Inventor · disambiguated record
Toshiki Sugawara
Also filed as: SUGAWARA TOSHIKI
49 granted patents·18 pending applications·678 citations·filing 1997–2015
98Inventor score
Top patents by PatentIndex Score
67 records- 0196US6625115B1Self-healing network, method for transmission line switching thereof, and transmission equipment thereofHITACHI LTD·Filed 2000·Granted Sep 23, 2003·50 cites·5 claims
- 0295US8437584B2Optical I/O array module and its fabrication methodMATSUOKA YASUNOBU·Filed 2010·Granted May 7, 2013·33 cites·10 claims
- 0395US8303195B2Optical transceiver moduleADACHI KOICHIRO·Filed 2008·Granted Nov 6, 2012·32 cites·18 claims
- 0491US8036533B2Optical transmitter/receiver moduleHITACHI LTD·Filed 2008·Granted Oct 11, 2011·29 cites·12 claims
- 0591US7991290B2Optical prism and optical transceiver module for optical communicationsHITACHI LTD·Filed 2006·Granted Aug 2, 2011·23 cites·31 claims
- 0690US8331784B2Network system and optical line terminalMIZUTANI MASAHIKO·Filed 2008·Granted Dec 11, 2012·19 cites·8 claims
- 0790US6219336B1Terminal multiplexer and method of constructing the terminal multiplexerHITACHI LTD·Filed 2000·Granted Apr 17, 2001·30 cites·8 claims
- 0889US6144633ASelf-healing network, method for transmission line switching thereof, and transmission equipment thereofHITACHI LTD·Filed 1997·Granted Nov 7, 2000·75 cites·38 claims
- 0988US8909021B2Semiconductor optical deviceSAITO SHINICHI·Filed 2010·Granted Dec 9, 2014·6 cites·12 claims
- 1088US7936991B2Optical line terminating apparatus and optical communication systemHITACHI LTD·Filed 2008·Granted May 3, 2011·12 cites·16 claims
- 1187US8488965B2Network system and optical line terminalMIZUTANI MASAHIKO·Filed 2008·Granted Jul 16, 2013·11 cites·9 claims
- 1286US8457495B2Network system, optical network unit and optical line terminalMIZUTANI MASAHIKO·Filed 2008·Granted Jun 4, 2013·10 cites·14 claims
- 1386US8249454B2Optical communication system and optical line terminating apparatusSUGAWARA TOSHIKI·Filed 2009·Granted Aug 21, 2012·15 cites·11 claims
- 1486US8027586B2Passive optical network system and optical line terminating apparatusHITACHI LTD·Filed 2008·Granted Sep 27, 2011·11 cites·9 claims
- 1585US9154220B2Large-capacity fiber optical switching device and optical transmission systemHITACHI LTD·Filed 2014·Granted Oct 6, 2015·7 cites·15 claims
- 1685US6850713B2Optical single sideband transmitterHITACHI LTD·Filed 2002·Granted Feb 1, 2005·44 cites·18 claims
- 1784US6697386B2Multiplex transmission apparatuses, multiplex transmission networks, and operation method thereforHITACHI LTD·Filed 2000·Granted Feb 24, 2004·20 cites·23 claims
- 1881US8855160B2Horizontal-cavity surface-emitting laserADACHI KOICHIRO·Filed 2010·Granted Oct 7, 2014·5 cites·9 claims
- 1980US8406581B2Photoelectric composite wiring module and method for manufacturing sameHAMAMURA SAORI·Filed 2010·Granted Mar 26, 2013·8 cites·12 claims
- 2080US7518998B2IP packet communication apparatusHITACHI LTD·Filed 2005·Granted Apr 14, 2009·7 cites·18 claims
- 2180US7061619B2Chemical substance measuring apparatus using optical waveguidesHITACHI LTD·Filed 2004·Granted Jun 13, 2006·17 cites·20 claims
- 2280US6169754B1Multiplex transmission apparatuses, multiplex transmission networks, and operation method thereforHITACHI LTD·Filed 1997·Granted Jan 2, 2001·44 cites·8 claims
- 2379US6785225B1Communication apparatus and communication systemHITACHI LTD·Filed 2000·Granted Aug 31, 2004·15 cites·6 claims
- 2476US8942520B2Optical waveguide board having guided structure and method of manufacturing the same, and method of manufacturing optical-electrical hybrid boardMATSUOKA YASUNOBU·Filed 2010·Granted Jan 27, 2015·4 cites·8 claims
- 2575US8680553B2Light-emitting device, light-receiving device and method of manufacturing the sameSAITO SHINICHI·Filed 2009·Granted Mar 25, 2014·3 cites·10 claims
- 2674US9379276B2Optical interconnection module and optical-electrical hybrid boardHITACHI LTD·Filed 2015·Granted Jun 28, 2016·2 cites·11 claims
- 2774US8116627B2PON system method for receiving optical signal and OLTIKEDA HIROKI·Filed 2008·Granted Feb 14, 2012·5 cites·15 claims
- 2874US7518985B2Communication apparatus and communication systemHITACHI COMM TECH LTD·Filed 2005·Granted Apr 14, 2009·4 cites·8 claims
- 2973US8401347B2Photoelectric composite wiring module and method for manufacturing the sameMATSUSHIMA NAOKI·Filed 2009·Granted Mar 19, 2013·6 cites·18 claims
- 3072US8965153B2Optical semiconductor device and optical waveguideTAKAHASHI MAKOTO·Filed 2007·Granted Feb 24, 2015·4 cites·12 claims
- 3172US8090261B2Network system, optical line terminating apparatus, and optical network apparatusSUGAWARA TOSHIKI·Filed 2008·Granted Jan 3, 2012·5 cites·34 claims
- 3272US7257292B2Variable dispersion compensatorHITACHI METALS LTD·Filed 2006·Granted Aug 14, 2007·6 cites·18 claims
- 3371US7676127B2Optical communication system using WDMA and CDMAHITACHI COMM TECH LTD·Filed 2007·Granted Mar 9, 2010·3 cites·13 claims
- 3469US7512344B2Variable dispersion compensatorHITACHI METALS LTD·Filed 2005·Granted Mar 31, 2009·5 cites·9 claims
- 3567US8755423B2Surface emitting laser module and vertical illuminated photodiode moduleADACHI KOICHIRO·Filed 2010·Granted Jun 17, 2014·2 cites·6 claims
- 3667US7054265B1Communication apparatus and communication systemHITACHI LTD·Filed 2000·Granted May 30, 2006·6 cites·20 claims
- 3766US6775434B2Variable optical dispersion compensatorHITACHI LTD·Filed 2003·Granted Aug 10, 2004·9 cites·18 claims
- 3865US6411631B1Multiplex type transmitting apparatusHITACHI LTD·Filed 2000·Granted Jun 25, 2002·9 cites·2 claims
- 3964US8902947B2Optical moduleMAKINO SHIGEKI·Filed 2012·Granted Dec 2, 2014·2 cites·12 claims
- 4064US6577438B2Method and apparatus for monitoring and controlling gain tilt in an optical amplifierHITACHI LTD·Filed 2001·Granted Jun 10, 2003·7 cites·18 claims
- 4163US8224135B2Optical communication system using WDMA and CDMAMIZUTANI MASAHIKO·Filed 2010·Granted Jul 17, 2012·1 cites·19 claims
- 4260US6094440AMultiplex type transmitting apparatusHITACHI LTD·Filed 1997·Granted Jul 25, 2000·22 cites·6 claims
- 4359US7145146B2Micro-spectroscopic measuring device and micro-chemical systemHITACHI LTD·Filed 2004·Granted Dec 5, 2006·2 cites·16 claims
- 4456US8569727B2Light beam scanning image projection apparatusNOMOTO ETSUKO·Filed 2009·Granted Oct 29, 2013·1 cites·9 claims
- 4555US6907006B1Method and apparatus for detecting faults in IP packet communicationHITACHI LTD·Filed 1999·Granted Jun 14, 2005·28 cites·9 claims
- 4654US7590356B2Variable dispersion compensatorHITACHI METALS LTD·Filed 2006·Granted Sep 15, 2009·1 cites·33 claims
- 4754US6049525ATerminal multiplexer and method of constructing the terminal multiplexerHITACHI LTD·Filed 1997·Granted Apr 11, 2000·17 cites·20 claims
- 4849US7386012B2Multiplex transmission apparatuses, multiplex transmission networks, and operation method thereforHITACHI LTD·Filed 2003·Granted Jun 10, 2008·0 cites·15 claims
- 4949US2006045809A1Detection system for biological substancesHITACHI LTD·Filed 2004·Application pending·0 cites
- 5048US2004257579A1Chemical sensorHITACHI LTD·Filed 2004·Application pending·0 cites
Showing the top 50 of 67 patent records by PatentIndex Score.
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