Inventor
Toru Kazawa
Inventor
Kokubunji, JP
Overview
Patents· 13 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Bprimary
H04BTransmission36%
H04JMultiplex communication36%
H04QSelecting24%
H04LTransmission of digital information, e.g. telegraphic communication3%
PatentTitleYear
7,616,567'Shaping apparatus, communication node and flow control method for controlling bandwidth of variable length frames'20097,292,785'Optical transmission system constructing method and system'20077,167,652'Optical transmission system constructing method and system'20076,728,489'Optical transmission system constructing method and system'20046,266,169'Optical transmission equipment which transmits an amplified optical data signal and an optical surveillance signal'20016,018,405'Optical transmission equipment which transmits an amplified optical data signal and an optical surveillance signal'20006,005,699'Optical wavelength multiplexing system'19995,875,046'Optical repeater and optical transmitter'19995,861,972'Optical multiplex transmission equipment and method'19995,812,289'Optical repeater and optical transmitter'19985,739,932'Optical transmission system constructing method and system'19985,671,074'Optical multiplex transmission equipment and method'19975,555,477'Optical transmission system constructing method and system'1996Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1996–2007Patents assigned to HITACHI LTD (12)· patent assignee history
1996–2009Based in Kokubunji, JP· patent location history
2009Patents assigned to HITACHI COMM TECH LTD (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI LTD | 12 | 1996–2007 |
| HITACHI COMM TECH LTD | 1 | 2009 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kokubunji, JP | 13 | 1996–2009 |