P

Inventor

NAKAJIMA ICHIRO

JP55 patents
⚠️ This page may combine multiple inventors who share the name “NAKAJIMA ICHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

FUJITSU LTD

20 patents
US6404940B1Jun 11, 2002

Optical cross connect apparatus and optical network

FUJITSU LTD58 citations96
US6154583ANov 28, 2000

Optical switch

FUJITSU LTD53 citations96
US6522803B1Feb 18, 2003

Optical cross-connect equipment

FUJITSU LTD42 citations92
US6496289B1Dec 17, 2002

Optical exchanger

FUJITSU LTD22 citations92
US6433900B1Aug 13, 2002

Optical wavelength multiplexing system having a redundant configuration

FUJITSU LTD37 citations92
US6741811B2May 25, 2004

Optical cross-connect device and system having the device

FUJITSU LTD14 citations84
US7522839B2Apr 21, 2009

Method of upgrading optical node, and an optical node apparatus

FUJITSU LTD8 citations83
US6987903B2Jan 17, 2006

Optical transmission network, optical transmission apparatus, dispersion compensator arrangement calculation apparatus and dispersion compensator arrangement calculation method

FUJITSU LTD7 citations74
US6718081B2Apr 6, 2004

Optical switch

FUJITSU LTD7 citations74
US4037209AJul 19, 1977

Data processing system for converting from logical addresses to physical addresses

FUJITSU LTD25 citations74
US9577781B2Feb 21, 2017

Optical transmission apparatus and optical transmission control method

FUJITSU LTD2 citations72
US10782589B2Sep 22, 2020

Wavelength conversion apparatus, optical parametric amplifier, transmission apparatus, and optical transmission system

FUJITSU LTD2 citations69
US7336870B2Feb 26, 2008

Optical transmission system

FUJITSU LTD3 citations63
US7286758B2Oct 23, 2007

Method for switching transmission route, and optical transmission device

FUJITSU LTD6 citations63
US7110674B2Sep 19, 2006

Optical add/drop device

FUJITSU LTD4 citations63
US6643422B2Nov 4, 2003

Optical switch changeover controlling method, optical node device and optical switch system

FUJITSU LTD3 citations63
US7650072B2Jan 19, 2010

Method of upgrading optical node, and an optical node apparatus

FUJITSU LTD4 citations61
US9800347B2Oct 24, 2017

Optical transmission device, optical transmission system, and optical transmission control method

FUJITSU LTD1 citations51
US9467244B2Oct 11, 2016

Transmission apparatus and transmission system

FUJITSU LTD0 citations51
US9332326B2May 3, 2016

Optical transmission device and monitoring method of optical signal

FUJITSU LTD0 citations46

SOFMAP FUTURE DESIGN INC

11 patents

JAPAN STEEL WORKS LTD

4 patents

SONY CORP

3 patents

DAINICHI KK

2 patents

NAKAJIMA ICHIRO

2 patents

KANEKA CORP

1 patent

DREAM TECHNOLOGIES CORP

1 patent

SOFMAP FUTURE DESIGN CO LTD

1 patent

BRIDGESTONE CORP

1 patent

TAKEYAMA TOMOAKI

1 patent

NOMA TAKESHI

1 patent

ABE KENSAKU

1 patent

SHOJI TAKUMA

1 patent

Showing the top 50 of 55 patents by PatentIndex Score.