Patents by Inventor Junya TSUKADA

Junya TSUKADA 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).

  • Garbage collection watercraft
    Patent number: 12459611
    Abstract: A garbage collection watercraft includes a hull, a collection box, and a buoyant material. The collection box includes an intake port to receive garbage. The collection box is held by the hull so as to be movable between a collection position and a pull-up position. The collection box is at least partially located underwater at the collection position. The pull-up position is located higher than the collection position. The buoyant material is attached to the collection box. The buoyant material raises the collection box from the collection position to the pull-up position by a buoyant force.
    Type: Grant
    Filed: August 11, 2022
    Date of Patent: November 4, 2025
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Takuma Ishida, Junya Tsukada, Junya Onoue
  • BOAT PROPULSOR, BOAT, AND PLATE
    Publication number: 20240262476
    Abstract: A boat propulsor includes a duct, a propeller in the duct and rotatable around a rotation axis extending along an axial direction of the duct, and a rotator to rotate the propeller. An upper portion of the duct includes a plate extending from the duct in the axial direction and including holes. Water streams passing around and along the duct are attenuated as the water streams pass through the holes in the plate.
    Type: Application
    Filed: December 11, 2023
    Publication date: August 8, 2024
    Inventors: Shunsuke WATANABE, Junya TSUKADA, Toshio SUZUKI
  • Outboard motor
    Patent number: 11827322
    Abstract: An outboard motor includes a duct, a propeller, a central shaft, and a plurality of fins. The duct includes a circular hole. The propeller is located in the circular hole. The propeller includes a boss and a plurality of blades radially extending from the boss. The central shaft rotatably supports the propeller. The plurality of fins radially extend from the central shaft and connect the central shaft and the duct. The plurality of fins define an airfoil profile.
    Type: Grant
    Filed: May 24, 2021
    Date of Patent: November 28, 2023
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Junya Tsukada, Hikaru Yasukawa
  • GARBAGE COLLECTION WATERCRAFT
    Publication number: 20230135883
    Abstract: A garbage collection watercraft includes a hull, a collection box, and a buoyant material. The collection box includes an intake port to receive garbage. The collection box is held by the hull so as to be movable between a collection position and a pull-up position. The collection box is at least partially located underwater at the collection position. The pull-up position is located higher than the collection position. The buoyant material is attached to the collection box. The buoyant material raises the collection box from the collection position to the pull-up position by a buoyant force.
    Type: Application
    Filed: August 11, 2022
    Publication date: May 4, 2023
    Inventors: Takuma ISHIDA, Junya TSUKADA, Junya ONOUE
  • OUTBOARD MOTOR
    Publication number: 20220017198
    Abstract: An outboard motor includes a duct, a propeller, a central shaft, and a plurality of fins. The duct includes a circular hole. The propeller is located in the circular hole. The propeller includes a boss and a plurality of blades radially extending from the boss. The central shaft rotatably supports the propeller. The plurality of fins radially extend from the central shaft and connect the central shaft and the duct. The plurality of fins define an airfoil profile.
    Type: Application
    Filed: May 24, 2021
    Publication date: January 20, 2022
    Inventors: Junya TSUKADA, Hikaru YASUKAWA