Inventor
Sunao Kakizaki
Inventor
Kawasaki, JP
Overview
Patents· 9 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Qprimary
H04QSelecting40%
H04BTransmission25%
H04JMultiplex communication25%
G02BOptical elements, systems or apparatus10%
PatentTitleYear
7,542,672'Optical switching apparatus with optical reflection monitor and reflection monitoring system'20097,356,257'Optical switching apparatus and optical communication network system'20087,206,475'Optical switching apparatus, optical transmission system and method of setting up for optical signal route'20076,975,811'Optical one-to-one protection switching apparatus'20056,933,852'Optical switching apparatus and optical communication network system'20056,839,480'Optical switching apparatus, optical transmission system and method of setting up for optical signal route'20056,778,725'Optical switching apparatus, optical transmission system and method of setting up for optical signal route'20046,434,286'Optical signal switching apparatus'20025,627,923'Three-dimensional opto-electric integrated circuit using optical wiring'1997Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1997–2009Patents assigned to HITACHI LTD (9)· patent assignee history
1997Based in Dublin, IE· patent location history
2002–2009Based in Kawasaki, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI LTD | 9 | 1997–2009 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kawasaki, JP | 8 | 2002–2009 |
| Dublin, IE | 1 | 1997 |