Inventor

Masayoshi Hiraguchi

Inventor

Tokyo, JP

Overview

3→

Patents

1988–1993

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.

H04Lprimary

H04LTransmission of digital information, e.g. telegraphic communication50%

H04BTransmission25%

Y02DClimate change mitigation technologies in information and communication technologies [ict], i.e. information and communication technologies aiming at the reduction of their own energy use25%

PatentTitleYear

5,206,888'Start-stop synchronous communication speed detecting apparatus'1993 4,935,919'Full duplex modem having two echo cancellers for a near end echo and a far end echo'1990 4,792,940'Automatic retrain method for a full duplex modem having an echo canceller and an equalizer'1988

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1988–1993Patents assigned to NEC CORP (3)· patent assignee history

1988–1993Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
NEC CORP	3	1988–1993

Locations

Location	Patents	Span
Tokyo, JP	3	1988–1993