Inventor

Kenji Akiba

Inventor

Fukushima, JP

Overview

6→

Patents

1998–2002

Patent span

Physics

Primary field (CPC G)

Patents· 6 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G02Bprimary

G02BOptical elements, systems or apparatus75%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein13%

H04JMultiplex communication13%

PatentTitleYear

6,466,715'Multiplexer/demultiplexer for WDM optical signals'2002 6,222,956'Optical wavelength multiplexer/demultiplexer'2001 5,982,960'Optical wavelength multiplexer/demultiplexer'1999 5,940,555'Optical multiplexer/demultiplexer'1999 5,841,919'Optical wavelength multiplexer/demultiplexer'1998 5,812,709'Optical device having switching function'1998

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1998–2002Patents assigned to HITACHI CABLE (6)· patent assignee history

1998Based in Ibaraki, JP· patent location history

1999–2002Based in Fukushima, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI CABLE	6	1998–2002

Locations

Location	Patents	Span
Fukushima, JP	4	1999–2002
Ibaraki, JP	2	1998