Inventor
NAKASE RYOICHI
JP62 patents
⚠️ This page may combine multiple inventors who share the name “NAKASE RYOICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SANSHIN KOGYO KK
31 patentsUS5558549ASep 24, 1996
Four cycle engine for watercraft
SANSHIN KOGYO KK66 citations96
US5031562AJul 16, 1991
Marine steering apparatus
SANSHIN KOGYO KK55 citations96
US4997399AMar 5, 1991
Exhaust system for small vessel
SANSHIN KOGYO KK58 citations96
US6010378AJan 4, 2000
Watercraft catalytic exhaust system
SANSHIN KOGYO KK21 citations93
US5782214AJul 21, 1998
Exhaust timing control for a planing-type boat
SANSHIN KOGYO KK31 citations93
US5634832AJun 3, 1997
Induction system for four-cycle watercraft engine
SANSHIN KOGYO KK25 citations93
US5562509AOct 8, 1996
Watercraft catalytic exhaust system
SANSHIN KOGYO KK24 citations93
US5531620AJul 2, 1996
Water-cooled exhaust system for watercraft
SANSHIN KOGYO KK27 citations93
US5154650AOct 13, 1992
Water jet propulsion unit
SANSHIN KOGYO KK40 citations93
US5049099ASep 17, 1991
Power tilt device
SANSHIN KOGYO KK22 citations93
US4971584ANov 20, 1990
Water jet propelling vessel
SANSHIN KOGYO KK32 citations93
US4850908AJul 25, 1989
Drawing away device of bilge water for water jet propulsion
SANSHIN KOGYO KK29 citations93
US4565528AJan 21, 1986
Tilting mechanism for marine propulsion device
SANSHIN KOGYO KK43 citations93
US5558456ASep 24, 1996
Drive bearing arrangements for watercraft
SANSHIN KOGYO KK27 citations92
US5524597AJun 11, 1996
Ignition system for watercraft
SANSHIN KOGYO KK22 citations92
US5251439AOct 12, 1993
Exhaust device for small sized boat engine
SANSHIN KOGYO KK25 citations92
US5067448ANov 26, 1991
Exhaust cooling device for small sized boat engine
SANSHIN KOGYO KK37 citations92
US4989409AFeb 5, 1991
Exhaust device for small sized boat engine
SANSHIN KOGYO KK39 citations92
US5702276ADec 30, 1997
Watercraft catalytic exhaust system
SANSHIN KOGYO KK19 citations84
US4813898AMar 21, 1989
Water jet propulsion
SANSHIN KOGYO KK20 citations82
US4811560AMar 14, 1989
Exhaust system for marine propulsion
SANSHIN KOGYO KK23 citations82
US4773883ASep 27, 1988
Motor for watercrafts
SANSHIN KOGYO KK22 citations82
US6565399B2May 20, 2003
Watercraft catalytic exhaust system
SANSHIN KOGYO KK5 citations74
US6138632AOct 31, 2000
Pump control for small watercraft
SANSHIN KOGYO KK5 citations74
US5853308ADec 29, 1998
Engine and exhaust system for watercraft
SANSHIN KOGYO KK7 citations74
US5732672AMar 31, 1998
Lubricant supply for internal combustion engine
SANSHIN KOGYO KK6 citations74
US5632660AMay 27, 1997
Watercraft catalytic exhaust system
SANSHIN KOGYO KK9 citations74
US5372526ADec 13, 1994
Drive bearing lubricating device for water injection propulsion vessel
SANSHIN KOGYO KK18 citations74
US5366397ANov 22, 1994
Water jet propulsion unit
SANSHIN KOGYO KK17 citations74
US4765075AAug 23, 1988
Water propulsion unit of water jet propulsion craft
SANSHIN KOGYO KK19 citations74
US4744322AMay 17, 1988
Remote steering system for marine propulsion crafts
SANSHIN KOGYO KK12 citations74
YAMAHA MOTOR CO LTD
19 patentsUS5902158AMay 11, 1999
Small watercraft
YAMAHA MOTOR CO LTD40 citations96
US6120335ASep 19, 2000
Catalytic exhaust system for watercraft
YAMAHA MOTOR CO LTD29 citations93
US5902161AMay 11, 1999
Air temperature sensor arrangement for a small watercraft
YAMAHA MOTOR CO LTD23 citations93
US5788547AAug 4, 1998
Exhaust pipe cooling system for watercraft
YAMAHA MOTOR CO LTD34 citations93
US6024068AFeb 15, 2000
Watercraft engine control
YAMAHA MOTOR CO LTD27 citations92
US6015321AJan 18, 2000
Fuel pump mounting arrangement for personal watercraft
YAMAHA MOTOR CO LTD27 citations92
US5967861AOct 19, 1999
Throttle position sensor mounting arrangement for personal watercraft engine
YAMAHA MOTOR CO LTD17 citations92
US5906524AMay 25, 1999
Throttle position sensor mounting arrangement for personal watercraft engine
YAMAHA MOTOR CO LTD19 citations92
US5797775AAug 25, 1998
Engine control system for a watercraft
YAMAHA MOTOR CO LTD26 citations92
US6022253AFeb 8, 2000
Injection system for small watercraft
YAMAHA MOTOR CO LTD17 citations84
US4583953AApr 22, 1986
Outboard motor
YAMAHA MOTOR CO LTD24 citations82
US6478644B1Nov 12, 2002
Exhaust pipe cooling system for watercraft
YAMAHA MOTOR CO LTD11 citations74
US6425789B2Jul 30, 2002
Small watercraft
YAMAHA MOTOR CO LTD6 citations74
US6279546B1Aug 28, 2001
Watercraft fuel supply system
YAMAHA MOTOR CO LTD11 citations74
US6210243B1Apr 3, 2001
Fuel pump arrangement for watercraft
YAMAHA MOTOR CO LTD10 citations74
US6200178B1Mar 13, 2001
Small watercraft
YAMAHA MOTOR CO LTD7 citations74
US6095876AAug 1, 2000
Engine component layout
YAMAHA MOTOR CO LTD14 citations74
US5954553ASep 21, 1999
Watercraft with catalytic exhaust system
YAMAHA MOTOR CO LTD11 citations74
US5931712AAug 3, 1999
Exhaust probe arrangement for small watercraft engine
YAMAHA MOTOR CO LTD10 citations74
Showing the top 50 of 62 patents by PatentIndex Score.