Seki; Nagataka

Patent Applications and Registrations

Patent applications and USPTO patent grants for Seki; Nagataka.The latest application filed is for "arrangement for connecting plural self-commutated voltage type inverters to a utility grid".

Company Profile

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Seki; Nagataka - Tokyo JP
Seki; Nagataka - Fuchu JP

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Arrangement for connecting plural self-commutated voltage type inverters to a utility grid Grant 4,922,124 - Seki , et al. May 1, 1	1990-05-01
Voltage-phase responsive, inverter disable circuit for system interconnection Grant 4,878,208 - Seki , et al. October 31, 1	1989-10-31
Power converter with a failure detector of a self-turn-off semiconductor element Grant 4,675,800 - Seki , et al. June 23, 1	1987-06-23
Power converter apparatus including a chopper regulated inverter system Grant 4,667,283 - Seki , et al. May 19, 1	1987-05-19
Multiple inverters with overcurrent and shoot-through protection Grant 4,546,423 - Seki October 8, 1	1985-10-08
Gate circuit of gate turn-off thyristor Grant 4,464,585 - Seki August 7, 1	1984-08-07
Apparatus for synchronization control of a plurality of inverters Grant 4,329,652 - Higa , et al. May 11, 1	1982-05-11
DV/DT Protection circuit device for gate turn-off thyristor Grant 4,275,430 - Seki , et al. June 23, 1	1981-06-23
DC Power source Grant 4,212,054 - Seki July 8, 1	1980-07-08
Inverter Device Grant 3,694,727 - Seki September 26, 1	1972-09-26

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