P

Inventor

NISHI TETSUYA

JP47 patents
⚠️ This page may combine multiple inventors who share the name “NISHI TETSUYA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

FUJITSU LTD

25 patents
US6708000B1Mar 16, 2004

Photonic node, photonic nodes for transmission and reception, and method of restoring traffic upon occurrence of link failure in optical path network

FUJITSU LTD85 citations98
US6154583ANov 28, 2000

Optical switch

FUJITSU LTD53 citations96
US6134031AOct 17, 2000

Polarization control optical space switch

FUJITSU LTD45 citations96
US5949757ASep 7, 1999

Packet flow monitor and control system

FUJITSU LTD56 citations96
US6285473B1Sep 4, 2001

Polarization control optical space switch

FUJITSU LTD16 citations93
US6496289B1Dec 17, 2002

Optical exchanger

FUJITSU LTD22 citations92
US6433900B1Aug 13, 2002

Optical wavelength multiplexing system having a redundant configuration

FUJITSU LTD37 citations92
US6072610AJun 6, 2000

Optical transmission system

FUJITSU LTD33 citations92
US5974458AOct 26, 1999

Data transfer accounting device and method for performing an accounting process including an accounting information collecting process

FUJITSU LTD28 citations92
US7693092B2Apr 6, 2010

Multicast tree monitoring method and system in IP network

FUJITSU LTD8 citations84
US6741811B2May 25, 2004

Optical cross-connect device and system having the device

FUJITSU LTD14 citations84
US7043158B1May 9, 2006

Optical path crossconnect system with high expanding characteristic

FUJITSU LTD6 citations74
US6842554B2Jan 11, 2005

Optical cross-connect device and optical network

FUJITSU LTD8 citations74
US6792176B2Sep 14, 2004

Optical switch expanding method, optical switch, and optical crossconnecting apparatus

FUJITSU LTD7 citations74
US7287065B2Oct 23, 2007

Data distribution system and network cache apparatus, data distribution server, and access server used for the same

FUJITSU LTD6 citations63
US7171119B2Jan 30, 2007

Optical path cross-connect system with high expanding characteristic

FUJITSU LTD4 citations63
US7146102B2Dec 5, 2006

Optical cross-connect device

FUJITSU LTD3 citations63
US6768573B1Jul 27, 2004

Polarization control optical space switch

FUJITSU LTD4 citations63
US6643422B2Nov 4, 2003

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

FUJITSU LTD3 citations63
US8054755B2Nov 8, 2011

Measurement managing apparatus and communication system

FUJITSU LTD2 citations62
US7496055B2Feb 24, 2009

Layer 2 loop detection system

FUJITSU LTD5 citations56
US9244789B2Jan 26, 2016

Apparatus and method for specifying a failure part in a communication network

FUJITSU LTD0 citations52
US8990611B2Mar 24, 2015

Communication system and generating apparatus

FUJITSU LTD1 citations52
US7821952B2Oct 26, 2010

Loop locating apparatus and loop locating method in layer 3 network

FUJITSU LTD0 citations51
US9787533B2Oct 10, 2017

Obstruction determination device

FUJITSU LTD0 citations42

NISHI TETSUYA

7 patents

PANASONIC IP MAN CO LTD

6 patents

MITSUBISHI PAPER MILLS LTD

5 patents

SUMITOMO ELECTRIC INDUSTRIES

2 patents

YASUIE TAKESHI

1 patent

OLYMPUS CORP

1 patent