Inventor · disambiguated record
Nagataka Seki
Also filed as: SEKI NAGATAKA
18 granted patents·270 citations·filing 1977–1995
95Inventor score
Top patents by PatentIndex Score
18 records- 0176US4675800APower converter with a failure detector of a self-turn-off semiconductor elementTOSHIBA KK·Filed 1984·Granted Jun 23, 1987·25 cites·9 claims
- 0274US4546423AMultiple inverters with overcurrent and shoot-through protectionTOKYO SHIBAURA ELECTRIC CO·Filed 1983·Granted Oct 8, 1985·29 cites·17 claims
- 0371US4275430ADV/DT Protection circuit device for gate turn-off thyristorTOKYO SHIBAURA ELECTRIC CO·Filed 1977·Granted Jun 23, 1981·13 cites·1 claims
- 0470US4667283APower converter apparatus including a chopper regulated inverter systemTOSHIBA KK·Filed 1985·Granted May 19, 1987·29 cites·8 claims
- 0570US4203047AGate circuit of gate turn-off thyristorTOKYO SHIBAURA ELECTRIC CO·Filed 1978·Granted May 13, 1980·16 cites·5 claims
- 0669US4890213APower converter device having starting circuits and a method for starting the power converter deviceTOSHIBA KK·Filed 1988·Granted Dec 26, 1989·26 cites·14 claims
- 0768US4171517AApparatus for synchronization control of a plurality of invertersTOKYO SHIBAURA ELECTRIC CO·Filed 1977·Granted Oct 16, 1979·13 cites·8 claims
- 0864US4922124AArrangement for connecting plural self-commutated voltage type inverters to a utility gridTOSHIBA KK·Filed 1988·Granted May 1, 1990·27 cites·15 claims
- 0964US4464585AGate circuit of gate turn-off thyristorTOKYO SHIBAURA ELECTRIC CO·Filed 1983·Granted Aug 7, 1984·13 cites·11 claims
- 1056US5550730APower converting apparatus for system interconnectionTOSHIBA KK·Filed 1995·Granted Aug 27, 1996·14 cites·33 claims
- 1155US4212054ADC Power sourceTOKYO SHIBAURA ELECTRIC CO·Filed 1978·Granted Jul 8, 1980·9 cites·9 claims
- 1251US4600917AGate-turn-off thyristor failure detecting circuitTOKYO SHIBAURA ELECTRIC CO·Filed 1983·Granted Jul 15, 1986·9 cites·8 claims
- 1349US4878208AVoltage-phase responsive, inverter disable circuit for system interconnectionTOSHIBA KK·Filed 1988·Granted Oct 31, 1989·20 cites·11 claims
- 1444US5355298AConversion apparatus including latch and non-latch type functionsTOSHIBA KK·Filed 1993·Granted Oct 11, 1994·11 cites·17 claims
- 1540US5371664ALine-commutated and self-commutated combined power conversion systemTOSHIBA KK·Filed 1992·Granted Dec 6, 1994·8 cites·4 claims
- 1634US4568837AGate circuit for gate turn-off thyristorTOKYO SHIBAURA ELECTRIC CO·Filed 1983·Granted Feb 4, 1986·3 cites·6 claims
- 1734US4329652AApparatus for synchronization control of a plurality of invertersTOKYO SHIBAURA ELECTRIC CO·Filed 1979·Granted May 11, 1982·2 cites·2 claims
- 1831US4301500AGate control system of the inverter using gate-turn-off thyristorsTOKYO SHIBAURA ELECTRIC CO·Filed 1980·Granted Nov 17, 1981·3 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →