Inventor

URAKAWA FUMIO

JP3 patents

Patents

3 patents

US10481184B2Nov 19, 2019

Input-voltage-abnormality detection method and power source device

SUMITOMO ELECTRIC INDUSTRIES1 citations56

US11101660B2Aug 24, 2021

Storage battery system and power display device

SUMITOMO ELECTRIC INDUSTRIES0 citations55

US10476259B2Nov 12, 2019

Power conversion device and method for determining operational state of breaking device

SUMITOMO ELECTRIC INDUSTRIES0 citations34