Inventor · disambiguated record
Masahiko Mizutani
Also filed as: MIZUTANI MASAHIKO
50 granted patents·12 pending applications·543 citations·filing 1999–2014
98Inventor score
Top patents by PatentIndex Score
62 records- 0197US7675936B2Passive optical network (PON) systemHITACHI LTD·Filed 2006·Granted Mar 9, 2010·73 cites·9 claims
- 0297US7649890B2Packet forwarding apparatus and communication bandwidth control methodHITACHI COMM TECH LTD·Filed 2005·Granted Jan 19, 2010·85 cites·20 claims
- 0394US7630637B2PON system and optical network unitHITACHI COMM TECH LTD·Filed 2006·Granted Dec 8, 2009·20 cites·6 claims
- 0493US8428457B2Optical passive network system and its operation methodMIZUTANI MASAHIKO·Filed 2010·Granted Apr 23, 2013·23 cites·9 claims
- 0592US8457493B2Optical communication system and communication bandwidth control methodMIZUTANI MASAHIKO·Filed 2010·Granted Jun 4, 2013·11 cites·9 claims
- 0691US7620325B2Transmission apparatus with function of multi-step bandwidth assignment to other communication apparatusesHITACHI COMM TECH LTD·Filed 2006·Granted Nov 17, 2009·28 cites·3 claims
- 0790US8331784B2Network system and optical line terminalMIZUTANI MASAHIKO·Filed 2008·Granted Dec 11, 2012·19 cites·8 claims
- 0890US7602800B2PON systemHITACHI COMM TECH LTD·Filed 2007·Granted Oct 13, 2009·16 cites·10 claims
- 0990US7369768B2Optical access systemHITACHI COMM TECH LTD·Filed 2006·Granted May 6, 2008·12 cites·21 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
- 1286US9379877B2Communication system and its deviceHITACHI LTD·Filed 2012·Granted Jun 28, 2016·7 cites·8 claims
- 1386US8457495B2Network system, optical network unit and optical line terminalMIZUTANI MASAHIKO·Filed 2008·Granted Jun 4, 2013·10 cites·14 claims
- 1486US8027586B2Passive optical network system and optical line terminating apparatusHITACHI LTD·Filed 2008·Granted Sep 27, 2011·11 cites·9 claims
- 1585US8139950B2Passive optical network system, optical line terminator and, communication method of passive optical network systemNIIBE MASAO·Filed 2008·Granted Mar 20, 2012·15 cites·11 claims
- 1685US8027258B2Communication system and communication apparatusHITACHI LTD·Filed 2009·Granted Sep 27, 2011·11 cites·11 claims
- 1784US8554075B2Communication system, subscriber accommodating apparatus and communication methodMIZUTANI MASAHIKO·Filed 2009·Granted Oct 8, 2013·9 cites·5 claims
- 1883US8249458B2Optical communication system and method for operating the sameMIZUTANI MASAHIKO·Filed 2009·Granted Aug 21, 2012·9 cites·9 claims
- 1982US8254780B2Passive optical network system and fault determination methodMIZUTANI MASAHIKO·Filed 2009·Granted Aug 28, 2012·10 cites·3 claims
- 2082US7773880B2Optical access systemHITACHI LTD·Filed 2008·Granted Aug 10, 2010·6 cites·8 claims
- 2181US8391715B2Passive optical network systemNIIBE MASAO·Filed 2011·Granted Mar 5, 2013·7 cites·5 claims
- 2281US8374504B2Optical communication systemHITACHI LTD·Filed 2006·Granted Feb 12, 2013·8 cites·11 claims
- 2380US8145055B2Passive optical network system, optical line terminator and optical network unitNIIBE MASAO·Filed 2009·Granted Mar 27, 2012·8 cites·13 claims
- 2476US9407389B2Communication system and time synchronization methodHITACHI LTD·Filed 2014·Granted Aug 2, 2016·5 cites·4 claims
- 2575US7962037B2PON system and optical network unitHITACHI LTD·Filed 2009·Granted Jun 14, 2011·4 cites·18 claims
- 2675US7232957B2Hybrid integrated circuit device and method of manufacturing the sameSANYO ELECTRIC CO·Filed 2004·Granted Jun 19, 2007·21 cites·10 claims
- 2774US8089865B2Multicast path management and protectionMIZUTANI MASAHIKO·Filed 2006·Granted Jan 3, 2012·6 cites·10 claims
- 2873US8095004B2Passive optical network system and operation method of the sameMIZUTANI MASAHIKO·Filed 2009·Granted Jan 10, 2012·4 cites·7 claims
- 2973US7908390B2Packet forwarding apparatus using token bucket algorithm and leaky bucket algorithmHITACHI LTD·Filed 2006·Granted Mar 15, 2011·5 cites·28 claims
- 3071US8824894B2Passive optical network systemNIIBE MASAO·Filed 2011·Granted Sep 2, 2014·3 cites·13 claims
- 3171US8098678B2PON systemENDO HIDEKI·Filed 2009·Granted Jan 17, 2012·3 cites·32 claims
- 3271US7676127B2Optical communication system using WDMA and CDMAHITACHI COMM TECH LTD·Filed 2007·Granted Mar 9, 2010·3 cites·13 claims
- 3370US8864231B2Bearing assembly for worm drive and worm gear for use in a seat sliding mechanism for an automobile power seatSHIMODA MASATO·Filed 2009·Granted Oct 21, 2014·15 cites·4 claims
- 3470US8283681B2Lighting device and method of manufacturing the sameSAKAMOTO NORIAKI·Filed 2010·Granted Oct 9, 2012·5 cites·9 claims
- 3570US8169895B2Network system and nodeTAKASE MASAYUKI·Filed 2007·Granted May 1, 2012·4 cites·10 claims
- 3669US8422375B2Communication system and communication apparatusMIZUTANI MASAHIKO·Filed 2011·Granted Apr 16, 2013·2 cites·7 claims
- 3764US8189571B2System apparatus and method for interconnecting TDM and frame/packet communication networksMIZUTANI MASAHIKO·Filed 2006·Granted May 29, 2012·2 cites·2 claims
- 3864US7586929B2Method and system for content-oriented routing in a storage-embedded networkHITACHI LTD·Filed 2003·Granted Sep 8, 2009·9 cites·15 claims
- 3963US8224135B2Optical communication system using WDMA and CDMAMIZUTANI MASAHIKO·Filed 2010·Granted Jul 17, 2012·1 cites·19 claims
- 4062US7346670B2Secure storage systemHITACHI LTD·Filed 2003·Granted Mar 18, 2008·7 cites·20 claims
- 4160US8305907B2Network system and data transfer deviceMIZUTANI MASAHIKO·Filed 2006·Granted Nov 6, 2012·1 cites·14 claims
- 4260US7250352B2Methods for manufacturing a hybrid integrated circuit deviceSANYO ELECTRIC CO·Filed 2003·Granted Jul 31, 2007·11 cites·28 claims
- 4355US6956252B2Hybrid integrated circuit deviceSANYO ELECTRIC CO·Filed 2003·Granted Oct 18, 2005·8 cites·31 claims
- 4454US2015103643A1Transmission network and transmission network management systemHITACHI LTD·Filed 2014·Application pending·0 cites
- 4553US2009210553A1Packet forwarding apparatus using token bucket algorithm and leaky bucket algorithmHITACHI COMM TECH LTD·Filed 2009·Application pending·0 cites
- 4653US2009067850A1Communication System and Its DeviceMIZUTANI MASAHIKO·Filed 2008·Application pending·0 cites
- 4751US8654766B2System apparatus and method for interconnecting TDM and frame/packet communication networksMIZUTANI MASAHIKO·Filed 2012·Granted Feb 18, 2014·0 cites·3 claims
- 4850US2009317082A1Passive Optical Network System, Optical Network Unit, and Optical Line TerminalKIMURA MITSUNOBU·Filed 2009·Application pending·0 cites
- 4949US9350746B2Transmission network system, transmission method, and authentication information deviceHITACHI LTD·Filed 2014·Granted May 24, 2016·0 cites·14 claims
- 5049US8290369B2Optical access systemSAKAMOTO KENICHI·Filed 2009·Granted Oct 16, 2012·0 cites·30 claims
Showing the top 50 of 62 patent records by PatentIndex Score.
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