Inventor

NAKATA TOHRU

JP4 patents

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

HITACHI POWDERED METALS

2 patents

US4552590ANov 12, 1985

Ferro-sintered alloys

HITACHI POWDERED METALS21 citations80

US4422875ADec 27, 1983

Ferro-sintered alloys

HITACHI POWDERED METALS19 citations80

CANON KK

2 patents

US5223972AJun 29, 1993

Optical amplifiers, optical communication systems networks using the amplifier and integrated optical nodes including the amplifier

CANON KK18 citations73

US5285059AFeb 8, 1994

Method for controlling a tunable filter and an apparatus therefor

CANON KK16 citations72