Inventor · disambiguated record
Eiji Sugawara
Also filed as: SUGAWARA EIJI
13 granted patents·7 pending applications·133 citations·filing 1988–2016
90Inventor score
Top patents by PatentIndex Score
20 records- 0178US8280244B2Optical ring network systemSUGAWARA EIJI·Filed 2010·Granted Oct 2, 2012·6 cites·8 claims
- 0265US7986619B2Packet network systemFUJITSU LTD·Filed 2008·Granted Jul 26, 2011·3 cites·17 claims
- 0363US5555248ATandem connection maintenance systemFUJITU LIMITED·Filed 1994·Granted Sep 10, 1996·28 cites·18 claims
- 0462US6021112APath switching ring control apparatus in a synchronous (SDH) network that includes an asynchronous (PDH) subnetworkFUJITSU LTD·Filed 1997·Granted Feb 1, 2000·28 cites·9 claims
- 0556US5313456AData link protecting systemFUJITSU LTD·Filed 1992·Granted May 17, 1994·32 cites·6 claims
- 0651US5535251ASystem for synchronizing real time clock by transmitted real time informationFUJITSU LTD·Filed 1994·Granted Jul 9, 1996·16 cites·11 claims
- 0745US8605576B2Communication network system, data transmission method, and node apparatusTAKUWA KENYA·Filed 2011·Granted Dec 10, 2013·1 cites·3 claims
- 0844US9397882B2Packet transport network systemFUJITSU LTD·Filed 2014·Granted Jul 19, 2016·0 cites·7 claims
- 0941US2004190443A1Transmission apparatus and concatenation setting methodFUJITSU LTD·Filed 2004·Application pending·0 cites
- 1038US8705373B2Apparatus and method for packet forwardingKITAMORI KATSUYA·Filed 2011·Granted Apr 22, 2014·0 cites·8 claims
- 1137US8971172B2Network and fault recovery methodSUGAWARA EIJI·Filed 2012·Granted Mar 3, 2015·0 cites·8 claims
- 1237US2011292935A1Relay device, control information generating method, control and information generation programTANEOKA SUSUMU·Filed 2011·Application pending·0 cites
- 1337US2011292941A1Transmitter and control information configuration methodYATSU KOICHI·Filed 2011·Application pending·0 cites
- 1436US2003058789A1SDH ring networkFiled 2002·Application pending·0 cites
- 1534US4896317ASupervisory system for a primary group digital transmission lineFUJITSU LTD·Filed 1988·Granted Jan 23, 1990·6 cites·4 claims
- 1633US5619189ACommunication system having two opposed data processing units each having function of monitoring the other data processing unitFUJITSU LTD·Filed 1995·Granted Apr 8, 1997·8 cites·11 claims
- 1733US5367567ASubscriber apparatus with ringer generator for sending ringer signal to subscriber lineFUJITSU LTD·Filed 1992·Granted Nov 22, 1994·5 cites·8 claims
- 1833US2012140679A1Path setting method and transmission deviceINABA TORU·Filed 2011·Application pending·0 cites
- 1929US2016366048A1Communication system, node and signal path control method in communication systemFUJITSU LTD·Filed 2016·Application pending·0 cites
- 2027US2016164760A1System and method for measuring transmission time difference of signals transmitted through different routesFUJITSU LTD·Filed 2015·Application pending·0 cites
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