Inventor
ISHIMATSU YUJI
JP20 patents
⚠️ This page may combine multiple inventors who share the name “ISHIMATSU YUJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ROHM CO LTD
19 patentsUS11437354B2Sep 6, 2022
Semiconductor device
ROHM CO LTD6 citations84
US11398818B2Jul 26, 2022
Semiconductor device
ROHM CO LTD5 citations83
US9729150B2Aug 8, 2017
Power semiconductor drive circuit, power semiconductor circuit, and power module circuit device
ROHM CO LTD8 citations83
US12052014B2Jul 30, 2024
Semiconductor device
ROHM CO LTD2 citations72
US10897254B2Jan 19, 2021
Power semiconductor drive circuit, power semiconductor circuit, and power module circuit device
ROHM CO LTD1 citations72
US11682975B2Jun 20, 2023
Power conversion device
ROHM CO LTD3 citations71
US11451153B2Sep 20, 2022
Power conversion device
ROHM CO LTD2 citations71
US10679928B2Jun 9, 2020
Power module and motor drive circuit
ROHM CO LTD1 citations62
US12456691B2Oct 28, 2025
Semiconductor device
ROHM CO LTD0 citations61
US12316309B2May 27, 2025
Semiconductor device
ROHM CO LTD0 citations61
US12191289B2Jan 7, 2025
Semiconductor device
ROHM CO LTD0 citations61
US11804478B2Oct 31, 2023
Semiconductor device
ROHM CO LTD0 citations61
US11070202B2Jul 20, 2021
Signal transmission circuit, switch driving device, and power module
ROHM CO LTD1 citations61
US10832996B2Nov 10, 2020
Power module and motor drive circuit
ROHM CO LTD0 citations52
US10224929B2Mar 5, 2019
Power semiconductor drive circuit, power semiconductor circuit, and power module circuit device
ROHM CO LTD0 citations51
US12599006B2Apr 7, 2026
Electronic device
ROHM CO LTD0 citations50
US12564073B2Feb 24, 2026
Control chip for leadframe package
ROHM CO LTD0 citations50
US12463118B2Nov 4, 2025
Semiconductor device
ROHM CO LTD0 citations50
US12167536B2Dec 10, 2024
Electronic device
ROHM CO LTD0 citations50