Inventor
Motohiro Kokumai
Inventor
Yokohama, JP
Overview
Patents· 5 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Bprimary
H04BTransmission67%
H04JMultiplex communication17%
H04LTransmission of digital information, e.g. telegraphic communication17%
PatentTitleYear
5,311,503'Terminal apparatus for full-duplex data transmission having an echo canceller'19945,097,488'Transmission apparatus and method'19925,018,134'Method for cancelling echo in a transmitter and an apparatus therefor'19914,896,318'Method for cancelling echo in a transmitter and an apparatus therefor'19904,868,874'Echo canceller'1989Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1989–1994Patents assigned to HITACHI LTD (5)· patent assignee history
1989Based in Kokubunji, JP· patent location history
1990–1994Based in Yokohama, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI LTD | 5 | 1989–1994 |
Locations
| Location | Patents | Span |
|---|---|---|
| Yokohama, JP | 4 | 1990–1994 |
| Kokubunji, JP | 1 | 1989 |