Inventor
ONUMA YUSAKU
JP11 patents
⚠️ This page may combine multiple inventors who share the name “ONUMA YUSAKU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD
9 patentsUS11870384B2Jan 9, 2024
Speed calculation device and power conversion device
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD0 citations61
US11575338B2Feb 7, 2023
Power conversion device
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD0 citations60
US11437944B2Sep 6, 2022
Power conversion device
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD0 citations60
US11424707B2Aug 23, 2022
Power conversion apparatus
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD0 citations60
US10903767B2Jan 26, 2021
Synchronous motor control apparatus
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD0 citations59
US11273712B2Mar 15, 2022
AC electric motor control device
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD0 citations57
US12341447B2Jun 24, 2025
Power conversion device
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD0 citations50
US12088228B2Sep 10, 2024
Power conversion device and control method thereof
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD0 citations49
US11909341B2Feb 20, 2024
Power conversion device and method for controlling same
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD0 citations49