Patents by Inventor Yuji MASAMURA

Yuji MASAMURA 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).

  • Grease composition, machine component, and starter overrunning clutch
    Patent number: 11713430
    Abstract: A silicone grease composition is disclosed. The grease composition contains a silicone oil and zinc dialkyldithiocarbamate as an extreme-pressure additive. The grease composition contains substantially no zinc dialkyldithiophosphate. The grease composition achieves high friction characteristics and wear characteristics. A method for transmitting torque of a clutch or a torque limiter mechanism is also disclosed. Moreover, a method for producing a clutch or a torque limiter mechanism is disclosed. The methods utilize the aforementioned grease composition.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: August 1, 2023
    Assignees: DENSO CORPORATION, DUPONT TORAY SPECIALTY MATERIALS KABUSHIKI KAISHA
    Inventors: Yoshinori Fukushima, Youichi Hasegawa, Yuji Masamura, Makoto Mori, Koji Sakakibara
  • Grease composition, machine component, and starter overrunning clutch
    Patent number: 11390826
    Abstract: A silicone grease composition having high friction characteristics and wear characteristics is disclosed. The silicone grease composition is provided by adding a zinc salt (B) containing, at a mass ratio from 1:99 to 99:1, a zinc dialkyldithiophosphate (B1) and a zinc dialkyldithiocarbamate (B2) as an extreme-pressure additive to a silicone oil (A). A method for transmitting torque of a clutch or a torque limiter mechanism is also disclosed.
    Type: Grant
    Filed: June 5, 2020
    Date of Patent: July 19, 2022
    Assignees: DENSO CORPORATION, DUPONT TORAY SPECIALTY MATERIALS KABUSHIKI KAISHA
    Inventors: Yoshinori Fukushima, Koji Sakakibara, Youichi Hasegawa, Makoto Mori, Yuji Masamura
  • GREASE COMPOSITION, MACHINE COMPONENT, AND STARTER OVERRUNNING CLUTCH
    Publication number: 20200299607
    Abstract: A silicone grease composition having high friction characteristics and wear characteristics is disclosed. The silicone grease composition is provided by adding a zinc salt (B) containing, at a mass ratio from 1:99 to 99:1, a zinc dialkyldithiophosphate (B1) and a zinc dialkyldithiocarbamate (B2) as an extreme-pressure additive to a silicone oil (A). A method for transmitting torque of a clutch or a torque limiter mechanism is also disclosed.
    Type: Application
    Filed: June 5, 2020
    Publication date: September 24, 2020
    Inventors: Yoshinori FUKUSHIMA, Koji SAKAKIBARA, Youichi HASEGAWA, Makoto MORI, Yuji MASAMURA
  • GREASE COMPOSITION, MACHINE COMPONENT, AND STARTER OVERRUNNING CLUTCH
    Publication number: 20200181521
    Abstract: A silicone grease composition is disclosed. The grease composition contains a silicone oil and zinc dialkyldithiocarbamate as an extreme-pressure additive. The grease composition contains substantially no zinc dialkyldithiophosphate. The grease composition achieves high friction characteristics and wear characteristics. A method for transmitting torque of a clutch or a torque limiter mechanism is also disclosed. Moreover, a method for producing a clutch or a torque limiter mechanism is disclosed. The methods utilize the aforementioned grease composition.
    Type: Application
    Filed: February 19, 2020
    Publication date: June 11, 2020
    Inventors: Yoshinori FUKUSHIMA, Youichi HASEGAWA, Yuji MASAMURA, Makoto MORI, Koji SAKAKIBARA
  • GREASE COMPOSITION, MACHINE COMPONENT, AND STARTER OVERRUNNING CLUTCH
    Publication number: 20190085257
    Abstract: A silicone grease composition is disclosed. The silicone grease composition contains a silicone oil (A) and zinc dialkyldithiocarbamate (BX) as an extreme-pressure additive. The silicone grease composition contains substantially no zinc dialkyldithiophosphate (BX). The silicone grease composition achieves high friction characteristics and wear characteristics.
    Type: Application
    Filed: January 20, 2017
    Publication date: March 21, 2019
    Inventors: Yoshinori FUKUSHIMA, Youichi HASEGAWA, Yuji MASAMURA, Makoto MORI, Koji SAKAKIBARA
  • GREASE COMPOSITION, MACHINE COMPONENT, AND STARTER OVERRUNNING CLUTCH
    Publication number: 20190085260
    Abstract: A silicone grease composition having high friction characteristics and wear characteristics is disclosed. The silicone grease composition is provided by adding a zinc salt (B) containing, at a mass ratio from 1:99 to 99:1, a zinc dialkyldithiophosphate (B1) and a zinc dialkyldithiocarbamate (B2) as an extreme-pressure additive to a silicone oil (A).
    Type: Application
    Filed: January 20, 2017
    Publication date: March 21, 2019
    Inventors: Yoshinori FUKUSHIMA, Youichi HASEGAWA, Yuji MASAMURA, Makoto MORI, Koji SAKAKIBARA