Inventor · disambiguated record
Ryoichi Kasahara
Also filed as: KASAHARA RYOICHI
40 granted patents·11 pending applications·36 citations·filing 2001–2020
95Inventor score
Files withNIPPON TELEGRAPH & TELEPHONE40OLYMPUS CORP3NTT ELECTRONICS CORP2SAIDA TAKASHI2KASAHARA RYOICHI1
Top patents by PatentIndex Score
51 records- 0189US11385521B2Wavelength conversion apparatusNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Jul 12, 2022·3 cites·10 claims
- 0284US11852953B2Optical element and manufacturing method thereofNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Dec 26, 2023·2 cites·12 claims
- 0384US11644735B2Wavelength conversion elementNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted May 9, 2023·2 cites·4 claims
- 0482US11740537B2Optical signal processing circuitNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Aug 29, 2023·2 cites·8 claims
- 0582US9116317B2Planar lightwave circuitNASU YUSUKE·Filed 2012·Granted Aug 25, 2015·6 cites·3 claims
- 0680US11971644B2Wavelength conversion deviceNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Apr 30, 2024·1 cites·9 claims
- 0777US11442225B2Wavelength conversion element and method for manufacturing wavelength conversion elementNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Sep 13, 2022·2 cites·14 claims
- 0876US11002995B2Phase modulator, control method for phase modulator, and fringe projector apparatusOLYMPUS CORP·Filed 2019·Granted May 11, 2021·1 cites·9 claims
- 0975US9459417B2Planar lightwave circuitNIPPON TELEGRAPH & TELEPHONE·Filed 2015·Granted Oct 4, 2016·2 cites·11 claims
- 1071US9116291B2Integrated optical moduleNIPPON TELEGRAPH & TELEPHONE·Filed 2013·Granted Aug 25, 2015·2 cites·3 claims
- 1167US11892745B2Wavelength conversion element and method for manufacturing sameNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Feb 6, 2024·0 cites·8 claims
- 1267US8913889B2Optical moduleNIPPON TELEGRAPH & TELEPHONE·Filed 2013·Granted Dec 16, 2014·2 cites·7 claims
- 1363US6625370B2Optical waveguide and fabricating method thereof, and optical waveguide circuitNIPPON TELEGRAPH & TELEPHONE·Filed 2001·Granted Sep 23, 2003·8 cites·25 claims
- 1461US9235003B2Waveguide-type polarization beam splitterSAIDA TAKASHI·Filed 2012·Granted Jan 12, 2016·1 cites·10 claims
- 1560US11733584B2Wavelength conversion apparatusNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Aug 22, 2023·0 cites·7 claims
- 1660US9002161B2Optical moduleKASAHARA RYOICHI·Filed 2011·Granted Apr 7, 2015·2 cites·15 claims
- 1759US12007666B2Wavelength conversion element and method for producing sameNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Jun 11, 2024·0 cites·13 claims
- 1859US9182559B2Light-receiving package for flat-plate mounting, and optical moduleNTT ELECTRONICS CORP·Filed 2012·Granted Nov 10, 2015·0 cites·5 claims
- 1958US12346000B2Planar optical waveguide device for measuring amplitude phase of squeezed lightNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Jul 1, 2025·0 cites·8 claims
- 2057US11835768B2Filling resin and optical waveguide circuit filled with filling resinNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Dec 5, 2023·0 cites·11 claims
- 2156US12339564B2Wavelength conversion apparatusNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Jun 24, 2025·0 cites·6 claims
- 2255US12044883B2Optical waveguide and manufacturing method thereofNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Jul 23, 2024·0 cites·11 claims
- 2355US11988873B2End structure of a waveguideNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted May 21, 2024·0 cites·8 claims
- 2455US11960152B2Method for adjusting transmitted wavelength of signal light transmitted through optical waveguide deviceNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Apr 16, 2024·0 cites·8 claims
- 2555US2015183060A1Method of manufacturing an optical moduleNTT ELECTRONICS CORP·Filed 2015·Application pending·0 cites
- 2653US11815785B2Wavelength conversion optical elementNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Nov 14, 2023·0 cites·7 claims
- 2753US10969281B2Illumination apparatusOLYMPUS CORP·Filed 2019·Granted Apr 6, 2021·0 cites·6 claims
- 2851US11387909B2Optical signal transmitterNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Jul 12, 2022·0 cites·12 claims
- 2951US9560763B2Package for optical moduleNIPPON TELEGRAPH & TELEPHONE·Filed 2013·Granted Jan 31, 2017·0 cites·5 claims
- 3050US11733469B2Planar lightwave circuit and optical deviceNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Aug 22, 2023·0 cites·19 claims
- 3149US11768421B2Wavelength conversion deviceNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Sep 26, 2023·0 cites·4 claims
- 3249US11635641B2Planar-lightwave-type optical deviceNIPPON TELEGRAPH & TELEPHONE·Filed 2018·Granted Apr 25, 2023·0 cites·11 claims
- 3348US2021302153A1Variable Interference-Fringe-Interval Optical Circuit and Fringe Projection DeviceNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Application pending·0 cites
- 3446US2022390670A1Optical ModuleNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Application pending·0 cites
- 3545US11888528B2Optical communication systemNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Jan 30, 2024·0 cites·17 claims
- 3645US8569674B2Multiplexed photocurrent monitoring circuit comprising current mirror circuitsSAITO RYOSUKE·Filed 2007·Granted Oct 29, 2013·0 cites·13 claims
- 3745US2015192736A1Integrated optical moduleNIPPON TELEGRAPH & TELEPHONE·Filed 2013·Application pending·0 cites
- 3844US12085836B2Optical amplifierNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Sep 10, 2024·0 cites·5 claims
- 3944US11269139B2Waveguide type optical interferometer circuitNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Mar 8, 2022·0 cites·19 claims
- 4044US9323000B2Waveguide-type polarization beam splitterSAIDA TAKASHI·Filed 2012·Granted Apr 26, 2016·0 cites·12 claims
- 4144US2023251432A1Optical ModuleNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Application pending·0 cites
- 4244US2022179151A1Optical waveguide and manufacturing method thereofNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Application pending·0 cites
- 4344US2022075120A1Optical fiber and manufacturing method thereofNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Application pending·0 cites
- 4443US11324435B2Heartbeat detection method and heartbeat detection deviceNIPPON TELEGRAPH & TELEPHONE·Filed 2017·Granted May 10, 2022·0 cites·6 claims
- 4543US2012288242A1Optical moduleNISHIZAWA TOSHIKI·Filed 2012·Application pending·0 cites
- 4642US2022200229A1Optical AmplifierNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Application pending·0 cites
- 4742US2019339069A1Optical measurement apparatusOLYMPUS CORP·Filed 2019·Application pending·0 cites
- 4840US11076793B2Respiration estimation method and apparatusNIPPON TELEGRAPH & TELEPHONE·Filed 2016·Granted Aug 3, 2021·0 cites·2 claims
- 4939US12032269B2Wavelength conversion apparatusNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Jul 9, 2024·0 cites·6 claims
- 5039US2022236482A1Optical Waveguide ChipNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Application pending·0 cites
Showing the top 50 of 51 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →