: 1.00% or less, Mn: 0.10% to 2.00%, S: 0.0030% or less, one or more selected from the group consisting of Mg, Ca, Sr, Ba, Nd, Pr, La, Ce, Zn, and Cd: 0.0015% to 0.0100% in total, a parameter Q represented by Q=[Si]+2×[Al]?[Mn]: 2.00 or less; Sn: 0.00% to 0.40%, Cu: 0.00% to 1.00%, and a remainder: Fe and impurities, and a parameter R represented by R=(I100+I310+I411+I521)/(I111+I211+I332+I221) is 0.80 or greater.
    Type: Application
    Filed: February 15, 2019
    Publication date: June 10, 2021
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Takeshi KUBOTA, Takeaki WAKISAKA, Takashi MOROHOSHI, Masafumi MIYAZAKI
  • Patent number: 10995393
    Abstract: When a Si content (mass %) is set to [Si], an Al content (mass %) is set to [Al], and a Mn content (mass %) is set to [Mn], a parameter Q represented by “Q=[Si]+2[Al]?[Mn]” is 2.00 or more, the total mass of S contained in sulfides or oxysulfides of Mg, Ca, Sr, Ba, Ce, La, Nd, Pr, Zn, or Cd is 40% or more of the total mass of S contained in a non-oriented electrical steel sheet, a {100} crystal orientation intensity is 3.0 or more, a thickness is 0.15 mm to 0.30 mm, and an average crystal grain diameter is 65 ?m to 100 ?m.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: May 4, 2021
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Takeshi Kubota, Takashi Morohoshi, Masafumi Miyazaki
  • Patent number: 10988743
    Abstract: Provided is a microorganism that is capable of efficiently producing para-aminobenzoic acid (4-ABA) or a salt thereof, using saccharides as raw materials, and a method for efficiently producing 4-ABA or a salt thereof by using this microorganism. A transformant obtained by introducing, into a coryneform bacterium, a gene that encodes 4-amino-4-deoxychorismate lyase, a gene that encodes a para-aminobenzoate synthase component I, and a gene that encodes a para-aminobenzoate synthase component II, is capable of efficiently producing 4-ABA or a salt thereof from saccharides.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: April 27, 2021
    Assignees: RESEARCH INSTITUTE OF INNOVATIVE TECHNOLOGY FOR THE EARTH, SUMITOMO BAKELITE CO., LTD.
    Inventors: Masayuki Inui, Kazumi Hiraga, Masako Suda, Takeshi Kubota
  • Patent number: 10991494
    Abstract: When a Si content (mass %) is set to [Si], an Al content (mass %) is set to [Al], and a Mn content (mass %) is set to [Mn], a parameter Q represented by “Q=[Si]+2[Al]?[Mn]” is 2.00 or more, the total mass of S contained in sulfides or oxysulfides of Mg, Ca, Sr, Ba, Ce, La, Nd, Pr, Zn, or Cd is 40% or more of the total mass of S contained in a non-oriented electrical steel sheet, a {100} crystal orientation intensity is 3.0 or more, a thickness is 0.15 mm to 0.30 mm, and an average crystal grain diameter is 65 ?m to 100 ?m.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: April 27, 2021
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Takeshi Kubota, Takashi Morohoshi, Masafumi Miyazaki
  • Patent number: 10968503
    Abstract: When a Si content (mass %) is set to [Si], an Al content (mass %) is set to [Al], and a Mn content (mass %) is set to [Mn], a parameter Q represented by “Q=[Si]+2[Al]?[Mn]” is 2.00 or more, the total mass of S contained in sulfides or oxysulfides of Mg, Ca, Sr, Ba, Ce, La, Nd, Pr, Zn, or Cd is 10% or more of the total mass of S contained in a non-oriented electrical steel sheet, a {100} crystal orientation intensity is 3.0 or more, a thickness is 0.15 mm to 0.30 mm, and an average crystal grain diameter is 65 ?m to 100 ?m.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: April 6, 2021
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Takeshi Kubota, Takashi Morohoshi, Masafumi Miyazaki
  • Publication number: 20210062286
    Abstract: A non-oriented electrical steel sheet according to one embodiment of the invention has a chemical composition represented by C: 0.0030% or less, Si: 2.00% or less, Al: 1.00% or less, Mn: 0.10% to 2.00%, S: 0.0030% or less, one or more selected from the group consisting of Mg, Ca, Sr, Ba, Nd, Pr, La, Ce, Zn, and Cd: 0.0003% or greater and less than 0.0015% in total, a parameter Q represented by Q=[Si]+2x[Al]?[Mn]: 2.00 or less; Sn: 0.00% to 0.40%, Cu: 0.00% to 1.00%, and a remainder: Fe and impurities, and a parameter R represented by R?(I100+I310+I411+I521)/(I111+I211+I332+I221) is 0.80 or greater.
    Type: Application
    Filed: February 15, 2019
    Publication date: March 4, 2021
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Takeshi KUBOTA, Takeaki WAKISAKA, Masafumi MIYAZAKI, Takashi MOROHOSHI
  • Patent number: 10852610
    Abstract: An opening insulation film covers a substrate and is in contact with a side surface of a gate electrode. The opening insulation film is provided with a first opening portion having a side surface on the gate electrode. A gate insulation film made of an oxide insulator is on the gate electrode and the opening insulation film. A semiconductor channel film made of an oxide semiconductor is on the gate insulation film and is encompassed by the first opening portion. Source and drain electrodes are on the semiconductor channel film. A source upper-layer electrode and a drain upper-layer electrode both made of an oxide are provided at least on upper surfaces of the source electrode and the drain electrode, respectively. An interlayer insulation film made of an oxide has a portion provided on the source upper-layer electrode and the drain upper-layer electrode and is in contact the semiconductor channel film.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: December 1, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kazunori Inoue, Koji Oda, Takafumi Hashiguchi, Takeshi Kubota
  • Publication number: 20200350104
    Abstract: A non-oriented electrical steel sheet according to one embodiment of the invention has a chemical composition represented by C: 0.0030% or less, Si: 2.00% or less, Al: 1.00% or less, Mn: 0.10% to 2.00%, S: 0.0030% or less, one or more selected from the group consisting of Mg, Ca, Sr, Ba, Nd, Pr, La, Ce, Zn, and Cd: greater than 0.0100% and not greater than 0.0250% in total, a parameter Q represented by Q=[Si]+2×[Al]?[Mn]: 2.00 or less; Sn: 0.00% to 0.40%, Cu: 0.00% to 1.00%, and a remainder: Fe and impurities, and a parameter R represented by R=(I100+I310+I411+I521)/(I111+I211+I332+I221) is 0.80 or greater.
    Type: Application
    Filed: February 15, 2019
    Publication date: November 5, 2020
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Takeshi KUBOTA, Takeaki WAKISAKA, Masafumi MIYAZAKI, Takashi MOROHOSHI