Inventor · disambiguated record
Katsuo Itou
Also filed as: ITOU KATSUO
4 granted patents·52 citations·filing 2000–2002
77Inventor score
Files withYAMAHA CORP4
Top patents by PatentIndex Score
4 records- 0166US6265647B1Keyboard musical instrument having hammer stopper changed between free position and blocking position through turn on horizontal planeYAMAHA CORP·Filed 2000·Granted Jul 24, 2001·12 cites·11 claims
- 0263US6730839B2Silent system with split hammer stopper and keyboard musical instrument having the sameYAMAHA CORP·Filed 2002·Granted May 4, 2004·10 cites·21 claims
- 0363US6194649B1Keyboard musical instrument equipped with partially repaireable change-over mechanism for changing hammer stopperYAMAHA CORP·Filed 2000·Granted Feb 27, 2001·12 cites·13 claims
- 0458US6407321B2Jig for aligning shutter with photo couplers and key and assembling method using the sameYAMAHA CORP·Filed 2001·Granted Jun 18, 2002·18 cites·40 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →