Inventor · disambiguated record
Tatsuya Nagahama
Also filed as: NAGAHAMA TATSUYA
56 granted patents·10 pending applications·529 citations·filing 1974–2024
98Inventor score
Top patents by PatentIndex Score
66 records- 0199USD972497SBatteryMAKITA CORP·Filed 2021·Granted Dec 13, 2022·37 cites·1 claims
- 0299USD945959SBatteryMAKITA CORP·Filed 2020·Granted Mar 15, 2022·48 cites·1 claims
- 0398USD935996SBatteryMAKITA CORP·Filed 2020·Granted Nov 16, 2021·44 cites·1 claims
- 0497US10396573B2Portable battery pack charging system, method for recharging a battery pack, and adapter thereforMAKITA CORP·Filed 2017·Granted Aug 27, 2019·23 cites·20 claims
- 0596US10608500B2Electric power toolMAKITA CORP·Filed 2016·Granted Mar 31, 2020·9 cites·10 claims
- 0696US10090692B2Charger for hand-held power tool, power tool system and method of charging a power tool batteryMAKITA CORP·Filed 2017·Granted Oct 2, 2018·17 cites·23 claims
- 0796US9948162B2Power toolMAKITA CORP·Filed 2014·Granted Apr 17, 2018·27 cites·19 claims
- 0896US9780583B2Portable battery pack charging system, method for recharging a battery pack, and adapter thereforFURUI NOBUYASU·Filed 2012·Granted Oct 3, 2017·55 cites·26 claims
- 0996US8476577B2Optical encoderNAGAHAMA TATSUYA·Filed 2010·Granted Jul 2, 2013·50 cites·15 claims
- 1095US10101572B2Variable focal length lens system with multi-level extended depth of field image processingMITUTOYO CORP·Filed 2016·Granted Oct 16, 2018·22 cites·20 claims
- 1194US10903718B2Power toolMAKITA CORP·Filed 2018·Granted Jan 26, 2021·6 cites·16 claims
- 1294US10749405B2Power toolMAKITA CORP·Filed 2018·Granted Aug 18, 2020·6 cites·10 claims
- 1394US9577450B2Charger for hand-held power tool, power tool system and method of charging a power tool batteryYOSHIKAWA SHUJI·Filed 2012·Granted Feb 21, 2017·34 cites·31 claims
- 1494US2025046929A1Battery packMAKITA CORP·Filed 2024·Application pending·0 cites
- 1593US12100981B2Power tool system having receptacle for wireless communication adapterMAKITA CORP·Filed 2023·Granted Sep 24, 2024·1 cites·20 claims
- 1692USD964270SBatteryMAKITA CORP·Filed 2022·Granted Sep 20, 2022·2 cites·1 claims
- 1790US11114870B2Power tool system and battery pack therefor having wireless communicatorMAKITA CORP·Filed 2020·Granted Sep 7, 2021·2 cites·21 claims
- 1889US10749360B2Power tool system and battery pack therefor having wireless communicatorMAKITA CORP·Filed 2019·Granted Aug 18, 2020·3 cites·20 claims
- 1986US11715995B2Power toolMAKITA CORP·Filed 2020·Granted Aug 1, 2023·1 cites·11 claims
- 2086US2024380225A1Wireless communication adapter having self-contained power supplyMAKITA CORP·Filed 2024·Application pending·0 cites
- 2184US8891090B2Light-interference measuring apparatusNAGAHAMA TATSUYA·Filed 2011·Granted Nov 18, 2014·9 cites·5 claims
- 2283US11677116B2Battery packMAKITA CORP·Filed 2020·Granted Jun 13, 2023·1 cites·18 claims
- 2380US12341406B2Power toolMAKITA CORP·Filed 2023·Granted Jun 24, 2025·0 cites·18 claims
- 2478US8637805B2Optical encoder using off-axis imaging through a lensALTENDORF ERIC HERBERT·Filed 2010·Granted Jan 28, 2014·5 cites·23 claims
- 2578US6857762B2Ring illuminatorMITUTOYO CORP·Filed 2003·Granted Feb 22, 2005·47 cites·20 claims
- 2677US12300833B2Battery packMAKITA CORP·Filed 2020·Granted May 13, 2025·0 cites·27 claims
- 2777US12155078B2Battery packMAKITA CORP·Filed 2020·Granted Nov 26, 2024·0 cites·24 claims
- 2877US11695182B2Battery packMAKITA CORP·Filed 2020·Granted Jul 4, 2023·0 cites·21 claims
- 2977US7329859B2Photoelectric encoderMITUTOYO CORP·Filed 2006·Granted Feb 12, 2008·8 cites·17 claims
- 3076US9198347B2Work machine having operation rodMAKITA CORP·Filed 2013·Granted Dec 1, 2015·8 cites·20 claims
- 3175US11721990B2Power tool system having wireless communicatorMAKITA CORP·Filed 2021·Granted Aug 8, 2023·0 cites·27 claims
- 3274US9776338B2Power tool, such as a portable circular saw, having improved braking and coolingMAKITA CORP·Filed 2014·Granted Oct 3, 2017·6 cites·19 claims
- 3372US10886816B2Power toolMAKITA CORP·Filed 2018·Granted Jan 5, 2021·2 cites·10 claims
- 3472US9726473B2Light interference measuring device and program thereforMITUTOYO CORP·Filed 2014·Granted Aug 8, 2017·3 cites·12 claims
- 3572US8033673B2Illumination device and vision measuring instrumentMITUTOYO CORP·Filed 2008·Granted Oct 11, 2011·6 cites·7 claims
- 3672US2024106092A1Battery pack and adapterMAKITA CORP·Filed 2023·Application pending·0 cites
- 3767US8258448B2Autofocus device with contrast enhancementNAGAHAMA TATSUYA·Filed 2009·Granted Sep 4, 2012·4 cites·2 claims
- 3865US8553232B2Interference objective lens unit and light-interference measuring apparatus using thereofMATSUMIYA SADAYUKI·Filed 2011·Granted Oct 8, 2013·2 cites·8 claims
- 3965US7015447B2Illuminance calibrating method of illuminator, illuminance calibration controller of illuminator, illuminance calibrating program of illuminator, recording medium storing the program and measuring toolMITUTOYO CORP·Filed 2004·Granted Mar 21, 2006·10 cites·9 claims
- 4064US2024006699A1Battery packMAKITA CORP·Filed 2021·Application pending·0 cites
- 4162US9733464B2Focus detection unit and optical apparatusMITUTOYO CORP·Filed 2015·Granted Aug 15, 2017·1 cites·16 claims
- 4262US6639653B2Double telecentric objective lensMITUTOYO CORP·Filed 2002·Granted Oct 28, 2003·9 cites·1 claims
- 4361US11467384B2Telecentric optical apparatusMITUTOYO CORP·Filed 2019·Granted Oct 11, 2022·0 cites·11 claims
- 4461US8658964B2Photoelectric encoder with optical gratingKANEKO EMI·Filed 2010·Granted Feb 25, 2014·2 cites·13 claims
- 4560US9170196B2Optical measuring deviceMITUTOYO CORP·Filed 2014·Granted Oct 27, 2015·0 cites·6 claims
- 4660US9006657B2Optical measuring deviceOKABE KENJI·Filed 2011·Granted Apr 14, 2015·1 cites·3 claims
- 4758US8953170B2White-light interferometric measuring deviceMITUTOYO CORP·Filed 2013·Granted Feb 10, 2015·1 cites·8 claims
- 4857US11619769B2Adapter optical system and focal length variable optical systemMITUTOYO CORP·Filed 2020·Granted Apr 4, 2023·0 cites·3 claims
- 4956US4046677AMethod for separating large-sized film-like plasticsMITSUI MINING & SMELTING CO·Filed 1974·Granted Sep 6, 1977·12 cites·9 claims
- 5053US12107449B2Electrical-device system and detachable DC power sourceMAKITA CORP·Filed 2021·Granted Oct 1, 2024·0 cites·20 claims
Showing the top 50 of 66 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →