Inventor
OTAKE HIROTAKA
JP47 patents
⚠️ This page may combine multiple inventors who share the name “OTAKE HIROTAKA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ROHM CO LTD
44 patentsUS7960782B2Jun 14, 2011
Nitride semiconductor device and method for producing nitride semiconductor device
ROHM CO LTD11 citations84
US7750369B2Jul 6, 2010
Nitride semiconductor device
ROHM CO LTD18 citations84
US9819275B2Nov 14, 2017
Power supply device
ROHM CO LTD13 citations83
US9691673B2Jun 27, 2017
Power module semiconductor device
ROHM CO LTD5 citations83
US9147622B2Sep 29, 2015
Power module semiconductor device
ROHM CO LTD8 citations83
US9819338B2Nov 14, 2017
Power circuit and power module using MISFET having control circuit disposed between gate and source
ROHM CO LTD8 citations82
US11817376B2Nov 14, 2023
Semiconductor device
ROHM CO LTD1 citations73
US11600721B2Mar 7, 2023
Nitride semiconductor apparatus and manufacturing method thereof
ROHM CO LTD2 citations73
US11245342B2Feb 8, 2022
AC power supply device
ROHM CO LTD2 citations73
US10734911B2Aug 4, 2020
Power module including multiple signal wiring patterns disposed on an insulating substrate
ROHM CO LTD4 citations73
US10418895B2Sep 17, 2019
Power module and power circuit
ROHM CO LTD6 citations73
US10917080B2Feb 9, 2021
Gate drive circuit
ROHM CO LTD2 citations72
US10908204B2Feb 2, 2021
Method for measuring current-voltage characteristic
ROHM CO LTD2 citations72
US10901024B2Jan 26, 2021
Method for measuring current-voltage characteristic
ROHM CO LTD3 citations72
US10749520B2Aug 18, 2020
Power circuit and power module using MISFET having control circuit disposed between gate and source
ROHM CO LTD1 citations71
US10320380B2Jun 11, 2019
Power circuit and power module using MISFET having control circuit disposed between gate and source
ROHM CO LTD3 citations71
US8039872B2Oct 18, 2011
Nitride semiconductor device including a group III nitride semiconductor structure
ROHM CO LTD5 citations63
US12211839B2Jan 28, 2025
Nitride semiconductor device
ROHM CO LTD0 citations62
US12148683B2Nov 19, 2024
Semiconductor device
ROHM CO LTD0 citations62
US12094826B2Sep 17, 2024
Semiconductor device
ROHM CO LTD0 citations62
US12038468B2Jul 16, 2024
Method for measuring current-voltage characteristic
ROHM CO LTD0 citations62
US11881479B2Jan 23, 2024
Nitride semiconductor device
ROHM CO LTD0 citations62
US11705513B2Jul 18, 2023
Nitride semiconductor device
ROHM CO LTD0 citations62
US11476197B2Oct 18, 2022
Semiconductor device
ROHM CO LTD0 citations62
US11444009B2Sep 13, 2022
Semiconductor device
ROHM CO LTD0 citations62
US11437473B2Sep 6, 2022
Nitride semiconductor device and method of manufacturing the same
ROHM CO LTD0 citations62
US11398769B2Jul 26, 2022
Semiconductor device comprising switching elements and capacitors
ROHM CO LTD1 citations62
US11374121B2Jun 28, 2022
Nitride semiconductor device
ROHM CO LTD0 citations62
US11302690B2Apr 12, 2022
Nitride semiconductor device
ROHM CO LTD0 citations62
US12046532B2Jul 23, 2024
Power module and fabrication method of the same, graphite plate, and power supply equipment
ROHM CO LTD0 citations61
US11367669B2Jun 21, 2022
Power module and fabrication method of the same, graphite plate, and power supply equipment
ROHM CO LTD0 citations61
US12348220B2Jul 1, 2025
Nitride semiconductor module
ROHM CO LTD0 citations52
US12550356B2Feb 10, 2026
Nitride semiconductor device and method for manufacturing same
ROHM CO LTD0 citations51
US12272742B2Apr 8, 2025
Nitride semiconductor device
ROHM CO LTD0 citations51
US12225738B2Feb 11, 2025
Method for manufacturing nitride semiconductor device and nitride semiconductor device
ROHM CO LTD0 citations51
US12199173B2Jan 14, 2025
Nitride semiconductor device
ROHM CO LTD0 citations51
US11908927B2Feb 20, 2024
Nitride semiconductor device
ROHM CO LTD0 citations51
US11764668B2Sep 19, 2023
Control device for controlling an electric power conversion device incorporating a bidirectional inverter
ROHM CO LTD0 citations51
US11482479B2Oct 25, 2022
Semiconductor device
ROHM CO LTD0 citations51
US11462635B2Oct 4, 2022
Nitride semiconductor device and method of manufacturing the same
ROHM CO LTD0 citations51
US10886859B2Jan 5, 2021
Alternating-current power supply device with windings wound in different directions
ROHM CO LTD0 citations51
US12126263B2Oct 22, 2024
Power conversion circuit, power module, converter, and inverter
ROHM CO LTD0 citations50
US8035131B2Oct 11, 2011
Method for forming a nitride semiconductor laminated structure and method for manufacturing a nitride semiconductor element
ROHM CO LTD0 citations46
US10819247B2Oct 27, 2020
Direct-current power supply device with primary and secondary magnetic cores
ROHM CO LTD0 citations42