Inventor

Tsutomu Okawa

Inventor
Tokyo, JP

Overview

3→
Patents
1992–2004
Patent span
Electricity
Primary field (CPC H)

Patents· 3 as inventor

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

H04Mprimary
H04MTelephonic communication100%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1992Patents assigned to NEC AMERICA INC (1)· patent assignee history
1992–2004Based in Tokyo, JP· patent location history
2002–2004Patents assigned to NEC CORP (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NEC CORP22002–2004
NEC AMERICA INC11992
Locations
LocationPatentsSpan
Tokyo, JP31992–2004