Patents by Inventor Jun Oikawa

Jun Oikawa 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).

  • RUBBER COMPOSITION, FLUORINE-CONTAINING ELASTOMER, AND SEAL MATERIAL
    Publication number: 20230174764
    Abstract: A rubber composition comprising: (a) a crosslinking reactive fluorine-containing rubber; (b) a compound represented by the following formula (b-1): and (c) a compound represented by the following formula (c-1):
    Type: Application
    Filed: May 11, 2021
    Publication date: June 8, 2023
    Applicant: NICHIAS CORPORATION
    Inventors: Tomoya SHIMIZU, Shogo OBARA, Takashi MATSUMURA, Jun OIKAWA, Ryunosuke TERASAKI
  • Power supply and control method for power supply
    Patent number: 10797595
    Abstract: A current detection circuit included in a power supply detects a current flowing to an inductance element from a detection tap of an inductance element connected between an output terminal and an output of a first switching element. A control circuit included in the power supply controls a first control terminal of the first switching element and a second control terminal of a second switching element and calculates an output current flowing to a load based on the current detected by the current detection circuit.
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: October 6, 2020
    Assignee: FDK CORPORATION
    Inventors: Yu Yonezawa, Jun Oikawa, Eiji Nagashima, Yoshiyasu Nakashima
  • Coating agent
    Patent number: 10752804
    Abstract: A coating agent includes a polyurethane and a hydrocarbon-based synthetic wax.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: August 25, 2020
    Assignee: NICHIAS CORPORATION
    Inventors: Hideharu Aoyagi, Tomokazu Watanabe, Hideaki Mori, Hirotaka Natori, Nahoko Kitajima, Mai Fujiwara, Jun Tachiki, Jun Oikawa
  • POWER SUPPLY AND CONTROL METHOD FOR POWER SUPPLY
    Publication number: 20190341848
    Abstract: A current detection circuit included in a power supply detects a current flowing to an inductance element from a detection tap of an inductance element connected between an output terminal and an output of a first switching element. A control circuit included in the power supply controls a first control terminal of the first switching element and a second control terminal of a second switching element and calculates an output current flowing to a load based on the current detected by the current detection circuit.
    Type: Application
    Filed: July 22, 2019
    Publication date: November 7, 2019
    Applicant: FDK CORPORATION
    Inventors: Yu YONEZAWA, Jun OIKAWA, Eiji NAGASHIMA, Yoshiyasu NAKASHIMA
  • COATING AGENT
    Publication number: 20170152397
    Abstract: A coating agent includes a polyurethane and a hydrocarbon-based synthetic wax.
    Type: Application
    Filed: June 8, 2015
    Publication date: June 1, 2017
    Applicant: NICHIAS CORPORATION
    Inventors: Hideharu AOYAGI, Tomokazu WATANABE, Hideaki MORI, Hirotaka NATORI, Nahoko KITAJIMA, Mai FUJIWARA, Jun TACHIKI, Jun OIKAWA
  • Inorganic fibers
    Patent number: 9156731
    Abstract: Provided are inorganic fibers which can exhibit high biosolubility and have excellent heat resistance as the constituting material for a filter material, a sealing material or the like, while exerting minimized effects on the human body or the living environment even when the fibers have an average diameter of 1 ?m or less. Inorganic fibers including 35 mass% to 88 mass% of Al2O3, 3 mass% to 45 mass% of CaO and 5 mass% to 40 mass% of SiO2, wherein the total content of Al2O3, CaO and SiO2 is 98 mass% or more of the entire fibers.
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: October 13, 2015
    Assignee: NICHIAS CORPORATION
    Inventors: Kazutaka Murayama, Jun Oikawa, Kiyoshi Sato
  • Inorganic fiber and method for manufacturing the same
    Patent number: 9156730
    Abstract: To provide an inorganic fiber that suppresses adverse effects on a human body and living environments, exhibits high biosolubility, and also exhibits excellent heat resistance as a constituent material for a filter material, a sealing material, or the like. The inorganic fiber comprises 30 mass % or more and less than 81 mass % of Al2O3, more than 19 mass % and 65 mass % or less of MgO and 0 mass % to 40 mass % of SiO2, wherein the total content of Al2O3, MgO and SiO2 relative to the entire fiber is 98 mass % or more.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: October 13, 2015
    Assignee: NICHIAS CORPORATION
    Inventors: Kazutaka Murayama, Jun Oikawa, Kiyoshi Sato
  • INORGANIC FIBER AND METHOD FOR MANUFACTURING THE SAME
    Publication number: 20130327976
    Abstract: To provide an inorganic fiber that suppresses adverse effects on a human body and living environments, exhibits high biosolubility, and also exhibits excellent heat resistance as a constituent material for a filter material, a sealing material, or the like. The inorganic fiber comprises 30 mass % or more and less than 81 mass % of Al2O3, more than 19 mass % and 65 mass % or less of MgO and 0 mass % to 40 mass % of SiO2, wherein the total content of Al2O3, MgO and SiO2 relative to the entire fiber is 98 mass % or more.
    Type: Application
    Filed: November 30, 2011
    Publication date: December 12, 2013
    Applicant: NICHIAS CORPORATION
    Inventors: Kazutaka Murayama, Jun Oikawa, Kiyoshi Sato
  • INORGANIC FIBERS
    Publication number: 20130331254
    Abstract: Provided are inorganic fibers which can exhibit high biosolubility and have excellent heat resistance as the constituting material for a filter material, a sealing material or the like, while exerting minimized effects on the human body or the living environment even when the fibers have an average diameter of 1 ?m or less. Inorganic fibers including 35 mass % to 88 mass % of Al2O3, 3 mass % to 45 mass % of CaO and 5 mass % to 40 mass % of SiO2, wherein the total content of Al2O3, CaO and SiO2 is 98 mass % or more of the entire fibers.
    Type: Application
    Filed: August 26, 2011
    Publication date: December 12, 2013
    Applicant: NICHIAS CORPORATION
    Inventors: Kazutaka Murayama, Jun Oikawa, Kiyoshi Sato