Inventor · disambiguated record
Tadaaki Oikawa
Also filed as: OIKAWA TADAAKI
51 granted patents·26 pending applications·463 citations·filing 2000–2025
98Inventor score
Files withFUJI ELECTRIC CO LTD24KIOXIA CORP24TOSHIBA MEMORY CORP15FUJI ELEC DEVICE TECH CO LTD6FUJI ELECTRIC CO LD1
Top patents by PatentIndex Score
77 records- 0197US11329215B2Magnetic memory deviceKIOXIA CORP·Filed 2020·Granted May 10, 2022·4 cites·20 claims
- 0297US10873021B2Magnetic device and manufacturing method of magnetic deviceTOSHIBA MEMORY CORP·Filed 2018·Granted Dec 22, 2020·12 cites·13 claims
- 0397US10840434B2Storage deviceTOSHIBA MEMORY CORP·Filed 2019·Granted Nov 17, 2020·13 cites·16 claims
- 0497US10468170B2Magnetic deviceTOSHIBA MEMORY CORP·Filed 2018·Granted Nov 5, 2019·12 cites·18 claims
- 0596US11127445B2Magnetic deviceTOSHIBA MEMORY CORP·Filed 2019·Granted Sep 21, 2021·11 cites·15 claims
- 0695US11404098B2Memory deviceKIOXIA CORP·Filed 2020·Granted Aug 2, 2022·3 cites·20 claims
- 0795US10263178B2Magnetic memory deviceTOSHIBA MEMORY CORP·Filed 2017·Granted Apr 16, 2019·15 cites·18 claims
- 0895US9947862B2Magnetoresistive memory deviceTOSHIBA MEMORY CORP·Filed 2016·Granted Apr 17, 2018·16 cites·21 claims
- 0994US11316095B2Magnetic device which improves write error rate while maintaining retention propertiesKIOXIA CORP·Filed 2020·Granted Apr 26, 2022·3 cites·20 claims
- 1094US10510950B2Magnetoresistive memory deviceTOSHIBA MEMORY CORP·Filed 2019·Granted Dec 17, 2019·12 cites·7 claims
- 1194US10388343B2Magnetoresistive element and magnetic memoryTOSHIBA MEMORY CORP·Filed 2018·Granted Aug 20, 2019·18 cites·13 claims
- 1292US7067206B2Perpendicular magnetic recording medium and a method of manufacturing the sameFUJI ELECTRIC CO LTD·Filed 2002·Granted Jun 27, 2006·34 cites·18 claims
- 1391US11201189B2Semiconductor device having rare earth oxide layer and method of manufacturing the sameTOSHIBA MEMORY CORP·Filed 2018·Granted Dec 14, 2021·4 cites·9 claims
- 1489US7183011B2Magnetic recording mediumFUJI ELECTRIC CO LTD·Filed 2003·Granted Feb 27, 2007·24 cites·18 claims
- 1588US11217288B2Magnetic device and memory deviceTOSHIBA MEMORY CORP·Filed 2019·Granted Jan 4, 2022·3 cites·18 claims
- 1688US6667116B1Magnetic recording media, the manufacturing method for the same, and magnetic recording deviceFUJI ELECTRIC CO LTD·Filed 2000·Granted Dec 23, 2003·27 cites·11 claims
- 1787US6884520B2Perpendicular magnetic recording medium and method of manufacturing the same and product thereofFUJI ELECTRIC CO LD·Filed 2002·Granted Apr 26, 2005·32 cites·28 claims
- 1885US6767651B2Magnetic recording medium, method for manufacturing a magnetic recording medium and magnetic recording deviceFUJI ELECTRIC CO LTD·Filed 2002·Granted Jul 27, 2004·19 cites·10 claims
- 1985US6716542B2Sputtering target for production of a magnetic recording mediumFUJI ELECTRIC CO LTD·Filed 2001·Granted Apr 6, 2004·25 cites·3 claims
- 2085US6673475B2Magnetic recording medium and manufacturing method thereforeFUJI ELECTRIC CO LTD·Filed 2001·Granted Jan 6, 2004·19 cites·19 claims
- 2185US6589669B2Magnetic recording medium and manufacturing method for the sameFUJI ELECTRIC CO LTD·Filed 2001·Granted Jul 8, 2003·19 cites·13 claims
- 2284US11563168B2Magnetic memory device that suppresses diffusion of elementsKIOXIA CORP·Filed 2020·Granted Jan 24, 2023·1 cites·16 claims
- 2383US10490732B2Magnetic memory device with sidewall layer containing boron and manufacturing method thereofTOSHIBA MEMORY CORP·Filed 2016·Granted Nov 26, 2019·6 cites·5 claims
- 2483US6696172B2Recording medium and method for manufacturing the sameFUJI ELECTRIC CO LTD·Filed 2001·Granted Feb 24, 2004·17 cites·5 claims
- 2582US12048252B2Magnetoresistive memory deviceKIOXIA CORP·Filed 2022·Granted Jul 23, 2024·0 cites·2 claims
- 2680US7147942B2Perpendicular magnetic recording medium and method of manufacturing the same and product thereofFUJI ELECTRIC CO LTD·Filed 2002·Granted Dec 12, 2006·11 cites·12 claims
- 2779US9418780B2Magnetic composite materialSAMSUNG ELECTRONICS CO LTD·Filed 2013·Granted Aug 16, 2016·3 cites·18 claims
- 2879USRE41282EPerpendicular magnetic recording medium and a method of manufacturing the sameFUJI ELEC DEVICE TECH CO LTD·Filed 2007·Granted Apr 27, 2010·3 cites·20 claims
- 2978US6794028B2Perpendicular magnetic recording medium and a method of manufacturing the sameFUJI ELECTRIC CO LTD·Filed 2002·Granted Sep 21, 2004·39 cites·8 claims
- 3077US11495740B2Magnetoresistive memory deviceKIOXIA CORP·Filed 2020·Granted Nov 8, 2022·1 cites·7 claims
- 3177US6716543B2Magnetic recording medium and method for producing sameFUJI ELECTRIC CO LTD·Filed 2001·Granted Apr 6, 2004·19 cites·14 claims
- 3275US8034470B2Perpendicular magnetic recording medium and method of manufacturing the mediumFUJI ELECTRIC CO LTD·Filed 2008·Granted Oct 11, 2011·6 cites·17 claims
- 3374US8323808B2Perpendicular magnetic recording mediumKITAKAMI OSAMU·Filed 2005·Granted Dec 4, 2012·3 cites·7 claims
- 3471US2025275481A1Magnetoresistance memory deviceKIOXIA CORP·Filed 2025·Application pending·0 cites
- 3570US11832528B2Magnetic memory deviceKIOXIA CORP·Filed 2022·Granted Nov 28, 2023·0 cites·17 claims
- 3669US7247395B2Magnetic recording medium exhibiting low noise and high coercive forceFUJI ELEC DEVICE TECH CO LTD·Filed 2002·Granted Jul 24, 2007·7 cites·14 claims
- 3768US12329038B2Magnetoresistance memory deviceKIOXIA CORP·Filed 2021·Granted Jun 10, 2025·0 cites·4 claims
- 3868US7183013B2Magnetic recording medium and manufacturing method thereofFUJI ELEC DEVICE TECH CO LTD·Filed 2004·Granted Feb 27, 2007·6 cites·28 claims
- 3968US2025098545A1Magnetic memory deviceKIOXIA CORP·Filed 2024·Application pending·0 cites
- 4067US2025295041A1Magnetic memory deviceKIOXIA CORP·Filed 2024·Application pending·0 cites
- 4166US8691402B2Perpendicular magnetic recording mediumFUJI ELECTRIC CO LTD·Filed 2012·Granted Apr 8, 2014·1 cites·15 claims
- 4264US12514129B2Magnetic memory deviceKIOXIA CORP·Filed 2024·Granted Dec 30, 2025·0 cites·16 claims
- 4361US12426273B2Magnetoresistance memory device and method for manufacturing magnetoresistance memory deviceKIOXIA CORP·Filed 2023·Granted Sep 23, 2025·0 cites·15 claims
- 4461US6994924B2Magnetic recording medium and manufacture method thereforFUJI ELECTRIC CO LTD·Filed 2002·Granted Feb 7, 2006·4 cites·26 claims
- 4561US2024268238A1Magnetic memory deviceKIOXIA CORP·Filed 2024·Application pending·0 cites
- 4660US12089505B2Magnetic memory deviceKIOXIA CORP·Filed 2021·Granted Sep 10, 2024·0 cites·15 claims
- 4759US8252152B2Perpendicular magnetic recording medium and method of manufacturing the same and product thereofUWAZUMI HIROYUKI·Filed 2008·Granted Aug 28, 2012·0 cites·5 claims
- 4857US2007082231A1Magnetic recording mediumFUJI ELECTRIC CO LTD·Filed 2006·Application pending·0 cites
- 4957US2007059561A1Perpendicular magnetic recording medium and method of manufacturing the same and product thereofFUJI ELECTRIC HOLDINGS·Filed 2006·Application pending·0 cites
- 5055US12356866B2Magnetic memory deviceKIOXIA CORP·Filed 2021·Granted Jul 8, 2025·0 cites·11 claims
Showing the top 50 of 77 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Tadaaki Oikawa 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 →