Assignee
HITACHI ENERGY LTD
CH·273 granted patents·145 pending applications·19 citations·filing 2014–2025
Top patents by PatentIndex Score
418 records- 0187US12261421B2Bushing with electrically conductive head mounted on condenser coreHITACHI ENERGY LTD·Filed 2021·Granted Mar 25, 2025·3 cites·10 claims
- 0285US12394553B2Transformer tank for a shell type transformer, shell type transformer and method for clamping a magnetic core of a shell type transformerHITACHI ENERGY LTD·Filed 2024·Granted Aug 19, 2025·0 cites·11 claims
- 0385US11881349B2Winding, a transformer and a transformer arrangementHITACHI ENERGY LTD·Filed 2023·Granted Jan 23, 2024·2 cites·8 claims
- 0484US12080474B1Transformer and a transformer arrangementHITACHI ENERGY LTD·Filed 2022·Granted Sep 3, 2024·2 cites·16 claims
- 0584US12073976B2Electric device comprising liquidfilled tank and cable box with current measuring deviceHITACHI ENERGY LTD·Filed 2021·Granted Aug 27, 2024·1 cites·8 claims
- 0683US2026051732A1Methods and devices for condition classification of power network assetsHITACHI ENERGY LTD·Filed 2025·Application pending·0 cites
- 0783US2026045529A1Fleet of fuel cell-based generation systems and a control method thereofHITACHI ENERGY LTD·Filed 2025·Application pending·0 cites
- 0883US2026045406A1Transformer arrangementHITACHI ENERGY LTD·Filed 2025·Application pending·0 cites
- 0982US2025364810A1Method of controlling a power distribution system including a microgridHITACHI ENERGY LTD·Filed 2025·Application pending·0 cites
- 1082US2025285796A1Transformer tank for a shell type transformer, shell type transformer and method for clamping a magnetic core of a shell type transformerHITACHI ENERGY LTD·Filed 2025·Application pending·0 cites
- 1180US11984812B2Dual active bridge converter cell with split energy transfer inductor for optimized current balancing in the medium frequency transformer (MFT)HITACHI ENERGY LTD·Filed 2020·Granted May 14, 2024·1 cites·20 claims
- 1279US11831133B2Bushing equipped with an optical fibreHITACHI ENERGY LTD·Filed 2019·Granted Nov 28, 2023·3 cites·14 claims
- 1379US2024258024A1Wireless transmissions through a transformer tankHITACHI ENERGY LTD·Filed 2024·Application pending·0 cites
- 1479US2025149874A1Fault classification and zone identification in a power transmission systemHITACHI ENERGY LTD·Filed 2024·Application pending·0 cites
- 1579US2026058473A1Dc integrated energy storage system for hybrid ac/dc and dc power systemsHITACHI ENERGY LTD·Filed 2025·Application pending·0 cites
- 1677US2025359140A1Power semiconductor device and method for producing a power semiconductor deviceHITACHI ENERGY LTD·Filed 2025·Application pending·0 cites
- 1776US12406317B2Method and system for decentralized energy forecasting and schedulingHITACHI ENERGY LTD·Filed 2024·Granted Sep 2, 2025·0 cites·20 claims
- 1876US12165825B2Switching system for an on-load tap changer, on-load tap changer and method for switching a tap connection of an on-load tap changerHITACHI ENERGY LTD·Filed 2023·Granted Dec 10, 2024·0 cites·19 claims
- 1976US11907865B2Determination of security-constrained optimal power flowHITACHI ENERGY LTD·Filed 2020·Granted Feb 20, 2024·2 cites·21 claims
- 2076US2025355035A1Fault location determination in a power transmission systemHITACHI ENERGY LTD·Filed 2025·Application pending·0 cites
- 2175US11967449B2Transformer tank for a shell type transformer, shell type transformer and method for clamping a magnetic core of a shell type transformerHITACHI ENERGY LTD·Filed 2022·Granted Apr 23, 2024·0 cites·16 claims
- 2275US2026038726A1Coil arrangement and transformerHITACHI ENERGY LTD·Filed 2025·Application pending·0 cites
- 2374US12510434B2Gas pressure monitoring device of gas insulated switchgear, gas pressure monitoring method thereof, and gas leak position identification methodHITACHI ENERGY LTD·Filed 2023·Granted Dec 30, 2025·0 cites·8 claims
- 2474US12020886B2Contact unit and contact system for an on-load tap changer and on-load tap changerHITACHI ENERGY LTD·Filed 2023·Granted Jun 25, 2024·0 cites·19 claims
- 2574US11877153B2Method of authentication of wireless communication based on physical layer securityHITACHI ENERGY LTD·Filed 2020·Granted Jan 16, 2024·1 cites·18 claims
- 2674US2026023133A1Method for detecting a ground fault, a control unit and an energy storage systemHITACHI ENERGY LTD·Filed 2025·Application pending·0 cites
- 2774US2026023132A1Method for locating a ground fault, a control unit and an energy storage systemHITACHI ENERGY LTD·Filed 2025·Application pending·0 cites
- 2873US2024044965A1Parameter independent traveling wave-based fault location using unsynchronized measurementsHITACHI ENERGY LTD·Filed 2023·Application pending·0 cites
- 2971US2024380211A1Energy supporting deviceHITACHI ENERGY LTD·Filed 2024·Application pending·0 cites
- 3070US12494632B2Chargeless interrupter device for surge arresterHITACHI ENERGY LTD·Filed 2021·Granted Dec 9, 2025·0 cites·18 claims
- 3170US12384253B2Electrical vehicle comprising an energy transfer deviceHITACHI ENERGY LTD·Filed 2020·Granted Aug 12, 2025·1 cites·20 claims
- 3270US12278472B2Fault classification and zone identification in a power transmission systemHITACHI ENERGY LTD·Filed 2021·Granted Apr 15, 2025·0 cites·10 claims
- 3370US2025118485A1A transformer arrangementHITACHI ENERGY LTD·Filed 2023·Application pending·0 cites
- 3470US2025111988A1A transformer arrangementHITACHI ENERGY LTD·Filed 2023·Application pending·0 cites
- 3569US12480837B2Monitoring of a power deviceHITACHI ENERGY LTD·Filed 2022·Granted Nov 25, 2025·0 cites·16 claims
- 3669US12217922B2Method for monitoring vacuum interrupter's condition and an electric switching deviceHITACHI ENERGY LTD·Filed 2020·Granted Feb 4, 2025·1 cites·14 claims
- 3769US2024355704A1Power semiconductor moduleHITACHI ENERGY LTD·Filed 2024·Application pending·0 cites
- 3867US12328079B2Communication in a converter deviceHITACHI ENERGY LTD·Filed 2022·Granted Jun 10, 2025·0 cites·20 claims
- 3967US12057259B2Transformer arrangement and method for assembling a transformer arrangementHITACHI ENERGY LTD·Filed 2022·Granted Aug 6, 2024·0 cites·14 claims
- 4066US12444921B2Interrupter device for surge arresterHITACHI ENERGY LTD·Filed 2020·Granted Oct 14, 2025·0 cites·24 claims
- 4166US2026001441A1Control of a power distribution systemHITACHI ENERGY LTD·Filed 2023·Application pending·0 cites
- 4266US2026045886A1Power control of a power converterHITACHI ENERGY LTD·Filed 2025·Application pending·0 cites
- 4365US12431311B2Anti-rebound protection device and circuit breaker comprising the sameHITACHI ENERGY LTD·Filed 2023·Granted Sep 30, 2025·0 cites·9 claims
- 4465US12080461B2Electric transformer assembly, method for determining a thermal state of an electric transformer, and determination deviceHITACHI ENERGY LTD·Filed 2022·Granted Sep 3, 2024·0 cites·20 claims
- 4565US12021375B2Overvoltage protection for HV bushing test tapHITACHI ENERGY LTD·Filed 2021·Granted Jun 25, 2024·0 cites·20 claims
- 4665US11942742B2Condenser core, bushing, high voltage application and method of producing bushingHITACHI ENERGY LTD·Filed 2019·Granted Mar 26, 2024·2 cites·20 claims
- 4765US2025370060A1Obtaining state of health and state of charge of a batteryHITACHI ENERGY LTD·Filed 2025·Application pending·0 cites
- 4865US2026052023A1Method for authenticating messages in resource limited systemsHITACHI ENERGY LTD·Filed 2025·Application pending·0 cites
- 4965US2025226651A1Method, device, and system for adapting distance protection against reactance effect due to remote infeed and fault resistanceHITACHI ENERGY LTD·Filed 2025·Application pending·0 cites
- 5065US2025383633A1Arrangement and a method for balancing power in an ac power transmission systemHITACHI ENERGY LTD·Filed 2025·Application pending·0 cites
Showing the top 50 of 418 patent records by PatentIndex Score.
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