Inventor · disambiguated record
Norihisa Naganuma
Also filed as: NAGANUMA NORIHISA
27 granted patents·2 pending applications·375 citations·filing 1989–2016
97Inventor score
Top patents by PatentIndex Score
29 records- 0179US9285650B2Optical modulating apparatus and optical transmitterFUJITSU OPTICAL COMPONENTS LTD·Filed 2013·Granted Mar 15, 2016·3 cites·15 claims
- 0275US7209284B2Optical amplifier using reflection-type variable optical attenuator for feedbackFUJITSU LTD·Filed 2005·Granted Apr 24, 2007·5 cites·5 claims
- 0375US6993217B2Optical switch deviceFUJITSU LTD·Filed 2005·Granted Jan 31, 2006·7 cites·24 claims
- 0475US5905827AOptical multiplexer/demultiplexer and wavelength division multiplexing moduleFUJITSU LTD·Filed 1997·Granted May 18, 1999·44 cites·11 claims
- 0570US10001693B2Light communication device, light module, and method for couplingFUJITSU OPTICAL COMPONENTS LTD·Filed 2016·Granted Jun 19, 2018·2 cites·17 claims
- 0670US5812307AOptical device and optical amplifierFUJITSU LTD·Filed 1997·Granted Sep 22, 1998·34 cites·26 claims
- 0768US6310717B1Optical amplifier and fiber module for optical amplificationFUJITSU LTD·Filed 1999·Granted Oct 30, 2001·30 cites·31 claims
- 0868US5223975APolarization beam coupler including a splitter for producing an output monitor beamFUJITSU LTD·Filed 1989·Granted Jun 29, 1993·25 cites·11 claims
- 0967US6295393B1Polarized light synthesizing apparatus, a polarized light splitting apparatus and a pump light outputting apparatusFUJISTSU LTD·Filed 1999·Granted Sep 25, 2001·34 cites·17 claims
- 1064US6515776B1Optical device, terminal unit, and system for wavelength division multiplexingFUJITSU LTD·Filed 1999·Granted Feb 4, 2003·26 cites·22 claims
- 1164US6115178AOptical deviceFUJITSU LTD·Filed 1996·Granted Sep 5, 2000·28 cites·16 claims
- 1258US6650797B2Wavelength characteristics control device, gain equalizer and light amplifierFUJITSU LTD·Filed 2002·Granted Nov 18, 2003·4 cites·50 claims
- 1355US6829396B2Wavelength characteristic control device, gain equalizer, and light amplifierFUJITSU LTD·Filed 2003·Granted Dec 7, 2004·3 cites·17 claims
- 1452US6370285B1Wavelength characteristic control device, gain equalizer, and light amplifierFUJITSU LTD·Filed 1998·Granted Apr 9, 2002·14 cites·41 claims
- 1551US6452720B1Light source apparatus, optical amplifier and optical communication systemFUJITSU LTD·Filed 1997·Granted Sep 17, 2002·13 cites·16 claims
- 1651US6101025AOptical repeater having redundancyFUJITSU LTD·Filed 1996·Granted Aug 8, 2000·19 cites·24 claims
- 1751US5125053AOptical coupler ultizing prismsFUJITSU LTD·Filed 1991·Granted Jun 23, 1992·15 cites·14 claims
- 1850US6496619B2Method for gain equalization, and device and system for use in carrying out the methodFUJITSU LTD·Filed 1999·Granted Dec 17, 2002·14 cites·18 claims
- 1950US6046813AWavelength detecting deviceFUJITSU LIMILTED·Filed 1999·Granted Apr 4, 2000·16 cites·39 claims
- 2049US6856455B2Light source apparatus, optical amplifier and optical communication systemFUJITSU LTD·Filed 2002·Granted Feb 15, 2005·1 cites·13 claims
- 2147US5801892AOptical device having an optical film with an incident angle thereupon variableFUJITSU LTD·Filed 1996·Granted Sep 1, 1998·12 cites·37 claims
- 2246US5377040APolarization independent optical deviceFUJITSU LTD·Filed 1991·Granted Dec 27, 1994·10 cites·4 claims
- 2342US5015055APolarization couplerFUJITSU LTD·Filed 1990·Granted May 14, 1991·10 cites·11 claims
- 2441US6807335B2Wavelength characteristic variable apparatusFUJITSU LTD·Filed 2001·Granted Oct 19, 2004·0 cites·14 claims
- 2540US6829403B2Optical switch having an array of optical fibers with respective, removable disposed mirrors and a lens disposed away from an end surface of each corresponding optical fiberFUJITSU LTD·Filed 2002·Granted Dec 7, 2004·0 cites·10 claims
- 2640US2005094272A1Wavelength characteristic variable filter, optical amplifier, and optical communications apparatusFUJITSU LTD·Filed 2004·Application pending·0 cites
- 2738US2016246156A1Optical moduleFUJITSU OPTICAL COMPONENTS LTD·Filed 2015·Application pending·0 cites
- 2837US5739951APolarization independent optical deviceFUJITSU LTD·Filed 1997·Granted Apr 14, 1998·5 cites·3 claims
- 2930US5796887AOptical device for coupling and separating two light componentsFUJITSU LTD·Filed 1997·Granted Aug 18, 1998·1 cites·18 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →