Inventor
AMMA HIROFUMI
JP12 patents
⚠️ This page may combine multiple inventors who share the name “AMMA HIROFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
YAMAHA MOTOR CO LTD
11 patentsUS12325497B2Jun 10, 2025
Marine vessel that suitably transmits rescue signal, and method for controlling the same
YAMAHA MOTOR CO LTD2 citations71
US11691697B2Jul 4, 2023
Marine vessel and marine vessel imaging device
YAMAHA MOTOR CO LTD0 citations61
US11059549B2Jul 13, 2021
Marine vessel and marine vessel operation support device
YAMAHA MOTOR CO LTD1 citations61
US12583567B2Mar 24, 2026
Small marine vessel capable in which action position of thrust force is changeable
YAMAHA MOTOR CO LTD0 citations59
US12497142B2Dec 16, 2025
Method and apparatus for displaying azimuth of marine vessel, marine vessel, and storage medium
YAMAHA MOTOR CO LTD0 citations59
US11904988B2Feb 20, 2024
Watercraft
YAMAHA MOTOR CO LTD0 citations59
US12424105B2Sep 23, 2025
Information processing method, information processing system, and control program
YAMAHA MOTOR CO LTD0 citations57
US11383800B2Jul 12, 2022
Marine vessel display device, marine vessel, and image display method for marine vessel
YAMAHA MOTOR CO LTD0 citations51
US11323635B2May 3, 2022
Imaging device including distance calculator for ship and ship including the imaging device
YAMAHA MOTOR CO LTD0 citations51
US12589845B2Mar 31, 2026
Vessel operator warning support system and vessel operator warning support method
YAMAHA MOTOR CO LTD0 citations49
US12134447B2Nov 5, 2024
Watercraft
YAMAHA MOTOR CO LTD0 citations46