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Inventor

Tohru Nakata

Inventor
Matsudo, JP

Overview

4→
Patents
1983–1994
Patent span
Electricity
Primary field (CPC H)

Patents· 4 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

C22Cprimary
C22CAlloys29%
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light29%
Y10TTechnical subjects covered by former us classification29%
H04BTransmission14%
PatentTitleYear
5,285,059'Method for controlling a tunable filter and an apparatus therefor'19945,223,972'Optical amplifiers, optical communication systems networks using the amplifier and integrated optical nodes including the amplifier'19934,552,590'Ferro-sintered alloys'19854,422,875'Ferro-sintered alloys'1983

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1983–1985Patents assigned to HITACHI POWDERED METALS (2)· patent assignee history
1983–1985Based in Matsudo, JP· patent location history
1993–1994Patents assigned to CANON KK (2)· patent assignee history
1993Based in Yokohama, JP· patent location history
1994Based in Ebina, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CANON KK21993–1994
HITACHI POWDERED METALS21983–1985
Locations
LocationPatentsSpan
Matsudo, JP21983–1985
Ebina, JP11994
Yokohama, JP11993