Inventor
ONOZAWA YUICHI
JP78 patents
⚠️ This page may combine multiple inventors who share the name “ONOZAWA YUICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJI ELECTRIC CO LTD
48 patentsUS6737705B2May 18, 2004
Insulated gate semiconductor device
FUJI ELECTRIC CO LTD58 citations96
US10374102B2Aug 6, 2019
Semiconductor device
FUJI ELECTRIC CO LTD5 citations84
US10304928B2May 28, 2019
Semiconductor device and method of manufacturing semiconductor device
FUJI ELECTRIC CO LTD10 citations84
US9954086B2Apr 24, 2018
Semiconductor device having multiple field stop layers
FUJI ELECTRIC CO LTD7 citations84
US9773923B2Sep 26, 2017
Semiconductor device
FUJI ELECTRIC CO LTD10 citations84
US11335772B2May 17, 2022
Semiconductor device and method of manufacturing semiconductor device
FUJI ELECTRIC CO LTD2 citations73
US10867790B2Dec 15, 2020
Semiconductor device and method for manufacturing the same
FUJI ELECTRIC CO LTD2 citations73
US10756182B2Aug 25, 2020
Semiconductor device and method of manufacturing semiconductor device
FUJI ELECTRIC CO LTD1 citations73
US10707300B2Jul 7, 2020
Semiconductor device
FUJI ELECTRIC CO LTD3 citations73
US10490646B2Nov 26, 2019
Semiconductor device and semiconductor device manufacturing method
FUJI ELECTRIC CO LTD3 citations73
US10468254B2Nov 5, 2019
Semiconductor device and manufacturing method of semiconductor device
FUJI ELECTRIC CO LTD5 citations73
US10312331B2Jun 4, 2019
Semiconductor device, and method of manufacturing semiconductor device
FUJI ELECTRIC CO LTD1 citations73
US10176986B2Jan 8, 2019
Semiconductor device and method for manufacturing the same
FUJI ELECTRIC CO LTD2 citations73
US9954053B2Apr 24, 2018
Semiconductor device and method of manufacturing semiconductor device
FUJI ELECTRIC CO LTD5 citations73
US9673309B2Jun 6, 2017
Semiconductor device and method for fabricating semiconductor device
FUJI ELECTRIC CO LTD2 citations73
US9634130B2Apr 25, 2017
Semiconductor device
FUJI ELECTRIC CO LTD5 citations73
US9478614B2Oct 25, 2016
Semiconductor device
FUJI ELECTRIC CO LTD6 citations73
US10734230B2Aug 4, 2020
Insulated-gate bipolar transistor (IGBT) or diode including buffer region and lifetime killer region
FUJI ELECTRIC CO LTD4 citations72
US9324847B2Apr 26, 2016
Semiconductor device and semiconductor device manufacturing method
FUJI ELECTRIC CO LTD3 citations72
US10181508B2Jan 15, 2019
Semiconductor device and manufacturing method thereof
FUJI ELECTRIC CO LTD3 citations71
US12369370B2Jul 22, 2025
Semiconductor device and manufacturing method for semiconductor device
FUJI ELECTRIC CO LTD0 citations63
US11894426B2Feb 6, 2024
Semiconductor device and manufacturing method for semiconductor device
FUJI ELECTRIC CO LTD0 citations63
US9054154B2Jun 9, 2015
Semiconductor device
FUJI ELECTRIC CO LTD3 citations63
US12300726B2May 13, 2025
Semiconductor device and semiconductor device manufacturing method
FUJI ELECTRIC CO LTD0 citations62
US12256560B1Mar 18, 2025
IGBT with electric field relaxation doping profile
FUJI ELECTRIC CO LTD0 citations62
US12205993B2Jan 21, 2025
Semiconductor device, and method of manufacturing semiconductor device
FUJI ELECTRIC CO LTD0 citations62
US12015058B2Jun 18, 2024
Semiconductor device
FUJI ELECTRIC CO LTD0 citations62
US11942535B2Mar 26, 2024
Semiconductor device
FUJI ELECTRIC CO LTD1 citations62
US11823898B2Nov 21, 2023
Semiconductor device and method for manufacturing the same
FUJI ELECTRIC CO LTD0 citations62
US11824095B2Nov 21, 2023
Semiconductor device and semiconductor device manufacturing method
FUJI ELECTRIC CO LTD0 citations62
US11715771B2Aug 1, 2023
Semiconductor device and manufacturing method
FUJI ELECTRIC CO LTD0 citations62
US11646350B2May 9, 2023
Semiconductor device, and method of manufacturing semiconductor device
FUJI ELECTRIC CO LTD0 citations62
US11569092B2Jan 31, 2023
Semiconductor device
FUJI ELECTRIC CO LTD0 citations62
US11239324B2Feb 1, 2022
Semiconductor device and semiconductor device manufacturing method
FUJI ELECTRIC CO LTD0 citations62
US11183388B2Nov 23, 2021
Semiconductor device
FUJI ELECTRIC CO LTD0 citations62
US10950446B2Mar 16, 2021
Manufacturing method of semiconductor device
FUJI ELECTRIC CO LTD0 citations62
US10923570B2Feb 16, 2021
Manufacturing method for controlling carrier lifetimes in semiconductor substrates that includes injection and annealing
FUJI ELECTRIC CO LTD0 citations62
US10916628B2Feb 9, 2021
Semiconductor device
FUJI ELECTRIC CO LTD1 citations62
US10529800B2Jan 7, 2020
Semiconductor device
FUJI ELECTRIC CO LTD1 citations62
US12426352B2Sep 23, 2025
Semiconductor device and method for fabricating semiconductor device
FUJI ELECTRIC CO LTD0 citations61
US12261058B2Mar 25, 2025
Semiconductor device and manufacturing method of semiconductor device
FUJI ELECTRIC CO LTD0 citations61
US11830871B2Nov 28, 2023
Semiconductor device and method for fabricating semiconductor device
FUJI ELECTRIC CO LTD0 citations61
US11049941B2Jun 29, 2021
Semiconductor device
FUJI ELECTRIC CO LTD1 citations61
US12349453B2Jul 1, 2025
Semiconductor device comprising insulated-gate bipolar transistor
FUJI ELECTRIC CO LTD0 citations60
US11676960B2Jun 13, 2023
Semiconductor device
FUJI ELECTRIC CO LTD0 citations60
US10770453B2Sep 8, 2020
Semiconductor device having an emitter region and a contact region inside a mesa portion
FUJI ELECTRIC CO LTD1 citations60
US11088290B2Aug 10, 2021
Semiconductor apparatus
FUJI ELECTRIC CO LTD0 citations52
US10847609B2Nov 24, 2020
Method of manufacturing a semiconductor device in which a lifetime of carriers is controlled
FUJI ELECTRIC CO LTD0 citations52
ONOZAWA YUICHI
2 patentsShowing the top 50 of 78 patents by PatentIndex Score.