Inventor · disambiguated record
Tadashi Takaoka
Also filed as: TAKAOKA TADASHI
5 granted patents·80 citations·filing 1977–1991
80Inventor score
Files withHITACHI LTD5
Top patents by PatentIndex Score
5 records- 0182US4093162ATrain operation control apparatusHITACHI LTD·Filed 1977·Granted Jun 6, 1978·18 cites·6 claims
- 0281US4825131AControl system for induction motor driven electric carHITACHI LTD·Filed 1987·Granted Apr 25, 1989·41 cites·18 claims
- 0334US5248926AControl apparatus for induction motor and electric rolling stockHITACHI LTD·Filed 1991·Granted Sep 28, 1993·15 cites·17 claims
- 0433US4684859AChopper control systemHITACHI LTD·Filed 1985·Granted Aug 4, 1987·4 cites·8 claims
- 0529US4752723AChopper control systemHITACHI LTD·Filed 1987·Granted Jun 21, 1988·2 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →