Inventor · disambiguated record
Eiji Haraguchi
Also filed as: HARAGUCHI EIJI
7 granted patents·287 citations·filing 1986–1988
88Inventor score
Files withHITACHI LTD7
Top patents by PatentIndex Score
7 records- 0193US4694189AControl system for variable speed hydraulic turbine generator apparatusHITACHI LTD·Filed 1986·Granted Sep 15, 1987·85 cites·10 claims
- 0292US4754156AControl apparatus for variable-speed hydraulic power generating systemHITACHI LTD·Filed 1987·Granted Jun 28, 1988·66 cites·5 claims
- 0387US4812729AProtecting apparatus for secondary excitation type variable speed AC generator/motorHITACHI LTD·Filed 1987·Granted Mar 14, 1989·64 cites·17 claims
- 0480US4823018AControl system for variable speed water-wheel generator apparatusHITACHI LTD·Filed 1987·Granted Apr 18, 1989·37 cites·8 claims
- 0566US4870339AVariable-speed power generating systemHITACHI LTD·Filed 1988·Granted Sep 26, 1989·22 cites·9 claims
- 0641US4766360AInduction generator/motor systemHITACHI LTD·Filed 1986·Granted Aug 23, 1988·9 cites·6 claims
- 0733US4743826APumping-up generator/motor system and method of operation of the sameHITACHI LTD·Filed 1986·Granted May 10, 1988·4 cites·4 claims
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