Inventor
TAKAYANAGI YUJI
JP5 patents
⚠️ This page may combine multiple inventors who share the name “TAKAYANAGI YUJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI POWER SEMICONDUCTOR DEVICE LTD
3 patentsUS11539361B2Dec 27, 2022
Semiconductor 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 vehicle
HITACHI POWER SEMICONDUCTOR DEVICE LTD0 citations61
US11496041B2Nov 8, 2022
Gate drive device, gate drive method, power semiconductor module, and electric power conversion device
HITACHI POWER SEMICONDUCTOR DEVICE LTD1 citations57
US12438115B2Oct 7, 2025
Power semiconductor module
HITACHI POWER SEMICONDUCTOR DEVICE LTD0 citations49
HITACHI LTD
2 patentsUS5459338AOct 17, 1995
Gate turn-off thyristor and power convertor using the same
HITACHI LTD8 citations71
US5635734AJun 3, 1997
Insulated gate type semiconductor device in which the reliability and characteristics thereof are not deteriorated due to pressing action and power inverter using the same
HITACHI LTD6 citations61