Inventor · disambiguated record
Yuji Nakagawa
Also filed as: MAEDA TAKEO · NAKAGAWA YUJI
76 granted patents·21 pending applications·401 citations·filing 1978–2025
99Inventor score
Top patents by PatentIndex Score
97 records- 0199US11393493B1Magnetic head and magnetic recording deviceTOSHIBA KK·Filed 2021·Granted Jul 19, 2022·17 cites·20 claims
- 0297US11721359B2Magnetic head and magnetic recording deviceTOSHIBA KK·Filed 2022·Granted Aug 8, 2023·3 cites·12 claims
- 0396US11631423B2Magnetic recording deviceTOSHIBA KK·Filed 2022·Granted Apr 18, 2023·7 cites·21 claims
- 0494US12080325B2Magnetic head and magnetic recording deviceTOSHIBA KK·Filed 2023·Granted Sep 3, 2024·1 cites·17 claims
- 0590US11710501B2Magnetic head and magnetic recording deviceTOSHIBA KK·Filed 2022·Granted Jul 25, 2023·2 cites·25 claims
- 0689US12068004B2Magnetic recording deviceTOSHIBA KK·Filed 2023·Granted Aug 20, 2024·2 cites·20 claims
- 0786US12190917B2Magnetic head with multilayer configuration between magnetic poles and magnetic recording deviceTOSHIBA KK·Filed 2023·Granted Jan 7, 2025·2 cites·14 claims
- 0886US6775486B2Image forming apparatusSHARP KK·Filed 2003·Granted Aug 10, 2004·23 cites·7 claims
- 0985US6542431B2Semiconductor memory device and method for selecting multiple word lines in a semiconductor memory deviceFUJITSU LTD·Filed 2001·Granted Apr 1, 2003·30 cites·7 claims
- 1083US12308051B2Magnetic head with multilayer configuration between magnetic poles and magnetic recording deviceTOSHIBA KK·Filed 2023·Granted May 20, 2025·1 cites·10 claims
- 1183US12154602B2Magnetic head and magnetic recording deviceTOSHIBA KK·Filed 2023·Granted Nov 26, 2024·1 cites·7 claims
- 1283US7082027B2Proton-conducting electric double layer capacitor using electrolytic solutionNEC TOKIN CORP·Filed 2005·Granted Jul 25, 2006·11 cites·6 claims
- 1381US12165677B2Magnetic head with stacked body configurations and magnetic recording device including the sameTOSHIBA KK·Filed 2023·Granted Dec 10, 2024·1 cites·15 claims
- 1481US11881234B2Magnetic head and magnetic recording deviceTOSHIBA KK·Filed 2022·Granted Jan 23, 2024·1 cites·19 claims
- 1581US6830848B1Molded electrode, method for production thereof, and secondary battery using thereofNEC TOKIN CORP·Filed 2000·Granted Dec 14, 2004·17 cites·31 claims
- 1680US7085504B2Image forming apparatusSHARP KK·Filed 2004·Granted Aug 1, 2006·16 cites·7 claims
- 1777US12437779B2Magnetic head and magnetic recording deviceTOSHIBA KK·Filed 2024·Granted Oct 7, 2025·0 cites·17 claims
- 1877US6531933B2Filter unit having two attenuation polesSANYO ELECTRIC CO·Filed 2001·Granted Mar 11, 2003·17 cites·5 claims
- 1974US8461864B2Receiving circuit and methods for controlling and testing the sameNAKAGAWA YUJI·Filed 2011·Granted Jun 11, 2013·4 cites·10 claims
- 2074US2025239272A1Magnetic head and magnetic recording deviceTOSHIBA KK·Filed 2025·Application pending·0 cites
- 2172US6869731B2Electrolytic solution and electrochemical cell using the sameNEC TOKIN CORP·Filed 2002·Granted Mar 22, 2005·16 cites·11 claims
- 2271US12033676B2Magnetic head and magnetic recording deviceTOSHIBA KK·Filed 2022·Granted Jul 9, 2024·0 cites·20 claims
- 2371US6813203B2Semiconductor memory device and method for testing semiconductor memory deviceFUJITSU LTD·Filed 2003·Granted Nov 2, 2004·17 cites·21 claims
- 2470US12367898B2Magnetic device, magnetic head, and magnetic recording deviceTOSHIBA KK·Filed 2024·Granted Jul 22, 2025·0 cites·18 claims
- 2568US12165676B2Magnetic head and magnetic recording deviceTOSHIBA KK·Filed 2023·Granted Dec 10, 2024·0 cites·20 claims
- 2668US7764560B2Semiconductor memory device and refresh method for the sameFUJITSU SEMICONDUCTOR LTD·Filed 2008·Granted Jul 27, 2010·4 cites·5 claims
- 2768US5966556AMethod of duplex copying documentsSHARP KK·Filed 1998·Granted Oct 12, 1999·19 cites·4 claims
- 2867US7248525B2Semiconductor memory device and refresh method for the sameFUJITSU LTD·Filed 2005·Granted Jul 24, 2007·4 cites·8 claims
- 2967US6998190B2Battery having a sheet current collector fluid-tightly separating basic cellsNEC TOKIN CORP·Filed 2003·Granted Feb 14, 2006·7 cites·10 claims
- 3066US12300279B2Magnetic head and magnetic recording deviceTOSHIBA KK·Filed 2023·Granted May 13, 2025·0 cites·9 claims
- 3166US7895484B2Semiconductor device, memory system and control method of the semiconductor deviceFUJITSU SEMICONDUCTOR LTD·Filed 2008·Granted Feb 22, 2011·5 cites·20 claims
- 3266US6788610B2Semiconductor memory device and method for selecting multiple word lines in a semiconductor memory deviceFUJITSU LTD·Filed 2003·Granted Sep 7, 2004·11 cites·1 claims
- 3364US12365870B2Storage stabilizer for extracellular vesicle and storage stabilization method for extracellular vesicleFUJIFILM WAKO PURE CHEMICAL CORP·Filed 2021·Granted Jul 22, 2025·0 cites·9 claims
- 3464US8289598B2Image recording method, image recording apparatus, and image recording mediumSHIRAKURA AKIRA·Filed 2008·Granted Oct 16, 2012·1 cites·18 claims
- 3562US6412548B1Water tube protective refractory structure and method of assembling the sameMITSUBISHI HEAVY IND LTD·Filed 1998·Granted Jul 2, 2002·19 cites·12 claims
- 3662US2025178227A1Cutting device and label manufacturing methodFUJI SEAL INT INC·Filed 2023·Application pending·0 cites
- 3761US11521644B2Magnetic head and magnetic recording deviceTOSHIBA KK·Filed 2021·Granted Dec 6, 2022·0 cites·20 claims
- 3861US7204061B2Fireproof structure and installation method for protecting water pipesMITSUBISHI HEAVY IND LTD·Filed 2002·Granted Apr 17, 2007·9 cites·5 claims
- 3960US9186260B2Implant and implant assemblyTERUMO CORP·Filed 2014·Granted Nov 17, 2015·1 cites·9 claims
- 4060US6971169B2Heat-resistant assembly for protecting boiler tubes and method of assembling sameMITSUBISHI HEAVY IND LTD·Filed 2002·Granted Dec 6, 2005·8 cites·3 claims
- 4160US6876820B2Image forming apparatusSHARP KK·Filed 2004·Granted Apr 5, 2005·7 cites·16 claims
- 4257US12354626B2Magnetic recording device with magnetic element configuration detailsTOSHIBA KK·Filed 2024·Granted Jul 8, 2025·0 cites·20 claims
- 4356US2025292790A1Magnetic head and magnetic recording deviceTOSHIBA KK·Filed 2025·Application pending·0 cites
- 4455US6678150B2Capacitor element using quinoxaline compoundNEC TOKIN CORP·Filed 2003·Granted Jan 13, 2004·2 cites·10 claims
- 4555US6664619B2Laminate film packaged storage device and fabricating method thereofNEC TOKIN CORP·Filed 2002·Granted Dec 16, 2003·2 cites·13 claims
- 4654US8870845B2Method for alleviating condition of spinal canal stenosis by local administration of medicineNAKAGAWA YUJI·Filed 2012·Granted Oct 28, 2014·0 cites·5 claims
- 4754US2025232788A1Magnetic head and magnetic recording deviceTOSHIBA KK·Filed 2024·Application pending·0 cites
- 4853US7596361B2Low noise amplification circuitFURUKAWA ELECTRIC CO LTD·Filed 2006·Granted Sep 29, 2009·1 cites·6 claims
- 4953US6875244B2Method of producing electric cells using substance injectionNEC TOKIN CORP·Filed 2002·Granted Apr 5, 2005·1 cites·20 claims
- 5053US6569571B2Electrode, secondary battery and method of producing the sameNEC TOKIN CORP·Filed 2000·Granted May 27, 2003·1 cites·30 claims
Showing the top 50 of 97 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Yuji Nakagawa files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →