Inventor
NAKAYASU YOSHIKAZU
JP29 patents
⚠️ This page may combine multiple inventors who share the name “NAKAYASU YOSHIKAZU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SANSHIN KOGYO KK
14 patentsUS4997399AMar 5, 1991
Exhaust system for small vessel
SANSHIN KOGYO KK58 citations96
US6415766B1Jul 9, 2002
Engine idle control system
SANSHIN KOGYO KK25 citations92
US5839928ANov 24, 1998
Shifting mechanism for outboard drive
SANSHIN KOGYO KK18 citations92
US5660571AAug 26, 1997
Muffling device for outboard propulsion machine
SANSHIN KOGYO KK24 citations92
US5601464AFeb 11, 1997
Transmission system for counter-rotational propulsion device
SANSHIN KOGYO KK33 citations92
US5449306ASep 12, 1995
Shifting mechanism for outboard drive
SANSHIN KOGYO KK26 citations92
US5447456ASep 5, 1995
Power steering system for watercraft
SANSHIN KOGYO KK20 citations92
US5370564ADec 6, 1994
Outboard motor
SANSHIN KOGYO KK39 citations92
US6446599B1Sep 10, 2002
Idle speed control for engine
SANSHIN KOGYO KK17 citations84
US6227172B1May 8, 2001
Fuel injected outboard motor
SANSHIN KOGYO KK13 citations74
US5820425AOct 13, 1998
Outboard drive lower unit
SANSHIN KOGYO KK15 citations74
US5520559AMay 28, 1996
Shifting mechanism for outboard drive
SANSHIN KOGYO KK13 citations74
US4730591AMar 15, 1988
Fuel supplying system of outboard motor
SANSHIN KOGYO KK15 citations74
US4820215AApr 11, 1989
Fuel supplying system for outboard motor
SANSHIN KOGYO KK15 citations72
YAMAHA MOTOR CO LTD
13 patentsUS11753132B1Sep 12, 2023
System and method for controlling propulsion device mounted on watercraft
YAMAHA MOTOR CO LTD4 citations75
US11402838B1Aug 2, 2022
System for and method of controlling watercraft
YAMAHA MOTOR CO LTD2 citations73
US10661872B1May 26, 2020
System for and method of controlling watercraft
YAMAHA MOTOR CO LTD5 citations73
US9156537B1Oct 13, 2015
Watercraft propulsion system and propulsion machine controlling method
YAMAHA MOTOR CO LTD5 citations73
US9120548B2Sep 1, 2015
Marine vessel steering system
YAMAHA MOTOR CO LTD5 citations73
US11505300B1Nov 22, 2022
Ship maneuvering system and ship maneuvering method
YAMAHA MOTOR CO LTD1 citations62
US11453471B1Sep 27, 2022
Vessel steering system and vessel steering method
YAMAHA MOTOR CO LTD0 citations62
US12221199B1Feb 11, 2025
System for and method of controlling propulsion device
YAMAHA MOTOR CO LTD0 citations52
US12097945B2Sep 24, 2024
Vessel operation system and vessel
YAMAHA MOTOR CO LTD0 citations52
US8032271B2Oct 4, 2011
Boat propulsion unit and boat
YAMAHA MOTOR CO LTD0 citations52
US12084161B2Sep 10, 2024
System for and method of controlling watercraft
YAMAHA MOTOR CO LTD0 citations50
US12233998B2Feb 25, 2025
Vessel operation system and vessel
YAMAHA MOTOR CO LTD0 citations44
US7558664B2Jul 7, 2009
Outboard motor fuel controller
YAMAHA MOTOR CO LTD1 citations42