Patents by Inventor Tomomi Iwai

Tomomi Iwai 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: 20210262361
    Abstract: There is provided a turbine in which a sufficient measure against windage loss can be executed. In a turbine of an embodiment, a cooling medium higher in pressure and lower in temperature than a working medium is introduced to the inside from the outside of a turbine casing. Here, in at least a turbine stage of an exhaust stage, the cooling medium passes through a stator blade and thereafter passes through a flow path present between rotor blades and a rotor wheel to flow to an exhaust-stage wheel space.
    Type: Application
    Filed: February 8, 2021
    Publication date: August 26, 2021
    Applicant: TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION
    Inventors: Tsuguhisa TASHIMA, Takahiro ONO, Shogo IWAI, Daisuke NOMURA, Norikazu TAKAGI, Tomomi OKUYAMA, Koki NISHIMURA
  • Publication number: 20210222748
    Abstract: [Object] This invention relates to a friction material used for a disc brake pad, which is manufactured by forming a non-asbestos-organic (NAO) friction material composition that contains a binder, a fiber base material, a friction modifier, a lubricant, a pH adjuster, and a filler, which satisfies requirements for the required braking effectiveness, crack resistance, and fade resistance. [Means to Resolve] The friction material, which is made from the NAO friction material composition, which includes the binder, the fiber base material, the friction modifier, the lubricant, the pH adjuster, and the filler, where the friction modifier contains 5-30 mass % of a magnesium potassium titanate, which has the alkali elution rate of 0.1-2.5 mass %, relative to the total amount of the friction material composition.
    Type: Application
    Filed: March 27, 2021
    Publication date: July 22, 2021
    Applicant: NISSHINBO BRAKE, INC.
    Inventors: TAKAO TANAKA, TOMOMI IWAI, MITSUAKI YAGUCHI
  • Patent number: 10670099
    Abstract: [Object] The present invention provides a friction material used for a disc brake pad, which is manufactured by forming a non-asbestos-organic (NAO) friction material composition that does not contain a copper component, which provides an excellent wear resistance and a highly stable braking effectiveness even after being subjected to a history of high temperatures and high loads. [Means to Resolve] The friction material composition for the friction material molding containing, as an inorganic friction modifier, 10-40 weight % of a monoclinic zirconium oxide with an average particle diameter of 1-8 ?m relative to the total amount of the friction material composition, 1.
    Type: Grant
    Filed: October 3, 2016
    Date of Patent: June 2, 2020
    Assignee: NISSHINBO BRAKE INC.
    Inventors: Mitsuaki Yaguchi, Shinya Kaji, Tomomi Iwai
  • Publication number: 20200032869
    Abstract: The present invention addresses the problem of providing a friction material for a disc brake pad, which is able to secure effective braking performance and wear resistance during the high speed and high load braking while satisfying laws and regulations relating to copper content. The solution to this problem is using a non-asbestos organic (NAO) friction material for a disc brake pad, which is formed by molding a friction material composition comprising a fiber base material, a binder, and a friction modifier, and specially comprising, as an inorganic friction modifier, 1-10 weight % of one or any combination of two or more of aluminum particles, aluminum fibers, alloy particles mainly containing aluminum, and alloy fibers mainly containing aluminum relative to the total amount of the friction material composition, 5-20 weight % of hard inorganic particles with an average particle diameter of 1-20 ?m and a Mohs hardness of 4.5 to 8.0, and copper content of less than 0.5 weight %.
    Type: Application
    Filed: September 4, 2019
    Publication date: January 30, 2020
    Applicant: Nisshinbo Brake, Inc.
    Inventors: Shinya Kaji, Ryo Yamagami, Tomomi Iwai
  • Publication number: 20190154094
    Abstract: [Object] This invention relates to a friction material used for a disc brake pad, which is manufactured by forming a non-asbestos-organic (NAO) friction material composition that contains a binder, a fiber base material, a friction modifier, a lubricant, a pH adjuster, and a filler, which satisfies requirements for the required braking effectiveness, crack resistance, and fade resistance. [Means to Resolve] The friction material, which is made from the NAO friction material composition, which includes the binder, the fiber base material, the friction modifier, the lubricant, the pH adjuster, and the filler, where the friction modifier contains 5-30 mass % of a later crystal structure titanate, which has the alkali elution rate of 0.1-2.5 mass %, relative to the total amount of the friction material composition.
    Type: Application
    Filed: April 4, 2017
    Publication date: May 23, 2019
    Applicant: NISSHINBO BRAKE, INC.
    Inventors: TAKAO TANAKA, TOMOMI IWAI, MITSUAKI YAGUCHI
  • Publication number: 20180298971
    Abstract: [Object] The present invention provides a friction material used for a disc brake pad, which is manufactured by forming a non-asbestos-organic (NAO) friction material composition that does not contain a copper component, which provides an excellent wear resistance and a highly stable braking effectiveness even after being subjected to a history of high temperatures and high loads. [Means to Resolve] The friction material composition for the friction material molding containing, as an inorganic friction modifier, 10-40 weight % of a monoclinic zirconium oxide with an average particle diameter of 1-8 ?m relative to the total amount of the friction material composition, 1.
    Type: Application
    Filed: October 3, 2016
    Publication date: October 18, 2018
    Applicant: NISSHINBO BRAKE, INC.
    Inventors: Mitsuaki YAGUCHI, Shinya KAJI, Tomomi IWAI
  • Publication number: 20160230827
    Abstract: The present invention addresses the problem of providing a friction material for a disc brake pad, which is able to secure effective braking performance and wear resistance during the high speed and high load braking while satisfying laws and regulations relating to copper content. The solution to this problem is using a non-asbestos organic (NAO) friction material for a disc brake pad, which is formed by molding a friction material composition comprising a fiber base material, a binder, and a friction modifier, and specially comprising, as an inorganic friction modifier, 1-10 weight % of one or any combination of two or more of aluminum particles, aluminum fibers, alloy particles mainly containing aluminum, and alloy fibers mainly containing aluminum relative to the total amount of the friction material composition, 5-20 weight % of hard inorganic particles with an average particle diameter of 1-20 ?m and a Mohs hardness of 4.5 or more, and copper content of less than 0.5 weight %.
    Type: Application
    Filed: September 9, 2014
    Publication date: August 11, 2016
    Applicant: Nisshinbo Brake, Inc.
    Inventors: Shinya Kaji, Ryo Yamagami, Tomomi Iwai