Inventor · disambiguated record
Takafumi Ohtsuka
Also filed as: OHTSUKA TAKAFUMI
15 granted patents·8 pending applications·6 citations·filing 2012–2024
84Inventor score
Files withSUMITOMO ELECTRIC INDUSTRIES23
Top patents by PatentIndex Score
23 records- 0191US11402585B2Optical connection structureSUMITOMO ELECTRIC INDUSTRIES·Filed 2020·Granted Aug 2, 2022·3 cites·19 claims
- 0269US12362530B2Optical amplifier and optical communication systemSUMITOMO ELECTRIC INDUSTRIES·Filed 2022·Granted Jul 15, 2025·0 cites·10 claims
- 0366US2024322516A1Optical fiber amplifier and rare-earth element doped multicore optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2024·Application pending·0 cites
- 0464US12345597B2Mode-dependent loss measurement device and mode-dependent loss measurement methodSUMITOMO ELECTRIC INDUSTRIES·Filed 2023·Granted Jul 1, 2025·0 cites·18 claims
- 0563US9326050B2Wavelength selective switch and method of manufacturing sameSUMITOMO ELECTRIC INDUSTRIES·Filed 2014·Granted Apr 26, 2016·1 cites·9 claims
- 0663US2023378712A1Gas laser and waste heat recovery systemSUMITOMO ELECTRIC INDUSTRIES·Filed 2023·Application pending·0 cites
- 0761US9372311B2Wavelength selective switchSUMITOMO ELECTRIC INDUSTRIES·Filed 2014·Granted Jun 21, 2016·1 cites·20 claims
- 0861US9151902B2Wavelength selective switchSUMITOMO ELECTRIC INDUSTRIES·Filed 2014·Granted Oct 6, 2015·1 cites·7 claims
- 0954US9482822B2Wavelength selector switchSUMITOMO ELECTRIC INDUSTRIES·Filed 2013·Granted Nov 1, 2016·0 cites·23 claims
- 1051US2020381885A1Optical amplifierSUMITOMO ELECTRIC INDUSTRIES·Filed 2020·Application pending·0 cites
- 1149US11927802B2Optical module and method for manufacturing optical moduleSUMITOMO ELECTRIC INDUSTRIES·Filed 2019·Granted Mar 12, 2024·0 cites·7 claims
- 1249US9606296B2Optical path control deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2016·Granted Mar 28, 2017·0 cites·9 claims
- 1347US9277301B2Optical unit and optical deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2014·Granted Mar 1, 2016·0 cites·12 claims
- 1447US2023275390A1Multi-core fiber module and multi-core fiber amplifierSUMITOMO ELECTRIC INDUSTRIES·Filed 2021·Application pending·0 cites
- 1543US10429235B2Optical fiber sensor system for strain detectionSUMITOMO ELECTRIC INDUSTRIES·Filed 2017·Granted Oct 1, 2019·0 cites·8 claims
- 1643US2021242655A1Optical fiber amplifierSUMITOMO ELECTRIC INDUSTRIES·Filed 2019·Application pending·0 cites
- 1742US9651436B2Interferometric optical fiber sensor system and interferometric optical fiber sensor headSUMITOMO ELECTRIC INDUSTRIES·Filed 2015·Granted May 16, 2017·0 cites·9 claims
- 1842US2016124155A1Wavelength selection switch and control method for phase modulation elementSUMITOMO ELECTRIC INDUSTRIES·Filed 2013·Application pending·0 cites
- 1941US2015286009A1Optical deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2012·Application pending·0 cites
- 2041US2015260920A1Optical path control deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2012·Application pending·0 cites
- 2140US10184788B2Optical fiber sensor system having a polarization separatorSUMITOMO ELECTRIC INDUSTRIES·Filed 2016·Granted Jan 22, 2019·0 cites·5 claims
- 2239US11088504B2Optical fiber amplifierSUMITOMO ELECTRIC INDUSTRIES·Filed 2019·Granted Aug 10, 2021·0 cites·14 claims
- 2333US11800802B2Radiation device and emission cooling deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2018·Granted Oct 24, 2023·0 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →