Inventor · disambiguated record
Koju Tsukahara
Also filed as: TSUKAHARA KOJU
3 granted patents·50 citations·filing 2001–2005
69Inventor score
Files withYAMAHA MOTOR CO LTD3
Top patents by PatentIndex Score
3 records- 0187US6530812B2Secondary thrust arrangement for small watercraftYAMAHA MOTOR CO LTD·Filed 2001·Granted Mar 11, 2003·42 cites·29 claims
- 0268US7536855B2Exhaust control device for water jet propulsion boatYAMAHA MOTOR CO LTD·Filed 2005·Granted May 26, 2009·6 cites·21 claims
- 0360US8016989B2Exhaust gas sensorYAMAHA MOTOR CO LTD·Filed 2005·Granted Sep 13, 2011·2 cites·22 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →