Inventor · disambiguated record
Yasuhiko Aoki
Also filed as: AOKI YASUHIKO
57 granted patents·8 pending applications·273 citations·filing 1974–2017
98Inventor score
Files withFUJITSU LTD50AOKI YASUHIKO5FUJITSU NETWORK COMMUNICATIONS2KAI YUTAKA2SUMITOMO CHEMICAL CO2
Top patents by PatentIndex Score
65 records- 0193US7317873B2Optical packet switching systemFUJITSU LTD·Filed 2005·Granted Jan 8, 2008·30 cites·17 claims
- 0292US9083459B2Optical transmission system, method of testing optical transmission system, and non-transitory computer-readable mediumFUJITSU LTD·Filed 2013·Granted Jul 14, 2015·10 cites·5 claims
- 0392US7764881B2Optical apparatus and optical cross connect apparatusFUJITSU LTD·Filed 2005·Granted Jul 27, 2010·19 cites·14 claims
- 0491US8965202B2Optical power monitor, optical power control system and optical power monitor methodFUJITSU LTD·Filed 2012·Granted Feb 24, 2015·10 cites·12 claims
- 0589US8660425B2Optical transmitting device and optical receiving deviceAOKI YASUHIKO·Filed 2011·Granted Feb 25, 2014·12 cites·7 claims
- 0687US9560531B1Joint wireless and fixed network optimization for heterogeneous cellular networksCHANG RUI CHU·Filed 2015·Granted Jan 31, 2017·14 cites·10 claims
- 0787US9350479B2Apparatus and method for monitoring wavelength tunable optical filterFUJITSU LTD·Filed 2013·Granted May 24, 2016·7 cites·7 claims
- 0887US8331793B2Optical transmission apparatus and methodTAKEUCHI OSAMU·Filed 2010·Granted Dec 11, 2012·9 cites·16 claims
- 0986US7672585B2Optical switch systemFUJITSU LTD·Filed 2006·Granted Mar 2, 2010·13 cites·10 claims
- 1084US9413455B2Apparatus and method for creating calibration coefficient used to monitor optical signal-to-noise ratioFUJITSU LTD·Filed 2014·Granted Aug 9, 2016·7 cites·15 claims
- 1182US9225459B2Optical transmission system, optical transmission apparatus, signal conditioning program, and signal conditioning methodFUJITSU LTD·Filed 2012·Granted Dec 29, 2015·6 cites·19 claims
- 1282US6879434B2Distributed raman amplifier for optical network and methodFUJITSU NETWORK COMMUNICATIONS·Filed 2002·Granted Apr 12, 2005·17 cites·34 claims
- 1380US9887774B2Device and method for monitoring transmission characteristicsFUJITSU LTD·Filed 2017·Granted Feb 6, 2018·4 cites·6 claims
- 1479US10187172B2Optical transport apparatus and optical-wavelength defragmenting methodFUJITSU LTD·Filed 2017·Granted Jan 22, 2019·3 cites·6 claims
- 1579US8170416B2Optical switching deviceKAI YUTAKA·Filed 2008·Granted May 1, 2012·7 cites·8 claims
- 1679US4014895AMethod for synthesis of optically active thiolactonesSUMITOMO CHEMICAL CO·Filed 1974·Granted Mar 29, 1977·11 cites·8 claims
- 1778US9143242B2Optical signal demodulator, optical signal demodulating method, and optical add-drop multiplexerFUJITSU LTD·Filed 2013·Granted Sep 22, 2015·4 cites·15 claims
- 1877US9363022B2Optical transmission apparatus and analog-to-digital conversion apparatusAOKI YASUHIKO·Filed 2011·Granted Jun 7, 2016·6 cites·9 claims
- 1977US8521030B2Transceiver apparatus, communication control method, and concentratorAOKI YASUHIKO·Filed 2010·Granted Aug 27, 2013·4 cites·12 claims
- 2076US7369765B2Optical network with selective mode switchingFUJITSU LTD·Filed 2004·Granted May 6, 2008·12 cites·21 claims
- 2174US9906296B2Network controller and signal quality estimating methodFUJITSU LTD·Filed 2016·Granted Feb 27, 2018·2 cites·10 claims
- 2273US9705604B2Communication device and wavelength adjustment methodFUJITSU LTD·Filed 2016·Granted Jul 11, 2017·2 cites·15 claims
- 2373US7462812B2Optical switch apparatus and optical switching systemFUJITSU LTD·Filed 2008·Granted Dec 9, 2008·4 cites·3 claims
- 2473US7447446B2Light source apparatus, and method for switching redundancy of the light sourceFUJITSU LTD·Filed 2004·Granted Nov 4, 2008·10 cites·14 claims
- 2571US9496953B2Device and method for monitoring optical signal quality, and optical transmission deviceFUJITSU LTD·Filed 2014·Granted Nov 15, 2016·2 cites·19 claims
- 2671US8705974B2Optical transmission system and optical transmission methodKOGANEI YOHEI·Filed 2012·Granted Apr 22, 2014·4 cites·8 claims
- 2771US8019228B2Optical switching transmission system with timing correctionFUJITSU LTD·Filed 2007·Granted Sep 13, 2011·4 cites·2 claims
- 2868US9559771B2Optical transmission device, node device, optical transmission method, and optical transmission systemFUJITSU LTD·Filed 2013·Granted Jan 31, 2017·2 cites·9 claims
- 2968US7853147B2Information processing system, calculation node, and control method of information processing systemFUJITSU LTD·Filed 2005·Granted Dec 14, 2010·4 cites·4 claims
- 3065US10200132B2Optical communication system, transmission station, and method of optical communicationFUJITSU LTD·Filed 2017·Granted Feb 5, 2019·1 cites·15 claims
- 3165US8000599B2Optical transmission system and optical transmission methodFUJITSU LTD·Filed 2007·Granted Aug 16, 2011·2 cites·14 claims
- 3265US7720378B2Optical module and optical switchFUJITSU LTD·Filed 2006·Granted May 18, 2010·2 cites·10 claims
- 3365US7483636B2Optical network with sub-band rejection and bypassFUJITSU LTD·Filed 2003·Granted Jan 27, 2009·6 cites·19 claims
- 3465US7349632B2Method of wavelength selection control and wavelength variable filter deviceFUJITSU LTD·Filed 2005·Granted Mar 25, 2008·3 cites·8 claims
- 3564US7368700B2Optical switch apparatus and optical switching systemFUJITSU LTD·Filed 2006·Granted May 6, 2008·2 cites·16 claims
- 3663US8681818B2Frame generating apparatus, optical transmission system, frame generating method, and optical transmission methodAOKI YASUHIKO·Filed 2009·Granted Mar 25, 2014·2 cites·24 claims
- 3762US9686016B2Optical transmission apparatus, optical transmission system, and control method of optical transmission systemFUJITSU LTD·Filed 2015·Granted Jun 20, 2017·1 cites·10 claims
- 3861US7751708B2Optical switching transmission system with timing correctionFUJITSU LTD·Filed 2007·Granted Jul 6, 2010·2 cites·6 claims
- 3958US7305184B2Method and system for management of directly connected optical componentsFUJITSU LTD·Filed 2003·Granted Dec 4, 2007·3 cites·14 claims
- 4058US3931219AProcess for preparing hexahydrothieno[3,4-d]imidazole-2,4-dionesSUMITOMO CHEMICAL CO·Filed 1974·Granted Jan 6, 1976·4 cites·9 claims
- 4157US7266294B2Coupler-based optical cross-connectFUJITSU LTD·Filed 2003·Granted Sep 4, 2007·3 cites·26 claims
- 4256US8032028B2Optical add/drop deviceFUJITSU LTD·Filed 2007·Granted Oct 4, 2011·1 cites·14 claims
- 4354US7512340B2Optical network systemFUJITSU LTD·Filed 2008·Granted Mar 31, 2009·2 cites·9 claims
- 4452US10256903B2Network controller and signal quality estimating methodFUJITSU LTD·Filed 2017·Granted Apr 9, 2019·0 cites·5 claims
- 4551US2009185804A1Optical access network systemFUJITSU LTD·Filed 2008·Application pending·0 cites
- 4647US8774642B2Optical transmission apparatus and optical interleaving control methodAOKI YASUHIKO·Filed 2012·Granted Jul 8, 2014·0 cites·6 claims
- 4747US8275258B2Optical communication base station, optical signal conversion apparatus, and optical signal conversion methodKAI YUTAKA·Filed 2009·Granted Sep 25, 2012·0 cites·11 claims
- 4845US10158422B2Apparatus and method for estimating optical transmission performanceFUJITSU LTD·Filed 2017·Granted Dec 18, 2018·0 cites·18 claims
- 4945US9185474B2Wavelength path switching method, optical communication system, optical communication device, optical repeater, and network management deviceFUJITSU LTD·Filed 2014·Granted Nov 10, 2015·0 cites·17 claims
- 5045US9136944B2Measurement device, measurement method, transfer device, and optical networkFUJITSU LTD·Filed 2013·Granted Sep 15, 2015·0 cites·10 claims
Showing the top 50 of 65 patent records by PatentIndex Score.
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