Inventor · disambiguated record
Youhei Nagai
Also filed as: NAGAI YOUHEI
3 granted patents·20 citations·filing 1994–2005
67Inventor score
Top patents by PatentIndex Score
3 records- 0172US7310192B2Zoom lensNIDEC COPAL CORP·Filed 2005·Granted Dec 18, 2007·7 cites·16 claims
- 0267US7035024B2Imaging lensNIDEC COPAL CORP·Filed 2005·Granted Apr 25, 2006·3 cites·14 claims
- 0340US5516981AMusical instrument tuned in nineteen note temperament scaleYAMAHA CORP·Filed 1994·Granted May 14, 1996·10 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →