Inventor · disambiguated record
Kazuhiko Doi
Also filed as: DOI KAZUHIKO
4 granted patents·1 pending application·52 citations·filing 1989–2017
74Inventor score
Top patents by PatentIndex Score
5 records- 0179US4982816ASpeed control system for elevatorsOTIS ELEVATOR CO·Filed 1989·Granted Jan 8, 1991·34 cites·3 claims
- 0243US4903187AControl for variable frequency driveOTIS ELEVATOR CO·Filed 1989·Granted Feb 20, 1990·11 cites·1 claims
- 0338US2019242870A1Plasma separation apparatus and plasma separation methodCELLSPECT CO LTD·Filed 2017·Application pending·0 cites
- 0437US5396161ATemperature compensator circuit for an induction motorOTIS ELEVATOR CO·Filed 1992·Granted Mar 7, 1995·7 cites·4 claims
- 0528US5347206AVector control method of induction motorOTIS ELEVATOR CO·Filed 1991·Granted Sep 13, 1994·0 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →