Inventor
NAKAHAMA RYOJI
JP29 patents
⚠️ This page may combine multiple inventors who share the name “NAKAHAMA RYOJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SANSHIN KOGYO KK
21 patentsUS5352137AOct 4, 1994
Automatic position controller for marine propulsions
SANSHIN KOGYO KK48 citations92
US4850911AJul 25, 1989
Power transmission device for inboard/outboard system
SANSHIN KOGYO KK24 citations92
US4811717AMar 14, 1989
Device driving injection pump for fuel-injection engine
SANSHIN KOGYO KK24 citations92
US4570776AFeb 18, 1986
Detent mechanism for clutches
SANSHIN KOGYO KK42 citations92
US4734065AMar 29, 1988
System for stable running of marine propulsions
SANSHIN KOGYO KK27 citations90
US4682961AJul 28, 1987
Tilt device for boat propulsion machine
SANSHIN KOGYO KK23 citations82
US4673358AJun 16, 1987
Mounting arrangement for outboard drive
SANSHIN KOGYO KK22 citations82
US4557696ADec 10, 1985
Tilt mechanism for marine propulsion device
SANSHIN KOGYO KK20 citations82
US4726799AFeb 23, 1988
Outboard motor
SANSHIN KOGYO KK17 citations81
US5184967AFeb 9, 1993
Thrust flange lubricating structure of marine propulsion unit
SANSHIN KOGYO KK8 citations74
US4909226AMar 20, 1990
Device driving injection pump for fuel-injection engine
SANSHIN KOGYO KK6 citations74
US4631035ADec 23, 1986
Hydraulic tilt device for marine propulsion unit
SANSHIN KOGYO KK13 citations74
US4931027AJun 5, 1990
Tilting device for outboard engine
SANSHIN KOGYO KK9 citations73
US4781631ANov 1, 1988
Supporting device for marine propulsion apparatus
SANSHIN KOGYO KK14 citations73
US4615683AOct 7, 1986
Outboard motor
SANSHIN KOGYO KK11 citations73
US4575342AMar 11, 1986
Tilt lock mechanism for marine propulsion device
SANSHIN KOGYO KK11 citations73
US4551104ANov 5, 1985
Tilt lock mechanism for marine propulsion device
SANSHIN KOGYO KK14 citations73
US5759073AJun 2, 1998
Dual propeller system for marine drive
SANSHIN KOGYO KK13 citations72
US5207170AMay 4, 1993
Marine propulsion unit control system
SANSHIN KOGYO KK5 citations63
US4795001AJan 3, 1989
Two-cycle fuel-injection engine
SANSHIN KOGYO KK3 citations62
US4767365AAug 30, 1988
Shifting device for inboard-outboard drive
SANSHIN KOGYO KK6 citations62
YAMAHA MOTOR CO LTD
5 patentsUS4559018ADec 17, 1985
Outboard motor
YAMAHA MOTOR CO LTD62 citations92
US4527441AJul 9, 1985
Shifting apparatus for a propelling unit for a vessel
YAMAHA MOTOR CO LTD27 citations92
US4421490ADec 20, 1983
Exhaust silencer structure for outboard engines
YAMAHA MOTOR CO LTD30 citations92
US4521202AJun 4, 1985
Tilt locking system for ship propellers
YAMAHA MOTOR CO LTD11 citations74
US4545769AOct 8, 1985
Tilt locking system for boat propellers
YAMAHA MOTOR CO LTD13 citations73