Inventor · disambiguated record
Masaji Usui
Also filed as: USUI MASAJI
6 granted patents·50 citations·filing 1982–2009
81Inventor score
Top patents by PatentIndex Score
6 records- 0151US4530025ACurrent ratio-differential relayMITSUBISHI ELECTRIC CORP·Filed 1983·Granted Jul 16, 1985·14 cites·5 claims
- 0243US8155796B2Protective relay deviceUSUI MASAJI·Filed 2009·Granted Apr 10, 2012·1 cites·7 claims
- 0343US4502013AInput converting circuitMITSUBISHI ELECTRIC CORP·Filed 1982·Granted Feb 26, 1985·8 cites·5 claims
- 0442US4661877ATransformer protective relayMITSUBISHI ELECTRIC CORP·Filed 1985·Granted Apr 28, 1987·11 cites·6 claims
- 0539US4477854APortective relay with second harmonic suppressionMITSUBISHI ELECTRIC CORP·Filed 1983·Granted Oct 16, 1984·11 cites·8 claims
- 0631US4513344AProtective relay for power systemMITSUBISHI ELECTRIC CORP·Filed 1982·Granted Apr 23, 1985·5 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →