Inventor · disambiguated record
Masateru Tadakuma
Also filed as: TADAKUMA MASATERU
19 granted patents·1 pending application·192 citations·filing 1995–2020
94Inventor score
Top patents by PatentIndex Score
20 records- 0192US6522818B1Method for efficient four-wave mixing generation and short pulse generation equipment using the methodFURUKAWA ELECTRIC CO LTD·Filed 2000·Granted Feb 18, 2003·63 cites·14 claims
- 0290US7869014B2System for measuring the wavelength dispersion and nonlinear coefficient of an optical fiberFURUKAWA ELECTRIC CO LTD·Filed 2008·Granted Jan 11, 2011·13 cites·9 claims
- 0390US7424191B2System for measuring the wavelength dispersion and nonlinear coefficient of an optical fiberFURUKAWA ELECTRIC CO LTD·Filed 2006·Granted Sep 9, 2008·14 cites·12 claims
- 0487US7447444B2Light source in optical transmission system, waveform shaper, optical pulse train generator, and optical reproduction systemFURUKAWA ELECTRIC CO LTD·Filed 2005·Granted Nov 4, 2008·13 cites·8 claims
- 0584US7146085B2Method and system for measuring the wavelength dispersion and nonlinear coefficient of an optical fiber, method of manufacturing optical fibers, method of measuring wavelength-dispersion distribution, method of compensating for measurement errors, and method of specifying conditions of measurementFURUKAWA ELECTRIC CO LTD·Filed 2005·Granted Dec 5, 2006·8 cites·5 claims
- 0681US10718658B2Optical fiber sensor, seismic prospecting method, method of measuring distribution of petroleum/natural gas reservoir layer, strain detection method, and method of specifying position of a fissure in stratumFURUKAWA ELECTRIC CO LTD·Filed 2017·Granted Jul 21, 2020·3 cites·21 claims
- 0777US9722388B2Multi-core optical amplifying fiber device and multi-core optical fiber amplifierFURUKAWA ELECTRIC CO LTD·Filed 2015·Granted Aug 1, 2017·2 cites·12 claims
- 0875US7003202B2Method and system for measuring the wavelength dispersion and nonlinear coefficient of an optical fiber, method of manufacturing optical fibers, method of measuring wavelength-dispersion distribution, method of compensating for measurement errors, and method of specifying conditions of measurementFURUKAWA ELECTRIC CO LTD·Filed 2004·Granted Feb 21, 2006·12 cites·5 claims
- 0975US6920263B2Optical pulse generatorFURUKAWA ELECTRIC CO LTD·Filed 2002·Granted Jul 19, 2005·16 cites·35 claims
- 1074US7769298B2Light source in optical transmission system, waveform shaper, optical pulse train generator and optical reproduction systemFURUKAWA ELECTRIC CO LTD·Filed 2008·Granted Aug 3, 2010·4 cites·9 claims
- 1172US7630607B2Optical fiber deviceFURUKAWA ELECTRIC CO LTD·Filed 2008·Granted Dec 8, 2009·3 cites·6 claims
- 1272US7054057B2Multi-frequency light sourceFURUKAWA ELECTRIC CO LTD·Filed 2002·Granted May 30, 2006·10 cites·27 claims
- 1371US7408701B2Multi-frequency light sourceFURUKAWA ELECTRIC CO LTD·Filed 2006·Granted Aug 5, 2008·4 cites·17 claims
- 1465US7155095B2Method for efficient four-wave mixing generation and short pulse generation equipment using the methodFURUKAWA ELECTRIC CO LTD·Filed 2002·Granted Dec 26, 2006·10 cites·4 claims
- 1560US7536074B2Optical fiberFURUKAWA ELECTRIC CO LTD·Filed 2008·Granted May 19, 2009·2 cites·3 claims
- 1659US11519759B2Cable, cable shape sensing system, sensing system, and cable shape sensing methodFURUKAWA ELECTRIC CO LTD·Filed 2020·Granted Dec 6, 2022·0 cites·24 claims
- 1755US6892015B2Optical pulse waveform conversionFURUKAWA ELECTRIC CO LTD·Filed 2002·Granted May 10, 2005·5 cites·17 claims
- 1846US7693377B2Optical fiber module and optical deviceFURUKAWA ELECTRIC CO LTD·Filed 2008·Granted Apr 6, 2010·0 cites·18 claims
- 1940US5808768AOptical telecommunications systemFURUKAWA ELECTRIC CO LTD·Filed 1995·Granted Sep 15, 1998·10 cites·1 claims
- 2037US2007216993A1Optical Fiber Laser Using Rare Earth-Added Fiber And Wide Band Light SourceYUICHI TAKUSHIMA·Filed 2005·Application pending·0 cites
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