Inventor · disambiguated record
Yuichiro Ikuma
Also filed as: IKUMA YUICHIRO
14 granted patents·9 pending applications·6 citations·filing 2014–2022
83Inventor score
Top patents by PatentIndex Score
23 records- 0185US12099266B2Optical circuit with common ground configuration for resistors and thermo-optic phase shiftersNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Sep 24, 2024·2 cites·10 claims
- 0284US11982839B2Optical 90 degree hybrid circuitNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted May 14, 2024·2 cites·9 claims
- 0375US12038614B2Optical fiber array and connecting method thereofNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Jul 16, 2024·2 cites·6 claims
- 0459US12124086B2Optical fiber connection structureNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Oct 22, 2024·0 cites·4 claims
- 0558US12248181B2Optical moduleNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Mar 11, 2025·0 cites·6 claims
- 0656US12222567B2Optical circuit moduleNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Feb 11, 2025·0 cites·6 claims
- 0755US11835761B2Planar optical waveguide circuitNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Dec 5, 2023·0 cites·18 claims
- 0854US2025380515A1Photo detectorNTT INC·Filed 2022·Application pending·0 cites
- 0952US2025370033A1Optical Semiconductor Integrated CircuitNIPPON TELEGRAPH & TELEPHONE·Filed 2022·Application pending·0 cites
- 1052US2025386601A1PhotodetectorNIPPON TELEGRAPH & TELEPHONE·Filed 2022·Application pending·0 cites
- 1151US9967050B2Optical signal processing deviceNIPPON TELEGRAPH & TELEPHONE·Filed 2014·Granted May 8, 2018·0 cites·19 claims
- 1250US11982837B2Interposer circuitNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted May 14, 2024·0 cites·7 claims
- 1349US11525971B2Insertion/removal error prevention systemNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Dec 13, 2022·0 cites·13 claims
- 1449US2025123321A1Optical Inspection Circuit and Method of Manufacturing an Optical Circuit ChipNIPPON TELEGRAPH & TELEPHONE·Filed 2021·Application pending·0 cites
- 1548US10254625B2Optical signal processing deviceNIPPON TELEGRAPH & TELEPHONE·Filed 2016·Granted Apr 9, 2019·0 cites·15 claims
- 1648US2025284174A1Optical CircuitNIPPON TELEGRAPH & TELEPHONE·Filed 2022·Application pending·0 cites
- 1747US11509396B2Polarization multi/demultiplexed optical transceiver circuitNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Nov 22, 2022·0 cites·8 claims
- 1845US2021286173A1Cleaning body and cleaning deviceNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Application pending·0 cites
- 1944US12107626B2Wavelength monitoring device and controlling method thereofNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Oct 1, 2024·0 cites·4 claims
- 2043US2024201521A1Optical Phase Shifter, Optical Switch and 90 Degrees Optical HybridNIPPON TELEGRAPH & TELEPHONE·Filed 2021·Application pending·0 cites
- 2142US11973535B2Wavelength monitoring circuitNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Apr 30, 2024·0 cites·9 claims
- 2239US2022334309A1Optical Waveguide ElementNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Application pending·0 cites
- 2336US2021258203A1Missing alert handling system and missing alert handling methodNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →