Patents by Inventor Yuki NAGASAWA

Yuki NAGASAWA 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).

  • Fuel cap
    Patent number: 10625603
    Abstract: A fuel cap capable of preventing a reduction in breathability in a housing due to a moistened adsorbent and appropriately discharging fuel vapor includes a housing including an inner space through which vapor generated in a fuel tank flows upward from below. A granular adsorbent is disposed in the inner space of the housing. A lower air-permeable layer is disposed below the adsorbent, and an upper air-permeable layer is disposed above the adsorbent. A lower porous member is disposed between the adsorbent and the lower air-permeable layer. The lower air-permeable layer, the lower porous member, and the upper air-permeable layer respectively have a porous structure. A density of the lower porous member is lower than a density of the lower air-permeable layer and a density of the upper air-permeable layer.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: April 21, 2020
    Assignee: YAMAHA MOTOR POWER PRODUCTS KABUSHIKI KAISYA
    Inventors: Yuki Nagasawa, Naoyuki Yagi
  • FUEL CAP
    Publication number: 20180186231
    Abstract: A fuel cap capable of preventing a reduction in breathability in a housing due to a moistened adsorbent and appropriately discharging fuel vapor includes a housing including an inner space through which vapor generated in a fuel tank flows upward from below. A granular adsorbent is disposed in the inner space of the housing. A lower air-permeable layer is disposed below the adsorbent, and an upper air-permeable layer is disposed above the adsorbent. A lower porous member is disposed between the adsorbent and the lower air-permeable layer. The lower air-permeable layer, the lower porous member, and the upper air-permeable layer respectively have a porous structure. A density of the lower porous member is lower than a density of the lower air-permeable layer and a density of the upper air-permeable layer.
    Type: Application
    Filed: February 26, 2016
    Publication date: July 5, 2018
    Inventors: Yuki NAGASAWA, Naoyuki YAGI
  • Engine generator
    Patent number: D871337
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: December 31, 2019
    Assignee: YAMAHA MOTOR POWER PRODUCTS KABUSHIKI KAISHA
    Inventors: Yuki Nagasawa, Yuma Katsuda