Inventor · disambiguated record
Keita Yamaguchi
Also filed as: YAMAGUCHI KEITA
31 granted patents·12 pending applications·45 citations·filing 2001–2025
94Inventor score
Files withNIPPON TELEGRAPH & TELEPHONE25MITSUBISHI ELECTRIC CORP3PARAMOUNT BED KK3HITACHI LTD2MITSUBISHI CHEM CORP2
Top patents by PatentIndex Score
43 records- 0183US10951793B2Imaging device, imaging method, and image processing device generating a complex sensor imageHITACHI LTD·Filed 2019·Granted Mar 16, 2021·4 cites·15 claims
- 0282US11881897B2Optical and electronic integrated switch and optical network systemNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Jan 23, 2024·2 cites·8 claims
- 0381US11979694B2Optical and electronic integrated switchNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted May 7, 2024·2 cites·7 claims
- 0481US11930309B2Optical and electronic integrated switchNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Mar 12, 2024·2 cites·11 claims
- 0579US10965375B2Optical node deviceNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Mar 30, 2021·3 cites·7 claims
- 0679US9946710B2Language conversion apparatus, language conversion method, and language conversion programSOFTBANK CORP·Filed 2015·Granted Apr 17, 2018·4 cites·5 claims
- 0777US10797817B2Optical signal processing deviceNIPPON TELEGRAPH & TELEPHONE·Filed 2017·Granted Oct 6, 2020·1 cites·11 claims
- 0876US10887504B2Distance measurement device and distance measurement methodHITACHI LTD·Filed 2018·Granted Jan 5, 2021·2 cites·18 claims
- 0976US8431270B2Composite graphite particles for nonaqueous secondary battery, negative-electrode material containing the same, negative electrode, and nonaqueous secondary batteryMATSUMOTO HITOSHI·Filed 2007·Granted Apr 30, 2013·3 cites·26 claims
- 1075US12092870B2Optical waveguideNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Sep 17, 2024·2 cites·9 claims
- 1174US2025386983A1Information collection apparatus and apparatus attaching methodPARAMOUNT BED KK·Filed 2025·Application pending·0 cites
- 1274US2024422097A1Optical and electronic integrated switchNIPPON TELEGRAPH & TELEPHONE·Filed 2024·Application pending·0 cites
- 1373US8637187B2Negative electrode material for lithium secondary battery, method for producing same, negative electrode for lithium secondary battery using same and lithium secondary batteryFUSE TOORU·Filed 2005·Granted Jan 28, 2014·5 cites·9 claims
- 1470US9588300B2Optical input/output deviceNIPPON TELEGRAPH & TELEPHONE·Filed 2013·Granted Mar 7, 2017·3 cites·6 claims
- 1566US12435501B2Information processing apparatus, information processing method, and non-transitory computer-readable mediumPARAMOUNT BED KK·Filed 2022·Granted Oct 7, 2025·0 cites·17 claims
- 1664US12414660B2Information collection apparatus and apparatus attaching methodPARAMOUNT BED KK·Filed 2021·Granted Sep 16, 2025·0 cites·10 claims
- 1762US8647776B2Carbon material for lithium ion secondary batteryYAMADA SHUNSUKE·Filed 2011·Granted Feb 11, 2014·1 cites·7 claims
- 1860US8974968B2Composite graphite particle for nonaqueous secondary battery, negative electrode material containing the same, negative electrode and nonaqueous secondary batteryOKANISHI KENGO·Filed 2009·Granted Mar 10, 2015·2 cites·19 claims
- 1959US11977315B2Optical moduleNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted May 7, 2024·0 cites·6 claims
- 2059US11740491B2Optical module and manufacturing method thereofNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Aug 29, 2023·0 cites·6 claims
- 2158US12107762B2Optical and electronic integrated switchNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Oct 1, 2024·0 cites·6 claims
- 2255US12032231B2Optical signal processing apparatus and manufacturing method thereofNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Jul 9, 2024·0 cites·8 claims
- 2355US11194093B2Optical switch array and multicast switchNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Dec 7, 2021·0 cites·12 claims
- 2455US6450298B1Communications control system for elevatorsMITSUBISHI ELECTRIC CORP·Filed 2001·Granted Sep 17, 2002·9 cites·5 claims
- 2552US11405702B2Optical signal processing device and method for controlling sameNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Aug 2, 2022·0 cites·2 claims
- 2650US12007665B2Optical signal processing apparatusNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Jun 11, 2024·0 cites·8 claims
- 2748US12022246B2Optical signal processing apparatusNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Jun 25, 2024·0 cites·15 claims
- 2848US2025020865A1Waveguide-Type Optical CouplerNIPPON TELEGRAPH & TELEPHONE·Filed 2021·Application pending·0 cites
- 2947US2011059371A1Multi-layer structured carbonaceous material, process for producing the same, and nonaqueous secondary battery adopting the sameMITSUBISHI CHEM CORP·Filed 2009·Application pending·0 cites
- 3046US12306438B2Optical waveguideNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted May 20, 2025·0 cites·8 claims
- 3146US2024085627A1Manufacturing Apparatus of Optical Circuit and Manufacturing Method of Optical CircuitNIPPON TELEGRAPH & TELEPHONE·Filed 2021·Application pending·0 cites
- 3246US2024044941A1Probe Card and Method of Manufacturing ThereofNIPPON TELEGRAPH & TELEPHONE·Filed 2021·Application pending·0 cites
- 3345US11216371B2Cache memory and method for controlling the sameMITSUBISHI ELECTRIC CORP·Filed 2017·Granted Jan 4, 2022·0 cites·8 claims
- 3445US2023251422A1Optical CircuitNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Application pending·0 cites
- 3544US11112561B2Variable wavelength filterNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Sep 7, 2021·0 cites·11 claims
- 3644US2017068764A1Circuit design device and circuit design programMITSUBISHI ELECTRIC CORP·Filed 2014·Application pending·0 cites
- 3744US2024192663A1Control Device for Computer DeviceNIPPON TELEGRAPH & TELEPHONE·Filed 2021·Application pending·0 cites
- 3843US9346928B2Packing sheetYAMAGUCHI KEITA·Filed 2012·Granted May 24, 2016·0 cites·12 claims
- 3943US2024201521A1Optical Phase Shifter, Optical Switch and 90 Degrees Optical HybridNIPPON TELEGRAPH & TELEPHONE·Filed 2021·Application pending·0 cites
- 4041US2007128518A1Negative electrode material for lithium secondary battery, method for producing same, negative electrode for lithium secondary battery using same, and lithium secondary batteryMITSUBISHI CHEM CORP·Filed 2005·Application pending·0 cites
- 4141US2022014301A1Optical communication nodeNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Application pending·0 cites
- 4237US11422372B2Distance measurement device, head-mounted display device, mobile information terminal, image display device, surroundings monitoring system, and distance measurement methodMAXELL LTD·Filed 2017·Granted Aug 23, 2022·0 cites·18 claims
- 4331US8404383B2Negative electrode material for nonaqueous secondary cells, negative electrode for nonaqueous secondary cells, and nonaqueous secondary cellONISHI NOBUYUKI·Filed 2005·Granted Mar 26, 2013·0 cites·16 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →