Inventor · disambiguated record
Hiroaki Kuroha
Also filed as: KUROHA HIROAKI
6 granted patents·66 citations·filing 1977–1983
83Inventor score
Files withHITACHI LTD6
Top patents by PatentIndex Score
6 records- 0174US4263988ASpeed control system for a motorHITACHI LTD·Filed 1978·Granted Apr 28, 1981·23 cites·20 claims
- 0266US4133018AThyristor fault-detecting apparatusHITACHI LTD·Filed 1977·Granted Jan 2, 1979·16 cites·6 claims
- 0351US4361866APower converter apparatusHITACHI LTD·Filed 1981·Granted Nov 30, 1982·9 cites·15 claims
- 0443US4171505AFault detecting system for a control systemHITACHI LTD·Filed 1977·Granted Oct 16, 1979·7 cites·26 claims
- 0542US4256204ASafety apparatus for elevator systemHITACHI LTD·Filed 1978·Granted Mar 17, 1981·8 cites·7 claims
- 0634US4584636AAC-to-DC power converter with improved power factor and overvoltage suppressionHITACHI LTD·Filed 1983·Granted Apr 22, 1986·3 cites·20 claims
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