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Inventor

Toyomi Obikawa

Inventor
Kawasaki, JP

Overview

4→
Patents
1997–2006
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.

H04Bprimary
H04BTransmission38%
H04LTransmission of digital information, e.g. telegraphic communication38%
H01FMagnets13%
H04JMultiplex communication13%
PatentTitleYear
7,019,611'Modem coupling circuit for power-line carrier'20066,002,724'Transmission apparatus and control method therefor'19995,896,420'Transmission apparatus having echo cancellation facility'19995,631,923'Two-wire full-duplex modem'1997

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1997–1999Patents assigned to FUJITSU LTD (3)· patent assignee history
1997–1999Based in Kawasaki, JP· patent location history
2006Patents assigned to NEC TOKIN CORP (1)· patent assignee history
2006Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
FUJITSU LTD31997–1999
NEC TOKIN CORP12006
Locations
LocationPatentsSpan
Kawasaki, JP31997–1999
Tokyo, JP12006