Inventor · disambiguated record
Shu Yamamoto
Also filed as: YAMAMOTO SHU
78 granted patents·7 pending applications·2,318 citations·filing 1981–2021
99Inventor score
Top patents by PatentIndex Score
85 records- 0195US6005702AOptical transmission device, WDM optical transmission apparatus, and optical transmission system using return-to-zero optical pulsesKOKUSAI DENSHIN DENWA CO LTD·Filed 1997·Granted Dec 21, 1999·135 cites·20 claims
- 0293US5790289AWDM optical communication method with pre-emphasis technique and an apparatus thereforKOKUSAI DENSHIN DENWA CO LTD·Filed 1996·Granted Aug 4, 1998·116 cites·14 claims
- 0390US5786918AOptical communication system and optical transmitting deviceKOKUSAI DENSHIN DENWA CO LTD·Filed 1995·Granted Jul 28, 1998·119 cites·13 claims
- 0490US4523802AUnitary mounting structure for semiconductor laser and optical fiberKOKUSAI DENSHIN DENWA CO LTD·Filed 1982·Granted Jun 18, 1985·64 cites·7 claims
- 0587US6532091B1Optical digital regeneratorKDD CORP·Filed 1999·Granted Mar 11, 2003·92 cites·31 claims
- 0684US6445478B2Optical pulse position detecting circuit and an optical pulse generating apparatus and their methodsMITSUBISHI ELECTRIC CORP·Filed 2001·Granted Sep 3, 2002·26 cites·8 claims
- 0784US6236488B1Optical pulse position detecting circuit and an optical pulse generating apparatus and their methodsMITSUBISHI ELECTRIC CORP·Filed 1998·Granted May 22, 2001·59 cites·20 claims
- 0884US5625479ASoliton optical communication system and optical transmitter and optical receiver thereforKOKUSAI DENSHIN DENWA CO LTD·Filed 1995·Granted Apr 29, 1997·52 cites·10 claims
- 0982US5589969AWavelength division multiplexed optical fiber transmission equipmentKOKUSAI DENSHIN DENWA CO LTD·Filed 1995·Granted Dec 31, 1996·58 cites·5 claims
- 1082US4490020ACoupling system for output light of semiconductor laserKOKUSAI DENSHIN DENWA CO LTD·Filed 1981·Granted Dec 25, 1984·40 cites·1 claims
- 1181US5710660AGain-controllable optical amplifier and optical gain-control methodKOKUSAI DENSHIN DENWA CO LTD·Filed 1996·Granted Jan 20, 1998·53 cites·25 claims
- 1277US5559910AWavelength division multiplexed optical fiber transmission equiptmentKOKUSAI DENSHIN DENWA CO LTD·Filed 1995·Granted Sep 24, 1996·57 cites·8 claims
- 1377US5138621APumping light source drive system for an optical amplifierKOKUSAI DENSHIN DENWA CO LTD·Filed 1991·Granted Aug 11, 1992·36 cites·12 claims
- 1475US6331907B1Multi-wavelength light source and discrete-wavelength-variable light sourceKOKUSAI DENSHIN DENWA CO LTD·Filed 2000·Granted Dec 18, 2001·8 cites·14 claims
- 1575US6160649AOptical power measuring system terminal station and repeater thereforKOKUSAI DENSHIN DENWA CO LTD·Filed 1998·Granted Dec 12, 2000·52 cites·36 claims
- 1675US5739943APolarization control unitTOSHIBA KK·Filed 1996·Granted Apr 14, 1998·49 cites·20 claims
- 1774US6801720B1Optical signal quality supervisory deviceMITSUBISHI ELECTRIC CORP·Filed 2000·Granted Oct 5, 2004·13 cites·11 claims
- 1874US6181449B1Wavelength division multiplexed optical processing device and optical communication transmission pathKOKUSAI DENSHIN DENWA CO LTD·Filed 1998·Granted Jan 30, 2001·46 cites·25 claims
- 1973US6556325B1Optical repeater monitoring system and a method thereofKDD CORP·Filed 2000·Granted Apr 29, 2003·14 cites·34 claims
- 2073US5912750AOptical transmission lineKOKUSAI DENSHIN DENWA CO LTD·Filed 1997·Granted Jun 15, 1999·40 cites·4 claims
- 2172US5838477AOptical submarine branching deviceKOKUSAI DENSHIN DENWA CO LTD·Filed 1996·Granted Nov 17, 1998·44 cites·5 claims
- 2272US5585954AApparatus for measuring optical transmission characteristicKOKUSAI DENSHIN DENWA CO LTD·Filed 1994·Granted Dec 17, 1996·46 cites·2 claims
- 2371US5898714AOptical pulse generatorKOKUSAI DENSHIN DENWA CO LTD·Filed 1997·Granted Apr 27, 1999·34 cites·6 claims
- 2470US7746891B2Enabling mobile IPv6 communication over a network containing IPv4 components using ISATAPKDDI CORP·Filed 2004·Granted Jun 29, 2010·14 cites·28 claims
- 2570US6215566B1Multi-wavelength light source and discrete-wavelength-variable light sourceKOKUSAI DENSHIN DENWA CO LTD·Filed 2000·Granted Apr 10, 2001·6 cites·5 claims
- 2670US5959764AWavelength converter, optically operational device and optical pulse phase detecting circuitKOKUSAI DENSHIN DENWA CO LTD·Filed 1997·Granted Sep 28, 1999·33 cites·20 claims
- 2769US5926300AOptical add-drop multiplexerKOKUSAI DENSHIN DENWA CO LTD·Filed 1997·Granted Jul 20, 1999·33 cites·10 claims
- 2869US5642215AOptical transmission systemKOKUSAI DENSHIN DENWA CO LTD·Filed 1995·Granted Jun 24, 1997·42 cites·6 claims
- 2969US5629795AOptical amplifying-repeating transmission systemKOKUSAI DENSHIN DENWA CO LTD·Filed 1995·Granted May 13, 1997·41 cites·6 claims
- 3068US5930015AOptical access systemKOKUSAI DENSHIN DENWA CO LTD·Filed 1997·Granted Jul 27, 1999·36 cites·7 claims
- 3167US7142787B2Optical data transmission method and its system, optical transmitter and its method, and optical switcherKDDI CORP·Filed 2001·Granted Nov 28, 2006·11 cites·8 claims
- 3267US6782201B2Four fiber ring network optical switching circuit using branched inputsDDI CORP·Filed 2000·Granted Aug 24, 2004·7 cites·7 claims
- 3367US6028695AOptical modulating apparatusMITSUBISHI ELECTRIC CORP·Filed 1998·Granted Feb 22, 2000·36 cites·12 claims
- 3467US6021235AWavelength-division multiplexing optical transmission systemKOKUSAI DENSHIN DENWA CO LTD·Filed 1998·Granted Feb 1, 2000·35 cites·20 claims
- 3566US6459518B1Optical transmitting apparatusKDD CORP·Filed 1999·Granted Oct 1, 2002·33 cites·23 claims
- 3666US6188508B1Control signal superimposerKDD CORP·Filed 1999·Granted Feb 13, 2001·35 cites·13 claims
- 3766US5790294ALine monitoring method and line monitoring apparatusKUKUSAI DENSHIN DENWA KABUSHIK·Filed 1996·Granted Aug 4, 1998·41 cites·11 claims
- 3866US5574590AOptical amplifying transmitting systemKOKUSAI DENSHIN DENWA CO LTD·Filed 1995·Granted Nov 12, 1996·36 cites·10 claims
- 3965US5872647AOptical transmitting terminalKOKUSAI DENSHIN DENWA CO LTD·Filed 1996·Granted Feb 16, 1999·32 cites·6 claims
- 4064US6115173AOptical amplifying transmission system and optical amplifierKDD CORP·Filed 1998·Granted Sep 5, 2000·30 cites·28 claims
- 4164US5889607AOptical modulator, optical short pulse generating device, optical waveform shaping device, and optical demultiplexer deviceKOKUSAI DENSHIN DENWA CO LTD·Filed 1997·Granted Mar 30, 1999·32 cites·8 claims
- 4262US8286482B2Process-liquid supply mechanism and process-liquid supply methodYAMAMOTO SHU·Filed 2008·Granted Oct 16, 2012·4 cites·10 claims
- 4362US6614588B1Optical amplifier having various control circuitryMITSUBISHI ELECTRIC CORP·Filed 2000·Granted Sep 2, 2003·6 cites·17 claims
- 4462US5898502AOptical wavelength monitoring apparatusKOKUSAI DENSHIN DENWA CO LTD·Filed 1997·Granted Apr 27, 1999·28 cites·20 claims
- 4562US5430795AOptical transmitter with the signal light of reduced degree of polarization and optical depolarizing circuitKOKUSAI DENSHIN DENWA CO LTD·Filed 1993·Granted Jul 4, 1995·31 cites·8 claims
- 4662US4747094ASignal coupling system for optical repeater systemKOKUSAI DENSHIN DENWA CO LTD·Filed 1985·Granted May 24, 1988·24 cites·6 claims
- 4761US6741810B2Signal demultiplexing device and signal routing device in high speed transmission systemDDI CORP·Filed 2001·Granted May 25, 2004·5 cites·4 claims
- 4861US6219163B1Multi-wavelength light source and discrete-wavelength-variable light sourceKOKUSAI DENSHIN DENWA CO LTD·Filed 2000·Granted Apr 17, 2001·3 cites·5 claims
- 4960US6434288B1Optical switching systemKDD CORP·Filed 1999·Granted Aug 13, 2002·24 cites·7 claims
- 5060US5920413AMethod and device for optical add/drop multiplexing using high speed polarization scramblerKOKUSAI DENSHIN DENWA CO LTD·Filed 1997·Granted Jul 6, 1999·23 cites·18 claims
Showing the top 50 of 85 patent records by PatentIndex Score.
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