Inventor · disambiguated record
Shigeki Watanabe
Also filed as: WATANABE SHIGEKI
129 granted patents·23 pending applications·2,219 citations·filing 1989–2024
99Inventor score
Top patents by PatentIndex Score
152 records- 0197US6847758B1Method, optical device, and system for optical fiber transmissionFUJITSU LTD·Filed 2000·Granted Jan 25, 2005·93 cites·23 claims
- 0296US6608854B1Method, device, and system for waveform shaping of signal lightFUJITSU LTD·Filed 2000·Granted Aug 19, 2003·61 cites·30 claims
- 0395US5896211AOptical communication systemFUJITSU LTD·Filed 1997·Granted Apr 20, 1999·179 cites·18 claims
- 0493US7848647B2Optical switch and optical waveform monitoring device utilizing optical switchFUJITSU LTD·Filed 2005·Granted Dec 7, 2010·16 cites·26 claims
- 0593US6477300B2Method, device, and system for waveform shaping of signal lightFUJITSU LTD·Filed 2001·Granted Nov 5, 2002·41 cites·31 claims
- 0693US5798853AOptical communication system compensating for chromatic dispersion and phase conjugate light generator for use therewithFUJITSU LTD·Filed 1996·Granted Aug 25, 1998·150 cites·50 claims
- 0791US8647595B2Method for separating radioactive copper using chelating-ion exchange resinWATANABE SHIGEKI·Filed 2009·Granted Feb 11, 2014·11 cites·1 claims
- 0891US8488978B2Optical signal processorWATANABE SHIGEKI·Filed 2011·Granted Jul 16, 2013·8 cites·18 claims
- 0991US7639945B2Optical switch device and optical switching methodFUJITSU LTD·Filed 2006·Granted Dec 29, 2009·15 cites·14 claims
- 1091US6987607B2Optical AND gate and waveform shaping deviceFUJITSU LTD·Filed 2003·Granted Jan 17, 2006·42 cites·18 claims
- 1191US6504972B2Optical fiber communication system using optical phase conjugation as well as apparatus applicable to the system and method of producing the sameFUJITSU LTD·Filed 2001·Granted Jan 7, 2003·35 cites·8 claims
- 1290US7835643B2Optical waveform measuring apparatus and optical waveform measuring methodFUJITSU LTD·Filed 2005·Granted Nov 16, 2010·21 cites·19 claims
- 1390US7388710B2Optical parametric amplifierFUJITSU LTD·Filed 2006·Granted Jun 17, 2008·13 cites·9 claims
- 1490US7072549B2Optical gate device, manufacturing method for the device, and system including the deviceFUJITSU LTD·Filed 2003·Granted Jul 4, 2006·31 cites·6 claims
- 1590US6307984B1Optical fiber communication system using optical phase conjugation as well as apparatus applicable to the system and method of producing the sameFUJITSU LTD·Filed 1997·Granted Oct 23, 2001·85 cites·72 claims
- 1690US5596667AApplication of phase conjugate optics to optical systemsFUJITSU LTD·Filed 1993·Granted Jan 21, 1997·97 cites·52 claims
- 1789US7450298B2Optical signal waveform shaping apparatusFUJITSU LTD·Filed 2006·Granted Nov 11, 2008·15 cites·35 claims
- 1887US9857662B2Optical frequency shift device and methodFUJITSU LTD·Filed 2017·Granted Jan 2, 2018·6 cites·5 claims
- 1987US8243363B2Optical signal processing apparatus, optical receiving apparatus, and optical relay apparatusWATANABE SHIGEKI·Filed 2008·Granted Aug 14, 2012·8 cites·24 claims
- 2087US6751385B2Method and device for measuring the waveform of an optical signalFUJITSU LTD·Filed 2001·Granted Jun 15, 2004·34 cites·23 claims
- 2186US9106359B2Optical network system, optical multiplexing apparatus, and receiving apparatusKATO TOMOYUKI·Filed 2011·Granted Aug 11, 2015·9 cites·8 claims
- 2286US8270842B2Optical signal processing deviceWATANABE SHIGEKI·Filed 2009·Granted Sep 18, 2012·8 cites·11 claims
- 2386US5920588AMethod and device for generation of phase conjugate light and wavelength conversion, and system having the deviceFUJITSU LTD·Filed 1997·Granted Jul 6, 1999·66 cites·66 claims
- 2485US7978319B2Optical switching method and optical switchFUJITSU LTD·Filed 2007·Granted Jul 12, 2011·10 cites·10 claims
- 2585US7940454B2Optical parametric amplifierFUJITSU LTD·Filed 2007·Granted May 10, 2011·8 cites·18 claims
- 2685US6853774B2Method, device, and system for waveform shaping of signal lightFUJITSU LTD·Filed 2002·Granted Feb 8, 2005·29 cites·24 claims
- 2785US6665480B2Optical gate device, manufacturing method for the device, and system including the deviceFUJITSU LTD·Filed 2002·Granted Dec 16, 2003·22 cites·5 claims
- 2885US6453082B1Device and system for waveform shapingFUJITSU LTD·Filed 2000·Granted Sep 17, 2002·28 cites·23 claims
- 2983US10851493B2Running wire rope and method of manufacturing sameTOKYO ROPE MFG CO·Filed 2019·Granted Dec 1, 2020·3 cites·7 claims
- 3083US7076174B2Method, device, and system for processing optical signalFUJITSU LTD·Filed 2001·Granted Jul 11, 2006·26 cites·15 claims
- 3183US6859307B2Method and device for waveform shaping of signal lightFUJITSU LTD·Filed 2001·Granted Feb 22, 2005·19 cites·29 claims
- 3283US6771853B2Optical fiber communication system using optical phase conjugation as well as apparatus applicable to the system and method of producing the sameFUJITSU LTD·Filed 2002·Granted Aug 3, 2004·18 cites·4 claims
- 3383US6626592B2Optical communication system using optical phase conjugation to suppress waveform distortion caused by chromatic dispersion and optical Kerr effectFUJITSU LTD·Filed 2001·Granted Sep 30, 2003·19 cites·11 claims
- 3482US11608593B2Wire rope, sheave and drumTOKYO ROPE MFG CO·Filed 2020·Granted Mar 21, 2023·1 cites·11 claims
- 3582US10429721B2Wavelength conversion device, control-light generation device, wavelength conversion method, and control-light generation methodFUJITSU LTD·Filed 2019·Granted Oct 1, 2019·1 cites·7 claims
- 3682US10281798B2Wavelength conversion device, control-light generation device, wavelength conversion method, and control-light generation methodFUJITSU LTD·Filed 2018·Granted May 7, 2019·1 cites·6 claims
- 3782US8041169B2Optical signal processing deviceFUJITSU LTD·Filed 2009·Granted Oct 18, 2011·6 cites·19 claims
- 3882US7810828B2Splash shield for automobile having vertical walls and shielding member thereforHAYASHI TELEMPU KK·Filed 2007·Granted Oct 12, 2010·15 cites·8 claims
- 3982US6963675B2Device and system for phase conjugate conversion and wavelength conversionFUJITSU LTD·Filed 2003·Granted Nov 8, 2005·20 cites·7 claims
- 4082US6424773B1Optical gate device, manufacturing method for the device, and system including the deviceFUJITSU LTD·Filed 1998·Granted Jul 23, 2002·52 cites·13 claims
- 4182US4965858APolarization diversity optical receiver for coherent optical communicationFUJITSU LTD·Filed 1989·Granted Oct 23, 1990·57 cites·39 claims
- 4281US5432632AOptical communication systemFUJITSU LTD·Filed 1992·Granted Jul 11, 1995·57 cites·11 claims
- 4380US8385741B2Optical pulse generating device and optical signal processing deviceFUJITSU LTD·Filed 2010·Granted Feb 26, 2013·3 cites·11 claims
- 4479US8773753B2Optical amplifier and optical amplifying apparatusKATO TOMOYUKI·Filed 2011·Granted Jul 8, 2014·4 cites·14 claims
- 4579US8311410B2Optical switch and optical waveform monitoring device utilizing optical switchWATANABE SHIGEKI·Filed 2010·Granted Nov 13, 2012·4 cites·6 claims
- 4679US7280766B2Method and device for processing an optical signalFUJITSU LTD·Filed 2003·Granted Oct 9, 2007·19 cites·29 claims
- 4779US7088491B2Pulse generating apparatus and methodFUJITSU LTD·Filed 2004·Granted Aug 8, 2006·18 cites·2 claims
- 4879US6963436B2Method and device for waveform shaping of signal lightFUJITSU LTD·Filed 2002·Granted Nov 8, 2005·19 cites·17 claims
- 4979US6870974B2Optical fiber communication system using optical phase conjugation as well as apparatus applicable to the system and method of producing the sameFUJITSU LTD·Filed 2004·Granted Mar 22, 2005·14 cites·3 claims
- 5079US6341026B1Optical communication system using optical phase conjugation to suppress waveform distortion caused by chromatic dispersion and optical kerr effectFUJITSU LTD·Filed 2000·Granted Jan 22, 2002·15 cites·3 claims
Showing the top 50 of 152 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →