Inventor
SHIRAKAWA Tohru
JP29 patents
⚠️ This page may combine multiple inventors who share the name “SHIRAKAWA Tohru”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJI ELECTRIC CO LTD
28 patentsUS10600897B2Mar 24, 2020
Semiconductor device
FUJI ELECTRIC CO LTD3 citations73
US10128230B2Nov 13, 2018
Semiconductor device
FUJI ELECTRIC CO LTD3 citations73
US11450762B2Sep 20, 2022
Semiconductor device
FUJI ELECTRIC CO LTD4 citations72
US10050029B2Aug 14, 2018
Semiconductor device
FUJI ELECTRIC CO LTD2 citations72
US10050105B2Aug 14, 2018
Semiconductor device
FUJI ELECTRIC CO LTD5 citations71
US11264491B2Mar 1, 2022
Semiconductor device for improving transistor characteristics during turn-on
FUJI ELECTRIC CO LTD3 citations70
US12206015B2Jan 21, 2025
Semiconductor device
FUJI ELECTRIC CO LTD0 citations62
US12015058B2Jun 18, 2024
Semiconductor device
FUJI ELECTRIC CO LTD0 citations62
US11715771B2Aug 1, 2023
Semiconductor device and manufacturing method
FUJI ELECTRIC CO LTD0 citations62
US11195749B2Dec 7, 2021
Semiconductor device and manufacturing method
FUJI ELECTRIC CO LTD1 citations62
US10777549B2Sep 15, 2020
Semiconductor device
FUJI ELECTRIC CO LTD1 citations62
US10186574B2Jan 22, 2019
Super junction MOSFET device and semiconductor chip
FUJI ELECTRIC CO LTD1 citations62
US11574999B2Feb 7, 2023
Semiconductor device
FUJI ELECTRIC CO LTD0 citations61
US11335795B2May 17, 2022
Reverse-conducting IGBT and manufacturing method thereof
FUJI ELECTRIC CO LTD0 citations61
US12431448B2Sep 30, 2025
Semiconductor device
FUJI ELECTRIC CO LTD0 citations60
US12165998B2Dec 10, 2024
Semiconductor device
FUJI ELECTRIC CO LTD0 citations60
US10720519B2Jul 21, 2020
Semiconductor device and manufacturing method of semiconductor device
FUJI ELECTRIC CO LTD0 citations52
US10516018B2Dec 24, 2019
Super junction MOSFET device and semiconductor chip
FUJI ELECTRIC CO LTD0 citations52
US10297682B2May 21, 2019
Semiconductor device and manufacturing method of semiconductor device
FUJI ELECTRIC CO LTD0 citations52
US12471303B2Nov 11, 2025
Semiconductor device having an injection suppression region
FUJI ELECTRIC CO LTD0 citations51
US12414342B2Sep 9, 2025
Semiconductor device
FUJI ELECTRIC CO LTD0 citations51
US12183789B2Dec 31, 2024
Semiconductor device
FUJI ELECTRIC CO LTD0 citations51
US11658179B2May 23, 2023
Semiconductor device with insulated-gate bipolar transistor region and diode region
FUJI ELECTRIC CO LTD0 citations51
US10483357B2Nov 19, 2019
Semiconductor device
FUJI ELECTRIC CO LTD0 citations51
US12439622B2Oct 7, 2025
Semiconductor device and manufacturing method of semiconductor device
FUJI ELECTRIC CO LTD0 citations50
US12342607B2Jun 24, 2025
Semiconductor device
FUJI ELECTRIC CO LTD0 citations50
US11532738B2Dec 20, 2022
Semiconductor device
FUJI ELECTRIC CO LTD0 citations48
US10566448B2Feb 18, 2020
Insulated gate bipolar transistor
FUJI ELECTRIC CO LTD0 citations41