Inventor · disambiguated record
Masao Ohi
Also filed as: OHI MASAO
3 granted patents·38 citations·filing 1987–1988
65Inventor score
Files withHITACHI LTD3
Top patents by PatentIndex Score
3 records- 0174US4851766AFault diagnosis system for rotor winding of rotary electric machineHITACHI LTD·Filed 1987·Granted Jul 25, 1989·33 cites·6 claims
- 0227US4912834AMethod of adjusting thermal balance of rotorHITACHI LTD·Filed 1988·Granted Apr 3, 1990·5 cites·5 claims
- 0324US4748363ACurrent-collecting brush apparatusHITACHI LTD·Filed 1987·Granted May 31, 1988·0 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →