Assignee

HITACHI POWER SEMICONDUCTOR DEVICE LTD

JP·43 granted patents·20 pending applications·51 citations·filing 2013–2025

Technology mixH01L46 H10D36 H02M35 H10W30 H03K14 H10P13

Top patents by PatentIndex Score

63 records

0192US10079536B2Rectifier, alternator using same and power supply using sameHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2016·Granted Sep 18, 2018·8 cites·11 claims
0290US11942512B2Semiconductor device and power conversion deviceHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2021·Granted Mar 26, 2024·2 cites·10 claims
0389US9478605B2Semiconductor device with similar impurity concentration JTE regionsHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2013·Granted Oct 25, 2016·7 cites·6 claims
0485US11012022B2Inverter device and electric motor device using sameHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2018·Granted May 18, 2021·2 cites·14 claims
0581US10529813B2Semiconductor device, power module, and power conversion deviceHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2018·Granted Jan 7, 2020·3 cites·15 claims
0681US10374414B2Semiconductor power module and power conversion apparatus using the sameHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2015·Granted Aug 6, 2019·4 cites·8 claims
0780US10304761B2Semiconductor device and alternator using sameHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2016·Granted May 28, 2019·4 cites·8 claims
0880US9831145B2Semiconductor device, and alternator and power converter using the semiconductor deviceHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2015·Granted Nov 28, 2017·4 cites·17 claims
0977US11496041B2Gate drive device, gate drive method, power semiconductor module, and electric power conversion deviceHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2021·Granted Nov 8, 2022·1 cites·9 claims
1076US11282937B2Semiconductor device and power conversion deviceHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2019·Granted Mar 22, 2022·2 cites·16 claims
1176US2025234600A1Semiconductor device and power conversion deviceHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2025·Application pending·0 cites
1274US10916643B2Semiconductor device, method for controlling semiconductor device, and control circuit for semiconductor deviceHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2018·Granted Feb 9, 2021·2 cites·8 claims
1374US9966871B2Rectification device, alternator, and power conversion deviceHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2014·Granted May 8, 2018·4 cites·14 claims
1472US11296212B2Semiconductor device and power conversion deviceHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2019·Granted Apr 5, 2022·2 cites·15 claims
1571US10069436B2Synchronous rectifier and alternator using the sameHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2015·Granted Sep 4, 2018·2 cites·15 claims
1669US10205314B2Rectifier including MOSFET and hold circuit that boosts gate voltage of MOSFET, and alternator using the sameHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2017·Granted Feb 12, 2019·1 cites·20 claims
1765US9076774B2Semiconductor device and a method of manufacturing sameHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2013·Granted Jul 7, 2015·1 cites·4 claims
1862US11539361B2Semiconductor device signal transmission circuit for drive-control, method of controlling semiconductor device signal transmission circuit for drive-control, semiconductor device, power conversion device, and electric system for railway vehicleHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2021·Granted Dec 27, 2022·0 cites·8 claims
1961US12300716B2Semiconductor device and power conversion deviceHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2020·Granted May 13, 2025·0 cites·8 claims
2060US11881514B2Semiconductor device and termination structureHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2021·Granted Jan 23, 2024·0 cites·13 claims
2157US9531368B2Semiconductor switch circuit, signal processing apparatus, and ultrasound diagnostic apparatusHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2014·Granted Dec 27, 2016·2 cites·10 claims
2255US12327808B2Semiconductor deviceHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2022·Granted Jun 10, 2025·0 cites·8 claims
2355US11955878B2Upper arm drive circuit, drive circuit of power conversion device, and power conversion deviceHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2022·Granted Apr 9, 2024·0 cites·16 claims
2455US9755014B2Semiconductor device with substantially equal impurity concentration JTE regions in a vicinity of a junction depthHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2016·Granted Sep 5, 2017·0 cites·6 claims
2553US12463100B2Semiconductor moduleHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2021·Granted Nov 4, 2025·0 cites·10 claims
2652US12592651B2Rectifier circuit and power supply using sameHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2022·Granted Mar 31, 2026·0 cites·12 claims
2752US12453121B2Semiconductor deviceHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2021·Granted Oct 21, 2025·0 cites·15 claims
2852US2024297592A1Power semiconductor module and power conversion device using the sameHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2022·Application pending·0 cites
2952US2024145331A1Power semiconductor moduleHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2022·Application pending·0 cites
3051US12339309B2Energization inspection apparatus, method for manufacturing semiconductor device, and energization methodHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2022·Granted Jun 24, 2025·0 cites·5 claims
3151US10522638B2Semiconductor chip and power module, and manufacturing method of the sameHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2018·Granted Dec 31, 2019·0 cites·15 claims
3251US2023402420A1Semiconductor device and method for manufacturing the sameHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2021·Application pending·0 cites
3350US12549109B2Rectifier circuit and power supply using the sameHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2022·Granted Feb 10, 2026·0 cites·12 claims
3450US11652023B2Semiconductor device including a semiconductor element with a gate electrode on only one surfaceHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2020·Granted May 16, 2023·0 cites·14 claims
3550US10847614B2Semiconductor device having a stacked electrode with an electroless nickel plating layerHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2019·Granted Nov 24, 2020·0 cites·16 claims
3650US2024014088A1Power semiconductor deviceHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2021·Application pending·0 cites
3750US2024274708A1Semiconductor device, method for manufacturing the semiconductor device, and power conversion deviceHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2022·Application pending·0 cites
3850US2024379830A1Semiconductor device, power conversion device using same, and manufacturing method for semiconductor deviceHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2022·Application pending·0 cites
3949US2024355888A1Semiconductor device and power conversion deviceHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2022·Application pending·0 cites
4049US2024290829A1Semiconductor device and power conversion deviceHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2022·Application pending·0 cites
4148US10763346B2Semiconductor device and power conversion apparatusHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2017·Granted Sep 1, 2020·0 cites·20 claims
4248US2024363766A1Semiconductor device and power conversion deviceHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2022·Application pending·0 cites
4348US2024274490A1Semiconductor moduleHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2022·Application pending·0 cites
4448US2024055423A1Semiconductor device, rectifying element using same, and alternatorHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2020·Application pending·0 cites
4547US2024290698A1Power semiconductor module and power conversion deviceHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2022·Application pending·0 cites
4646US12438115B2Power semiconductor moduleHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2020·Granted Oct 7, 2025·0 cites·10 claims
4746US2023282561A1Power semiconductor module and power conversion deviceHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2021·Application pending·0 cites
4846US2023246021A1Semiconductor device and power converterHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2021·Application pending·0 cites
4945US10319849B2Semiconductor device, and alternator and power conversion device which use sameHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2014·Granted Jun 11, 2019·0 cites·18 claims
5045US9991336B2Semiconductor device, method for manufacturing the same, and power conversion systemHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2017·Granted Jun 5, 2018·0 cites·12 claims

Showing the top 50 of 63 patent records by PatentIndex Score.

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