Inventor · disambiguated record
Yu Motoyama
Also filed as: MOTOYAMA YU
21 granted patents·480 citations·filing 1990–1999
96Inventor score
Files withYAMAHA MOTOR CO LTD21
Top patents by PatentIndex Score
21 records- 0182US5211145AFuel injection system for engineYAMAHA MOTOR CO LTD·Filed 1992·Granted May 18, 1993·42 cites·20 claims
- 0281US5190006AInjection arrangement for improving fuel consumptionYAMAHA MOTOR CO LTD·Filed 1991·Granted Mar 2, 1993·35 cites·33 claims
- 0380US6085733AIgnition control system for engineYAMAHA MOTOR CO LTD·Filed 1998·Granted Jul 11, 2000·41 cites·18 claims
- 0480US5181493AOperation control device for in-cylinder injection engineYAMAHA MOTOR CO LTD·Filed 1991·Granted Jan 26, 1993·43 cites·39 claims
- 0576US5113829ATwo cycle internal combustion engineYAMAHA MOTOR CO LTD·Filed 1990·Granted May 19, 1992·31 cites·46 claims
- 0675US5063888AExhaust control valve system for parallel multi-cylinder two-cycle engineYAMAHA MOTOR CO LTD·Filed 1990·Granted Nov 12, 1991·30 cites·45 claims
- 0773US5063887AExhaust control valve system for parallel multi-cylinder two-cycle engineYAMAHA MOTOR CO LTD·Filed 1990·Granted Nov 12, 1991·29 cites·28 claims
- 0868US6039012AOperating control system for 2 cycle direct injection engineYAMAHA MOTOR CO LTD·Filed 1997·Granted Mar 21, 2000·23 cites·16 claims
- 0968US5123399AAir fuel injector assemblyYAMAHA MOTOR CO LTD·Filed 1990·Granted Jun 23, 1992·24 cites·9 claims
- 1066US5193508AFuel injection systemYAMAHA MOTOR CO LTD·Filed 1990·Granted Mar 16, 1993·21 cites·11 claims
- 1164US5092287AFuel injecting system for two cycle engineYAMAHA MOTOR CO LTD·Filed 1991·Granted Mar 3, 1992·23 cites·14 claims
- 1260US5682870AAir fuel ratio detecting device and system for enginesYAMAHA MOTOR CO LTD·Filed 1995·Granted Nov 4, 1997·19 cites·24 claims
- 1357US5613468AFuel injection controlYAMAHA MOTOR CO LTD·Filed 1996·Granted Mar 25, 1997·18 cites·27 claims
- 1456US5826557AOperation control system for direct injection 2 cycle engineYAMAHA MOTOR CO LTD·Filed 1997·Granted Oct 27, 1998·19 cites·17 claims
- 1553US5690063AEngine control systemYAMAHA MOTOR CO LTD·Filed 1996·Granted Nov 25, 1997·18 cites·20 claims
- 1650US6109223AOperating method of two stroke direct injected engineYAMAHA MOTOR CO LTD·Filed 1999·Granted Aug 29, 2000·12 cites·11 claims
- 1750US5095873AFuel injection system and method for engineYAMAHA MOTOR CO LTD·Filed 1990·Granted Mar 17, 1992·12 cites·25 claims
- 1848US5946908AEngine control and wall temperature sensorYAMAHA MOTOR CO LTD·Filed 1997·Granted Sep 7, 1999·13 cites·18 claims
- 1947US5136990AFuel injection system including supplemental fuel injectorYAMAHA MOTOR CO LTD·Filed 1990·Granted Aug 11, 1992·11 cites·40 claims
- 2038US5732674AEngine control systemYAMAHA MOTOR CO LTD·Filed 1996·Granted Mar 31, 1998·11 cites·33 claims
- 2134US5105792AFuel injection system for an engineYAMAHA MOTOR CO LTD·Filed 1990·Granted Apr 21, 1992·5 cites·13 claims
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