Inventor

KUNIHIRO NAOKI

JP4 patents

⚠️ This page may combine multiple inventors who share the name “KUNIHIRO NAOKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HITACHI LTD

2 patents

US10177621B2Jan 8, 2019

Rotating electric machine or wind power generation system

HITACHI LTD8 citations82

US11701971B2Jul 18, 2023

Three-phase AC motor drive device, rail vehicle equipped with same, and three-phase AC motor drive method

HITACHI LTD0 citations49

FUJI ELECTRIC CO LTD

2 patents

US5475314ADec 12, 1995

Method for estimating natural frequency of distribution system

FUJI ELECTRIC CO LTD0 citations48

US5473255ADec 5, 1995

Apparatus for estimating natural frequency of distribution system

FUJI ELECTRIC CO LTD1 citations48