Inventor
TSUCHIDA NAOKI
JP26 patents
⚠️ This page may combine multiple inventors who share the name “TSUCHIDA NAOKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
YAMAHA MOTOR CO LTD
23 patentsUS5836274ANov 17, 1998
Multi valve engine with variable valve operation
YAMAHA MOTOR CO LTD37 citations95
US6148794ANov 21, 2000
Induction control system for multi-valve engine
YAMAHA MOTOR CO LTD18 citations92
US5852994ADec 29, 1998
Induction control system for multi-valve engine
YAMAHA MOTOR CO LTD41 citations92
US5819706AOct 13, 1998
Air-assisted injection system for multi-valve engine
YAMAHA MOTOR CO LTD29 citations92
US5799638ASep 1, 1998
Direction injection system for multi-valve engine
YAMAHA MOTOR CO LTD25 citations92
US5785017AJul 28, 1998
Variable valve timing mechanism
YAMAHA MOTOR CO LTD17 citations92
US5758612AJun 2, 1998
Valve actuating structure for multi-valve engine
YAMAHA MOTOR CO LTD38 citations92
US5735240AApr 7, 1998
Direct injected engine
YAMAHA MOTOR CO LTD33 citations92
US5606942AMar 4, 1997
Valve operating system for multi-valve engine
YAMAHA MOTOR CO LTD46 citations92
US6170449B1Jan 9, 2001
Valve operating system for engine
YAMAHA MOTOR CO LTD23 citations91
US4617881AOct 21, 1986
Actuating mechanism for multiple valve internal combustion engine
YAMAHA MOTOR CO LTD28 citations91
US5704330AJan 6, 1998
Cylinder head arrangement for internal combustion engine
YAMAHA MOTOR CO LTD20 citations84
US4679532AJul 14, 1987
Valve arrangement for internal combustion engine
YAMAHA MOTOR CO LTD19 citations81
US7357105B2Apr 15, 2008
Hydraulic valve driving device and engine including the same and vehicle
YAMAHA MOTOR CO LTD12 citations77
US5809968ASep 22, 1998
Cylinder head and flow passage therefor
YAMAHA MOTOR CO LTD11 citations74
US5529038AJun 25, 1996
Direct injected engine
YAMAHA MOTOR CO LTD18 citations74
US4592314AJun 3, 1986
Valve actuating mechanism for internal combustion engine
YAMAHA MOTOR CO LTD19 citations74
US5809953ASep 22, 1998
Variable valve timing mechanism
YAMAHA MOTOR CO LTD9 citations73
US5752479AMay 19, 1998
Valve operating mechanism for 4-cycle engine
YAMAHA MOTOR CO LTD10 citations73
US5575254ANov 19, 1996
Induction system for engine
YAMAHA MOTOR CO LTD7 citations73
US5427065AJun 27, 1995
Valve operating mechanism for 4-cycle engine
YAMAHA MOTOR CO LTD8 citations73
US4434755AMar 6, 1984
Motorcycle with closeable engine intake and exhaust passages
YAMAHA MOTOR CO LTD18 citations68
US6834629B2Dec 28, 2004
Three dimensional cam, grinding method and grinding apparatus
YAMAHA MOTOR CO LTD2 citations61