Inventor

OHE ETSUO

JP3 patents

Patents

3 patents

US4402211ASep 6, 1983

System for monitoring abnormality of oil-filled electric devices

HITACHI LTD56 citations92

US4470832ASep 11, 1984

Gas chromatographic apparatus

HITACHI LTD20 citations79

US4436654AMar 13, 1984

Fire-retardant insulating oils

HITACHI LTD5 citations56