Patents by Inventor Kenji Kubota

Kenji 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).

  • Patent number: 11973453
    Abstract: A first actuator and a second actuator each have a plurality of control calculation units provided redundantly and a plurality of motor drive units provided redundantly. In the first and the second actuators, the control calculation units of the systems paired with each other transmit and receive information to and from each other by a communication between the actuators. When a failure occurs in any system in either of the two actuators, or when a failure occurs in a communication between actuators in either system, the control calculation unit of each actuator of the system in which the failure occurred stops the motor drive control. Then, the motor drive control is continued by the control calculation unit of the normal system in both actuators.
    Type: Grant
    Filed: April 26, 2022
    Date of Patent: April 30, 2024
    Assignees: DENSO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA, JTEKT CORPORATION
    Inventors: Hiroki Tomizawa, Masaharu Yamashita, Kenji Shibata, Yosuke Yamashita, Shoji Kubota, Yugo Nagashima, Yuji Fujita, Kenichi Abe
  • Publication number: 20240110121
    Abstract: A lubricating oil composition containing a base oil (A), a molybdenum-based friction modifier (B), a metal-based detergent (C), and a dispersant (D), in which the dispersant (D) contains a non-boron-modified polyisobutenyl succinic bisimide (D1). The IR spectrum of the non-boron-modified polyisobutenyl succinic bisimide (D1) is determined by an FT-IR method, having a ratio [Abs (1705 cm?1)/Abs (1390 cm?1)] of a peak intensity Abs (1705 cm?1) at 1705 cm?1 to a peak intensity Abs (1390 cm?1) at 1390 cm?1 is 7.5 or less. A content of the non-boron-modified polyisobutenyl succinic bisimide (D1) is 50 mass % or more based on a total amount of the dispersant (D), and contains a kinematic viscosity at 100° C. is 9.3 mm2/s or less. The lubricating oil composition has an excellent effect of reducing a friction coefficient while containing a molybdenum-based friction modifier and a succinimide compound.
    Type: Application
    Filed: February 4, 2022
    Publication date: April 4, 2024
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Kenji SUNAHARA, Jun YAMASHITA, Masaya KUBOTA, Shoichiro FUJITA
  • Publication number: 20240101924
    Abstract: A lubricating oil composition may contain a base oil (A) and a dispersant-type viscosity index improver (B), in which the nitrogen atom content based on the solid content of the dispersant-type viscosity index improver (B) is 0.50 to 1.50% by mass, and the weight-average molecular weight (Mw) thereof is 100,000 or more, and the content in terms of the solid content based on the total amount of the composition of the dispersant-type viscosity index improver (B) is more than 0.05% by mass and less than 5.0% by mass. The lubricating oil composition may exert excellent wear resistance in a state contaminated with soot.
    Type: Application
    Filed: March 4, 2022
    Publication date: March 28, 2024
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Shoichiro FUJITA, Kenji SUNAHARA, Tsukasa YAMAGISHI, Masaya KUBOTA
  • Patent number: 11938503
    Abstract: An ultrafine bubble (UFB)-containing liquid manufacturing apparatus includes a liquid ejecting unit having a thermal energy generating element, a flow path for leading liquid to the thermal energy generating element, a driving unit configured to drive the thermal energy generating element, and an ejection opening. The UFB-containing liquid manufacturing apparatus also includes a collecting unit configured to collect liquid ejected from the ejection opening. The driving unit drives the thermal energy generating element to cause film boiling in liquid led to the flow path and causes liquid containing ultrafine bubbles generated by the film boiling to be ejected from the ejection opening.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: March 26, 2024
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kenji Takahashi, Masahiko Kubota, Ikuo Nakazawa, Akitoshi Yamada, Nobuhisa Tanahashi
  • Patent number: 11926216
    Abstract: A vibration damping device including a vibration-damping device main unit inserted into a mounting space of a bracket from a lateral side and securely supported by the bracket. The bracket includes engaging pieces on respective opposed inside faces of the mounting space, and engaging action of the engaging pieces with respect to respective detent engaging faces formed on a fixture member of the vibration-damping device main unit prevents the vibration-damping device main unit from becoming dislodged from the mounting space of the bracket. Opposed walls of the mounting space are each penetrated by an aperture window, and inspection flat surfaces are separately provided to an outside surface of each engaging piece visible from an outside through the aperture window and a corresponding external side surface of the bracket that is off the aperture window. The inspection flat surfaces are parallel to each other.
    Type: Grant
    Filed: December 23, 2021
    Date of Patent: March 12, 2024
    Assignees: SUMITOMO RIKO COMPANY LIMITED, HONDA MOTOR CO., LTD.
    Inventors: Kenji Oki, Shingo Tanaka, Hiroki Kondo, Yusuke Arai, Kozo Kubota
  • Patent number: 11901659
    Abstract: Providing a terminal material for connectors provided with a base material in which at least a surface layer is made of copper or copper alloy, a nickel-plating layer made of nickel or nickel alloy coating a surface of the base material, and a silver-nickel alloy plating layer formed on at least a part of the nickel-plating layer, the silver-nickel alloy plating layer having a film thickness of 0.5 ?m to 20 ?m inclusive, a nickel content of 0.03 at % to 1.20 at % inclusive, and an average crystal grain size of 10 nm to 150 nm inclusive, to improve abrasion resistance and heat resistance.
    Type: Grant
    Filed: August 3, 2020
    Date of Patent: February 13, 2024
    Assignee: MITSUBISHI MATERIALS CORPORATION
    Inventors: Yoshie Tarutani, Kenji Kubota
  • Publication number: 20230411266
    Abstract: A heatsink-integrated insulating circuit board includes a heat sink including a radiating fin, an insulating resin layer formed on a top plate part of the heat sink, and a circuit layer arranged on one surface of the insulating resin layer. An angle ? formed between an end of the metal piece and a surface of the insulating resin layer is set to be 70° or more and 110° or less. Root-mean-square heights Sq1 and Rq1 in bonding surfaces to the insulating resin layer in the top plate part of the heat sink and the metal piece, and root-mean-square heights Sq2 and Rq1 in regions other than the bonding surfaces to the insulating resin layer in the top plate part of the heat sink and the metal piece have a relationship of Sq1>Sq2 or Rq1>Rq2.
    Type: Application
    Filed: November 25, 2021
    Publication date: December 21, 2023
    Applicant: MITSUBISHI MATERIALS CORPORATION
    Inventors: Yoshiaki Sakaniwa, Toyo Ohashi, Marina Sakamaki, Kenji Kubota
  • Patent number: 11781234
    Abstract: A copper alloy plate including 0.3 mass % or more and 1.2 mass % or less of Mg, 0.001 mass % or more and 0.2 mass % or less of P, and the balance Cu with inevitable impurities in a thickness center portion in a plate thickness direction; Mg concentration on a plate surface is 30% or less of bulk Mg concentration at the thickness center portion; a surface layer part having a depth from the plate surface to where it is 90% of the bulk Mg concentration is provided; and in the surface layer part, the Mg concentration increases from the plate surface toward the thickness center portion with a concentration gradient 1.8 mass %/?m or more and 50 mass %/?m or less.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: October 10, 2023
    Assignee: MITSUBISHI MATERIALS CORPORATION
    Inventors: Naoki Miyashima, Kazunari Maki, Shinichi Funaki, Kenji Kubota
  • Publication number: 20230299548
    Abstract: A base material at least a surface is made of copper or copper alloy and a silver-nickel-potassium alloy plating layer formed on at least a part of the base material are provided; the silver-nickel-potassium alloy plating layer has a film thickness of 0.5 ?m or more and 20.0 ?m or less, a nickel content of 0.02% by mass or more and 0.60% by mass or less, and a potassium content of 0.03% by mass or more and 1.00% by mass or less; and an average crystal grain size of the silver-nickel-potassium alloy plating layer is preferably 10 nm or more and 150 nm or less.
    Type: Application
    Filed: February 24, 2021
    Publication date: September 21, 2023
    Applicant: MITSUBISHI MATERIALS CORPORATION
    Inventors: Yoshie Tarutani, Naoki Katou, Kenji Kubota
  • Patent number: 11761109
    Abstract: A terminal material for a connector provided with a base material in which at least a surface layer is made of copper or copper alloy, a nickel-plating layer made of nickel or nickel alloy and formed on a surface of the base material, a silver-nickel alloy plating layer made of silver-nickel alloy and formed on at least a part of the nickel-plating layer, and a silver-plating layer made of silver and formed on the silver-nickel alloy plating layer; the silver-nickel alloy plating layer has a film thickness 0.05 µm or more and less than 0.50 µm and a nickel content 0.03 at% or more and 1.00 at% or less.
    Type: Grant
    Filed: January 28, 2021
    Date of Patent: September 19, 2023
    Assignee: MITSUBISHI MATERIALS CORPORATION
    Inventors: Yoshie Tarutani, Kenji Kubota, Naoki Katou
  • Patent number: 11753733
    Abstract: In a method for producing high-purity electrolytic copper, a first additive (A) containing an aromatic ring of a hydrophobic group and a polyoxyalkylene group of a hydrophilic group, a second additive (B) formed of polyvinyl alcohols, and a third additive (C) formed of tetrazoles are added to a copper electrolyte, copper electrolysis is performed by controlling each concentration of the first additive (A), the second additive (B), and the third additive (C), a current density and a bath temperature, and accordingly, electrolytic copper in which a concentration of Ag is less than 0.2 mass ppm, a concentration of S is less than 0.07 mass ppm, a concentration of all impurities is less than 0.2 mass ppm, and an area ratio of crystal grains having an average crystal grain misorientation (referred to as a GOS value) exceeding 2.5° is 10% or less is obtained.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: September 12, 2023
    Assignee: MITSUBISHI MATERIALS CORPORATION
    Inventors: Yoshie Tarutani, Kenji Kubota, Kiyotaka Nakaya, Isao Arai
  • Publication number: 20230257897
    Abstract: A corrosion-resistant terminal material for an aluminum core wire having a good adhesion of plating and a high effect of corrosion resistant, having a base material in which at least a surface is made of copper or copper alloy and a corrosion-resistant film formed on at least a part of the base material; the corrosion film having an intermediate alloy layer made of tin alloy, a zinc layer made of zinc or zinc alloy formed on the intermediate alloy layer, and a tin-zinc alloy layer made of tin alloy containing zinc and formed on the zinc layer; and a tin content in the intermediate alloy layer is 90 at % or less.
    Type: Application
    Filed: June 16, 2021
    Publication date: August 17, 2023
    Applicant: MITSUBISHI MATERIALS CORPORATION
    Inventors: Takashi Tamagawa, Kenji Kubota
  • Patent number: 11721923
    Abstract: Providing a terminal material for connectors provided with a base material in which at least a surface layer is made of copper or copper alloy, a nickel-plating layer made of nickel or nickel alloy coating a surface of the base material, and a silver-nickel alloy plating layer formed on at least a part of the nickel-plating layer, the silver-nickel alloy plating layer having a film thickness of 0.5 ?m to 20 ?m inclusive, a nickel content of 0.03 at % to 1.20 at % inclusive, and an average crystal grain size of 10 nm to 150 nm inclusive, to improve abrasion resistance and heat resistance.
    Type: Grant
    Filed: August 3, 2020
    Date of Patent: August 8, 2023
    Assignee: MITSUBISHI MATERIALS CORPORATION
    Inventors: Yoshie Tarutani, Kenji Kubota
  • Patent number: 11661667
    Abstract: An anti-corrosion terminal material including a base material made of copper or copper alloy and a coating film laminated on the base material: the coating film includes: a first coating film, provided with a zinc layer made of zinc alloy and a tin layer made of tin or tin alloy which are laminated in this order, and formed at a planned core contact part; and a second coating film including the tin layer but not comprising the zinc layer, which is provided at a planned contact part being a contact part when the terminal is formed: and the zinc layer has a thickness not less than 0.1 ?m and not more than 5.0 ?m and zinc concentration not less than 30% by mass and not more than 95% by mass, and has any one or more of nickel, iron, manganese, molybdenum, cobalt, cadmium, lead and tin as a balance.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: May 30, 2023
    Assignee: MITSUBISHI MATERIALS CORPORATION
    Inventors: Kenji Kubota, Yoshie Tarutani, Takashi Tamagawa, Kiyotaka Nakaya
  • Publication number: 20230111976
    Abstract: A terminal material for a connector provided with a base material in which at least a surface layer is made of copper or copper alloy, a nickel-plating layer made of nickel or nickel alloy and formed on a surface of the base material, a silver-nickel alloy plating layer made of silver-nickel alloy and formed on at least a part of the nickel-plating layer, and a silver-plating layer made of silver and formed on the silver-nickel alloy plating layer; the silver-nickel alloy plating layer has a film thickness 0.05 µm or more and less than 0.50 µm and a nickel content 0.03 at% or more and 1.00 at% or less.
    Type: Application
    Filed: January 28, 2021
    Publication date: April 13, 2023
    Applicant: MITSUBISHI MATERIALS CORPORATION
    Inventors: Yoshie Tarutani, Kenji Kubota, Naoki Katou
  • Patent number: 11530490
    Abstract: In a terminal material with a silver coating film including a silver layer on a surface, a terminal and a terminal material having high reliability are easily manufactured with low cost without a heat treatment. A base material formed of copper or a copper alloy; and nickel layer, an intermediate layer, and a silver layer laminated on the base material in this order are included, the nickel layer has a thickness of 0.05 ?m to 5.00 ?m and is formed of nickel or a nickel alloy, the intermediate layer has a thickness of 0.02 ?m to 1.00 ?m and is an alloy layer containing silver (Ag) and a substance X, and the substance X includes one or more kinds of tin, bismuth, gallium, indium, and germanium.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: December 20, 2022
    Assignee: MITSUBISHI MATERIALS CORPORATION
    Inventors: Kenji Kubota, Tooru Nishimura, Takashi Tamagawa, Kiyotaka Nakaya
  • Patent number: 11453953
    Abstract: The present invention provides a high-purity electrolytic copper 10 having a Cu purity excluding gas components (O, F, S, C, and Cl) is 99.9999 mass % or more, a content of S is 0.1 mass ppm or less, and an area ratio of crystals having a (101)±10° orientation is less than 40%, when crystal orientation is measured by electron backscatter diffraction in a cross section along a thickness direction.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: September 27, 2022
    Assignee: MITSUBISHI MATERIALS CORPORATION
    Inventors: Yoshie Tarutani, Kenji Kubota, Kiyotaka Nakaya, Isao Arai
  • Publication number: 20220294140
    Abstract: Providing a terminal material for connectors provided with a base material in which at least a surface layer is made of copper or copper alloy, a nickel-plating layer made of nickel or nickel alloy coating a surface of the base material, and a silver-nickel alloy plating layer formed on at least a part of the nickel-plating layer, the silver-nickel alloy plating layer having a film thickness of 0.5 ?m to 20 ?m inclusive, a nickel content of 0.03 at % to 1.20 at % inclusive, and an average crystal grain size of 10 nm to 150 nm inclusive, to improve abrasion resistance and heat resistance.
    Type: Application
    Filed: August 3, 2020
    Publication date: September 15, 2022
    Applicant: MITSUBISHI MATERIALS CORPORATION
    Inventors: Yoshie Tarutani, Kenji Kubota
  • Publication number: 20220081738
    Abstract: A copper alloy plate including 0.3 mass % or more and 1.2 mass % or less of Mg, 0.001 mass % or more and 0.2 mass % or less of P, and the balance Cu with inevitable impurities in a thickness center portion in a plate thickness direction; Mg concentration on a plate surface is 30% or less of bulk Mg concentration at the thickness center portion; a surface layer part having a depth from the plate surface to where it is 90% of the bulk Mg concentration is provided; and in the surface layer part, the Mg concentration increases from the plate surface toward the thickness center portion with a concentration gradient 1.8 mass %/?m or more and 50 mass %/?m or less.
    Type: Application
    Filed: December 18, 2019
    Publication date: March 17, 2022
    Applicant: MITSUBISHI MATERIALS CORPORATION
    Inventors: Naoki Miyashima, Kazunari Maki, Shinichi Funaki, Kenji Kubota
  • Publication number: 20220085526
    Abstract: Providing an anti-corrosion terminal material having high corrosion resistance effect and good adhesiveness of a film. A first film is formed on at least a part of a base material in which at least a surface is made of copper or copper alloy; in the first film, a zinc layer made of zinc or zinc alloy is formed on a mixed layer in which a copper-tin alloy region made of copper tin alloy and a tin region made of tin or tin alloy other than copper tin alloy are mixed; the zinc layer is in contact with both the copper-tin alloy region and the tin region of the mixed layer; a ratio R1/R2 is 0.05 or more and 2.5 or less where a length in contact with the copper-tin alloy region in a cross section along a thickness direction is R1 (?m) and a length in contact with the tin layer is R2 (?m).
    Type: Application
    Filed: December 27, 2019
    Publication date: March 17, 2022
    Applicant: MITSUBISHI MATERIALS CORPORATION
    Inventors: Kenji Kubota, Takashi Tamagawa, Toru Nishimura, Yoshie Tarutani, Kiyotaka Nakaya