Inventor · disambiguated record
Ryuichi Sugizaki
Also filed as: SUGIZAKI RYUICHI
49 granted patents·22 pending applications·764 citations·filing 1995–2025
98Inventor score
Top patents by PatentIndex Score
71 records- 0197US9891378B2Cascaded core multicore fiber and manufacturing method for sameFURUKAWA ELECTRIC CO LTD·Filed 2017·Granted Feb 13, 2018·12 cites·10 claims
- 0295US7440167B2Optical fiber for Raman amplification, optical fiber coil, Raman amplifier, and optical communication systemFURUKAWA ELECTRIC CO LTD·Filed 2007·Granted Oct 21, 2008·24 cites·12 claims
- 0394US7295741B2Optical fiber, optical fiber ribbon, and optical interconnection systemFURUKAWA ELECTRIC CO LTD·Filed 2005·Granted Nov 13, 2007·38 cites·20 claims
- 0493US11940649B2Optical fiber bundle structure, optical connector, optical fiber connection structure, and method of manufacturing optical fiber bundle structureFURUKAWA ELECTRIC CO LTD·Filed 2021·Granted Mar 26, 2024·2 cites·9 claims
- 0593US7248399B2Optical fiber for Raman amplification, optical fiber coil, Raman amplifier, and optical communication systemFURUKAWA ELECTRIC CO LTD·Filed 2006·Granted Jul 24, 2007·17 cites·7 claims
- 0693US5995694AWavelength division multiplex communication link for optical transmissionFURUKAWA ELECTRIC CO LTD·Filed 1997·Granted Nov 30, 1999·131 cites·3 claims
- 0791US7574088B2Optical fiber and optical fiber ribbon, and optical interconnection systemFURUKAWA ELECTRIC CO LTD·Filed 2008·Granted Aug 11, 2009·32 cites·12 claims
- 0891US7366386B2Optical fiber and optical interconnection systemFURUKAWA ELECTRIC CO LTD·Filed 2005·Granted Apr 29, 2008·26 cites·21 claims
- 0991US7006742B2Highly nonlinear optical fiber and highly nonlinear optical fiber moduleFURUKAWA ELECTRIC CO LTD·Filed 2005·Granted Feb 28, 2006·29 cites·17 claims
- 1090US7878712B2Optical fiber, optical fiber ribbon, and optical interconnection systemFURUKAWA ELECTRIC CO LTD·Filed 2008·Granted Feb 1, 2011·26 cites·8 claims
- 1190US5673354ADispersion compensating optical fiberFURUKAWA ELECTRIC CO LTD·Filed 1996·Granted Sep 30, 1997·106 cites·4 claims
- 1290US5568583ADispersion compensating optical fiber for wavelength multiplex transmission and method using sameFURUKAWA ELECTRIC CO LTD·Filed 1995·Granted Oct 22, 1996·98 cites·10 claims
- 1389US7164830B2Nonlinear optical fiber and optical signal processing apparatus using the optical fiberFURUKAWA ELECTRIC CO LTD·Filed 2005·Granted Jan 16, 2007·22 cites·41 claims
- 1483US11378735B1Multi-core fiberFURUKAWA ELECTRIC CO LTD·Filed 2021·Granted Jul 5, 2022·1 cites·9 claims
- 1581US6404967B2Optical fiber and optical transmission line using the sameFURUKAWA ELECTRIC CO LTD·Filed 2001·Granted Jun 11, 2002·24 cites·18 claims
- 1680US12222541B2Optical fiber bundle structure, optical connector, optical fiber connection structure, and method of manufacturing optical fiber bundle structureFURUKAWA ELECTRIC CO LTD·Filed 2024·Granted Feb 11, 2025·0 cites·9 claims
- 1780US12204141B2Optical fiber bundle structure, optical connector, optical fiber connection structure, and method of manufacturing optical fiber bundle structureFURUKAWA ELECTRIC CO LTD·Filed 2024·Granted Jan 21, 2025·0 cites·2 claims
- 1877US9722388B2Multi-core optical amplifying fiber device and multi-core optical fiber amplifierFURUKAWA ELECTRIC CO LTD·Filed 2015·Granted Aug 1, 2017·2 cites·12 claims
- 1977US7787732B2Optical fiber and optical fiber ribbon, and optical interconnection systemFURUKAWA ELECTRIC CO LTD·Filed 2008·Granted Aug 31, 2010·8 cites·8 claims
- 2076US9225141B2Multi-core amplification optical fiber and multi-core optical fiber amplifierFURUKAWA ELECTRIC CO LTD·Filed 2014·Granted Dec 29, 2015·3 cites·10 claims
- 2175US12455412B2Multicore fiberFURUKAWA ELECTRIC CO LTD·Filed 2023·Granted Oct 28, 2025·0 cites·7 claims
- 2273US12481097B2Multicore fiber, manufacturing method for multicore fiber, multicore fiber preform, and manufacturing method for multicore fiber preformFURUKAWA ELECTRIC CO LTD·Filed 2023·Granted Nov 25, 2025·0 cites·10 claims
- 2373US7583878B2Optical fiber, optical fiber ribbon, and optical interconnection systemFURUKAWA ELECTRIC CO LTD·Filed 2008·Granted Sep 1, 2009·6 cites·18 claims
- 2473US7099545B2Single-mode optical fiberFURUKAWA ELECTRIC CO LTD·Filed 2004·Granted Aug 29, 2006·13 cites·7 claims
- 2573US5887104ADispersion compensating optical fiberFURUKAWA ELECTRIC CO LTD·Filed 1997·Granted Mar 23, 1999·40 cites·9 claims
- 2672US6684018B2Low-dispersion optical fiber and optical transmission system using the low-dispersion optical fiberFURUKAWA ELECTRIC CO LTD·Filed 2001·Granted Jan 27, 2004·13 cites·20 claims
- 2771US7689080B2Optical fiber ribbonFURUKAWA ELECTRIC CO LTD·Filed 2008·Granted Mar 30, 2010·5 cites·15 claims
- 2870US2025023316A1Raman amplifier and method for designing raman amplifierFURUKAWA ELECTRIC CO LTD·Filed 2024·Application pending·0 cites
- 2969US6766087B2Nonlinear dispersion-shifted optical fiber, optical signal processing apparatus using said optical fiber and wavelength converter using said optical fiberFURUKAWA ELECTRIC CO LTD·Filed 2002·Granted Jul 20, 2004·10 cites·45 claims
- 3068US7715674B2Optical fiber and waveguideFURUKAWA ELECTRIC CO LTD·Filed 2006·Granted May 11, 2010·4 cites·28 claims
- 3168US7126748B2Optical fiber, optical fiber module, and Raman amplifierFURUKAWA ELECTRIC CO LTD·Filed 2004·Granted Oct 24, 2006·8 cites·21 claims
- 3268US7046885B2Optical fiber, Raman amplifier, and optical communication systemFURUKAWA ELECTRIC CO LTD·Filed 2003·Granted May 16, 2006·10 cites·9 claims
- 3367US12399317B2Optical fiber bundle structure, optical fiber connection structure, and optical fiber bundle structure manufacturing methodFURUKAWA ELECTRIC CO LTD·Filed 2023·Granted Aug 26, 2025·0 cites·13 claims
- 3467US12248171B2Multi-core optical amplifying fiber, multi-core optical fiber amplifier, and optical communication systemFURUKAWA ELECTRIC CO LTD·Filed 2022·Granted Mar 11, 2025·0 cites·13 claims
- 3567US9075185B2Hole-assisted optical fiberFURUKAWA ELECTRIC CO LTD·Filed 2013·Granted Jul 7, 2015·2 cites·3 claims
- 3667US7519255B2Optical fiberFURUKAWA ELECTRIC CO LTD·Filed 2006·Granted Apr 14, 2009·4 cites·2 claims
- 3767US2024014622A1Laser device and processing deviceFURUKAWA ELECTRIC CO LTD·Filed 2023·Application pending·0 cites
- 3865US5933561AOptical fiber connecting bodyFURUKAWA ELECTRIC CO LTD·Filed 1998·Granted Aug 3, 1999·27 cites·4 claims
- 3965US2024332884A1Light source, light source device, method of driving light source, raman amplifier, and raman amplification systemFURUKAWA ELECTRIC CO LTD·Filed 2024·Application pending·0 cites
- 4064US2023231629A1Light source, light source device, method of driving light source, raman amplifier, and raman amplification systemFURUKAWA ELECTRIC CO LTD·Filed 2023·Application pending·0 cites
- 4163US8181487B2Optical fiber preform manufacturing methodSUGIZAKI RYUICHI·Filed 2010·Granted May 22, 2012·1 cites·7 claims
- 4263US2023123319A1Optical amplifying fiber, optical fiber amplifier, and optical communication systemFURUKAWA ELECTRIC CO LTD·Filed 2022·Application pending·0 cites
- 4362US7925132B2Nonlinear optical fiber, nonlinear optical device, and optical signal processing apparatusFURUKAWA ELECTRIC CO LTD·Filed 2009·Granted Apr 12, 2011·2 cites·10 claims
- 4462US6766089B2Low-dispersion optical fiber and optical transmission system using the low-dispersion optical fiberFURUKAWA ELECTRIC CO LTD·Filed 2003·Granted Jul 20, 2004·7 cites·9 claims
- 4562US2025298183A1Multicore fiber and multicore fiber manufacturing methodFURUKAWA ELECTRIC CO LTD·Filed 2025·Application pending·0 cites
- 4662US2023038133A1Optical fiber amplification system and optical communication systemFURUKAWA ELECTRIC CO LTD·Filed 2022·Application pending·0 cites
- 4762US2023006410A1Optical amplifying fiber, optical fiber amplifier, and optical communication systemFURUKAWA ELECTRIC CO LTD·Filed 2022·Application pending·0 cites
- 4861US6668121B2Optical fiber, and dispersion compensator using same, optical transmission line using same and optical transmission system using sameFURUKAWA ELECTRIC CO LTD·Filed 2001·Granted Dec 23, 2003·7 cites·7 claims
- 4961US2024151897A1Multi-core fiber, pitch converter, optical fiber connection structure, and method of manufacturing optical fiber connection structureFURUKAWA ELECTRIC CO LTD·Filed 2024·Application pending·0 cites
- 5060US2024310575A1Optical fiber connection structure and manufacturing method thereofFURUKAWA ELECTRIC CO LTD·Filed 2024·Application pending·0 cites
Showing the top 50 of 71 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →