Inventor · disambiguated record
Yuji Tochio
Also filed as: TOCHIO YUJI
38 granted patents·11 pending applications·242 citations·filing 1997–2024
97Inventor score
Top patents by PatentIndex Score
49 records- 0190US6795656B1Optical transmission circuit using a semiconductor laserFUJITSU LTD·Filed 2000·Granted Sep 21, 2004·37 cites·33 claims
- 0286US8873380B2System and method for setting redundant path segments in a multi-ring communication networkTOCHIO YUJI·Filed 2012·Granted Oct 28, 2014·10 cites·3 claims
- 0385US9075769B2Communication control device and communication control methodFUJITSU LTD·Filed 2013·Granted Jul 7, 2015·8 cites·5 claims
- 0482US6429976B1Optical switch using tilt mirrorsFUJITSU LTD·Filed 2001·Granted Aug 6, 2002·25 cites·11 claims
- 0581US7961602B2Method and device using a backup communication path to transmit excess trafficFUJITSU LTD·Filed 2007·Granted Jun 14, 2011·10 cites·16 claims
- 0679US6711314B1Optical switch control method and apparatus thereofFUJITSU LTD·Filed 2001·Granted Mar 23, 2004·21 cites·24 claims
- 0778US9391694B2Protection path providing method and transmission deviceFUJITSU LTD·Filed 2014·Granted Jul 12, 2016·4 cites·8 claims
- 0877US8208469B2Communication system and apparatusTOCHIO YUJI·Filed 2009·Granted Jun 26, 2012·7 cites·15 claims
- 0974US6563613B1Optical subscriber network, and delay measurement methodFUJITSU LTD·Filed 1998·Granted May 13, 2003·49 cites·16 claims
- 1073US6968102B2Node device of optical ring networkFUJITSU LTD·Filed 2005·Granted Nov 22, 2005·5 cites·10 claims
- 1169US10917350B2Transmission device and network systemFUJITSU LTD·Filed 2019·Granted Feb 9, 2021·1 cites·19 claims
- 1267US7158551B2Driver circuit and driving method for semiconductor laserFUJITSU LTD·Filed 2001·Granted Jan 2, 2007·8 cites·16 claims
- 1366US8174963B2Data relay apparatus and failure recovery methodTOCHIO YUJI·Filed 2005·Granted May 8, 2012·3 cites·18 claims
- 1465US10009262B2Transmission apparatus and redundancy methodFUJITSU LTD·Filed 2015·Granted Jun 26, 2018·1 cites·5 claims
- 1565US7239773B2Optical-switch testing apparatus, optical-signal switching apparatus, optical-switch testing method, and control method for optical-signal switchingFUJITSU LTD·Filed 2004·Granted Jul 3, 2007·7 cites·9 claims
- 1663US7122786B2Controlling apparatus and controlling method of optical switching deviceFUJITSU LTD·Filed 2001·Granted Oct 17, 2006·8 cites·25 claims
- 1762US9264283B2Method of accommodating signals, frame generation apparatus, frame reception apparatus, and transmission systemFUJITSU LTD·Filed 2013·Granted Feb 16, 2016·1 cites·17 claims
- 1860US8737201B2Data relay apparatus, and ring-type communication systemTOCHIO YUJI·Filed 2010·Granted May 27, 2014·1 cites·11 claims
- 1960US7821971B2Protection providing method and customer edge apparatusFUJITSU LTD·Filed 2008·Granted Oct 26, 2010·1 cites·8 claims
- 2059US8441923B2Communication path providing method and communication apparatusTOCHIO YUJI·Filed 2010·Granted May 14, 2013·1 cites·12 claims
- 2159US7398019B2Control apparatus and control method of optical signal exchangerFUJITSU LTD·Filed 2003·Granted Jul 8, 2008·6 cites·22 claims
- 2258US7912329B2Optical-switch testing apparatus, optical-signal switching apparatus, optical-switch testing method, and control method for optical-signal switchingFUJITSU LTD·Filed 2009·Granted Mar 22, 2011·1 cites·5 claims
- 2358US2024396634A1Optical transmission device and optical transmission systemFUJITSU LTD·Filed 2024·Application pending·0 cites
- 2455US10742543B2Transmission apparatus and redundancy methodFUJITSU LTD·Filed 2018·Granted Aug 11, 2020·0 cites·4 claims
- 2554US10848840B2Communication apparatus and signal relay methodFUJITSU LTD·Filed 2019·Granted Nov 24, 2020·0 cites·8 claims
- 2654US6760147B2Control apparatus and control method of optical signal exchangerFUJITSU LTD·Filed 2003·Granted Jul 6, 2004·4 cites·15 claims
- 2751US7929451B2Switch and packet forwarding methodFUJITSU LTD·Filed 2008·Granted Apr 19, 2011·0 cites·12 claims
- 2851US6215567B1Optical transmitting apparatus and optical receiving apparatus, and optical communicating methodFUJITSU LTD·Filed 1998·Granted Apr 10, 2001·15 cites·18 claims
- 2950US11923968B2Optical transmission device, optical transmission system and method of updating the optical transmission deviceFUJITSU LTD·Filed 2021·Granted Mar 5, 2024·0 cites·5 claims
- 3050US7596290B2Optical-switch testing apparatus, optical-signal switching apparatus, optical-switch testing method, and control method for optical-signal switchingFUJITSU LTD·Filed 2007·Granted Sep 29, 2009·0 cites·9 claims
- 3148US7907516B2Node setting apparatus, network system, node setting method, and computer productFUJITSU LTD·Filed 2007·Granted Mar 15, 2011·0 cites·13 claims
- 3248US2010074102A1Transmission device and transmission methodFUJITSU LTD·Filed 2009·Application pending·0 cites
- 3348US2009196202A1Transmitting apparatus and path setting methodFUJITSU LTD·Filed 2009·Application pending·0 cites
- 3448US2009323521A1Transmission method and transmission apparatus in ring networkFUJITSU LTD·Filed 2009·Application pending·0 cites
- 3546US8432792B2Node apparatus, ring network, and protection path bandwidth control methodFUJII YASUKI·Filed 2009·Granted Apr 30, 2013·0 cites·5 claims
- 3645US9716650B2Communication system and transfer apparatusFUJITSU LTD·Filed 2014·Granted Jul 25, 2017·0 cites·3 claims
- 3745US9154326B2Transmission apparatus, failure recovery method, and network systemTOCHIO YUJI·Filed 2012·Granted Oct 6, 2015·0 cites·9 claims
- 3845US2022038346A1Transmission device and transmission methodFUJITSU LTD·Filed 2021·Application pending·0 cites
- 3941US9369786B2Optical transmission device and optical transmission network systemTOCHIO YUJI·Filed 2012·Granted Jun 14, 2016·0 cites·9 claims
- 4041US8917592B2Communication apparatus, system, and methodTOCHIO YUJI·Filed 2011·Granted Dec 23, 2014·0 cites·13 claims
- 4141US2013163982A1Transmission apparatusFUJITSU LTD·Filed 2012·Application pending·0 cites
- 4240US2013170832A1Switching deviceTOCHIO YUJI·Filed 2012·Application pending·0 cites
- 4339US9048966B2Optical transmission apparatusTOCHIO YUJI·Filed 2011·Granted Jun 2, 2015·0 cites·6 claims
- 4439US2017302473A1Method of transmission of a signal and ring networkFUJITSU LTD·Filed 2017·Application pending·0 cites
- 4538US2017034043A1Protection method, communication system, and end nodeFUJITSU LTD·Filed 2016·Application pending·0 cites
- 4638US2017111186A1Transmission apparatus and transmission systemFUJITSU LTD·Filed 2016·Application pending·0 cites
- 4736US6069892AFixed-length cell transmission system, fixed-length cell transmitting unit, and fixed-length cell receiving unitFUJITSU LTD·Filed 1997·Granted May 30, 2000·8 cites·17 claims
- 4836US2016119221A1Transmission device and method for establishing path in multilayer networkFUJITSU LTD·Filed 2015·Application pending·0 cites
- 4935US7467171B2Digital filter deviceFUJITSU LTD·Filed 2003·Granted Dec 16, 2008·0 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →