Inventor · disambiguated record
Takuji Nagashima
Also filed as: NAGASHIMA TAKUJI
15 granted patents·11 pending applications·12 citations·filing 2009–2022
86Inventor score
Files withSUMITOMO ELECTRIC INDUSTRIES21NAGASHIMA TAKUJI2NAKANISHI TETSUYA1SASAOKA EISUKE1TARU TOSHIKI1
Top patents by PatentIndex Score
26 records- 0182US10590024B2Production method for multicore optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2018·Granted Mar 17, 2020·1 cites·8 claims
- 0276US10520668B2Method for producing multicore optical fiber and multicore optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2019·Granted Dec 31, 2019·2 cites·7 claims
- 0375US8417077B2Optical branching device and optical communication system including the sameSASAOKA EISUKE·Filed 2011·Granted Apr 9, 2013·4 cites·8 claims
- 0470US8433166B2Multi-core optical fibreNAGASHIMA TAKUJI·Filed 2011·Granted Apr 30, 2013·3 cites·5 claims
- 0565US11130702B2Optical fiber manufacturing methodSUMITOMO ELECTRIC INDUSTRIES·Filed 2019·Granted Sep 28, 2021·0 cites·8 claims
- 0664US11820695B2Manufacturing method for preform of multi-core fiber and manufacturing method for multi-core fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2021·Granted Nov 21, 2023·0 cites·12 claims
- 0764US9128233B2Multi-core fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2013·Granted Sep 8, 2015·1 cites·12 claims
- 0862US9453979B2Multi-core optical fiber tapeSUMITOMO ELECTRIC INDUSTRIES·Filed 2012·Granted Sep 27, 2016·1 cites·3 claims
- 0962US2025052944A1Method for producing multicore optical fiber, and multicore optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2022·Application pending·0 cites
- 1061US11059737B2Method for manufacturing multicore optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2019·Granted Jul 13, 2021·0 cites·8 claims
- 1159US10662106B2Production method for multicore optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2018·Granted May 26, 2020·0 cites·4 claims
- 1258US11314015B2Multi-core optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2021·Granted Apr 26, 2022·0 cites·28 claims
- 1356US2011080590A1Method of manufacturing preform for optical waveguideSUMITOMO ELECTRIC INDUSTRIES·Filed 2009·Application pending·0 cites
- 1455US8655132B2Multi-core optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2013·Granted Feb 18, 2014·0 cites·8 claims
- 1553US10775541B2Optical-fiber output beam profile measurement method and optical-fiber output beam profile measurement apparatusSUMITOMO ELECTRIC INDUSTRIES·Filed 2018·Granted Sep 15, 2020·0 cites·20 claims
- 1651US10830966B2Optical connector manufacturing methodSUMITOMO ELECTRIC INDUSTRIES·Filed 2018·Granted Nov 10, 2020·0 cites·11 claims
- 1750US2022011499A1Cutting tool and method for manufacturing optical fiber preformSUMITOMO ELECTRIC INDUSTRIES·Filed 2021·Application pending·0 cites
- 1841US9891376B2Optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2016·Granted Feb 13, 2018·0 cites·14 claims
- 1941US2018282200A1Method of manufacturing coupled-core multi-core fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2018·Application pending·0 cites
- 2041US2020308042A1Method of manufacturing multicore optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2020·Application pending·0 cites
- 2140US2012236295A1Method of measuring bending performance of optical fiberNAKANISHI TETSUYA·Filed 2012·Application pending·0 cites
- 2240US2011222828A1Multi-core optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2011·Application pending·0 cites
- 2337US2013064513A1Optical fiberNAGASHIMA TAKUJI·Filed 2012·Application pending·0 cites
- 2436US2012230639A1Optical fiberTARU TOSHIKI·Filed 2012·Application pending·0 cites
- 2535US2016109650A1Optical fiber for fiber bragg gratingSUMITOMO ELECTRIC INDUSTRIES·Filed 2015·Application pending·0 cites
- 2635US2011194826A1Photonic crystal fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2010·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →