Inventor · disambiguated record
Ryoji Negi
Also filed as: NEGI RYOJI
5 granted patents·12 citations·filing 2011–2022
71Inventor score
Top patents by PatentIndex Score
5 records- 0174US9225075B2High voltage device system of railcar and railcarKAWASAKI HIROYUKI·Filed 2011·Granted Dec 29, 2015·5 cites·11 claims
- 0270US10029709B2RailcarKAWASAKI HEAVY IND LTD·Filed 2013·Granted Jul 24, 2018·3 cites·11 claims
- 0360US9352653B2Circuit breaking unit and railcar including the sameKAWASAKI HIROYUKI·Filed 2011·Granted May 31, 2016·3 cites·12 claims
- 0457US11745774B2Track displacement measurement device, track displacement measurement system, and track displacement measurement methodKAWASAKI RAILCAR MFG CO LTD·Filed 2022·Granted Sep 5, 2023·0 cites·19 claims
- 0546US9831644B2Connection structure between main transformer and high-voltage device box and railcar including sameKAWASAKI HEAVY IND LTD·Filed 2013·Granted Nov 28, 2017·1 cites·8 claims
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