Inventor · disambiguated record
Yu Koiwa
Also filed as: KOIWA YU
4 granted patents·66 citations·filing 2001–2019
75Inventor score
Technology areasF16C
Files withNSK LTD4
Top patents by PatentIndex Score
4 records- 0191US6742934B2Rolling bearing and spindle apparatus for machine toolNSK LTD·Filed 2001·Granted Jun 1, 2004·39 cites·21 claims
- 0274US6443623B2Lubrication system for rolling bearingNSK LTD·Filed 2001·Granted Sep 3, 2002·16 cites·10 claims
- 0366US6733181B2Bearing unitNSK LTD·Filed 2001·Granted May 11, 2004·11 cites·1 claims
- 0462USRE48843ERolling bearing and spindle apparatus for machine toolNSK LTD·Filed 2019·Granted Dec 7, 2021·0 cites·21 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →