Inventor · disambiguated record
Masaru Terakawa
Also filed as: TERAKAWA MASARU · TERAKAWA MASARU JASPER
31 granted patents·8 pending applications·62 citations·filing 2006–2022
94Inventor score
Top patents by PatentIndex Score
39 records- 0195US11315594B2Magnetic recording medium having controlled dimensional variationSONY CORP·Filed 2020·Granted Apr 26, 2022·6 cites·20 claims
- 0294US10748570B2Magnetic recording mediumSONY CORP·Filed 2019·Granted Aug 18, 2020·13 cites·28 claims
- 0393US10839847B2Magnetic recording medium having a dimensional variationSONY CORP·Filed 2019·Granted Nov 17, 2020·12 cites·32 claims
- 0489US10923148B2Magnetic recording mediumSONY CORP·Filed 2019·Granted Feb 16, 2021·12 cites·29 claims
- 0588US11031033B2Magnetic recording medium and cartridgeSONY CORP·Filed 2019·Granted Jun 8, 2021·6 cites·23 claims
- 0686US10755841B2Magnetic powder, method for production thereof, and magnetic recording mediumSONY CORP·Filed 2015·Granted Aug 25, 2020·2 cites·9 claims
- 0784US11217277B2Magnetic recording medium having controlled coercive force ratioSONY CORP·Filed 2018·Granted Jan 4, 2022·1 cites·10 claims
- 0884US10204651B2Magnetic recording medium having cubic ferrite or e-phase iron oxide magnetic particlesSONY CORP·Filed 2015·Granted Feb 12, 2019·6 cites·9 claims
- 0971US11626128B2Magnetic recording mediumSONY GROUP CORP·Filed 2019·Granted Apr 11, 2023·2 cites·17 claims
- 1071US11355270B2Magnetic powder, method for production thereof, and magnetic recording mediumSONY CORP·Filed 2020·Granted Jun 7, 2022·0 cites·29 claims
- 1167US11749304B2Magnetic recording medium having controlled dimensional variationSONY CORP·Filed 2022·Granted Sep 5, 2023·0 cites·19 claims
- 1264US11551711B2Cobalt ferrite magnetic powder, method of producing the same, and magnetic recording mediumSONY GROUP CORP·Filed 2020·Granted Jan 10, 2023·0 cites·19 claims
- 1364US11145328B2Magnetic recording mediumSONY CORP·Filed 2020·Granted Oct 12, 2021·0 cites·19 claims
- 1463US11430477B2Magnetic recording mediumSONY CORP·Filed 2020·Granted Aug 30, 2022·0 cites·21 claims
- 1562US11031034B2Magnetic recording medium having a recording layer including epsilon-iron oxideSONY CORP·Filed 2017·Granted Jun 8, 2021·1 cites·12 claims
- 1659US10872633B2Magnetic recording medium, laminate, and flexible deviceSONY CORP·Filed 2017·Granted Dec 22, 2020·1 cites·20 claims
- 1757US11270729B2Magnetic recording mediumSONY CORP·Filed 2019·Granted Mar 8, 2022·0 cites·21 claims
- 1857US2015111066A1Magnetic recording mediumSONY CORP·Filed 2014·Application pending·0 cites
- 1956US11205455B2Magnetic recording mediumSONY CORP·Filed 2018·Granted Dec 21, 2021·0 cites·24 claims
- 2054US11521649B2Method of producing a magnetic powder and method of producing a magnetic recording mediumSONY CORP·Filed 2017·Granted Dec 6, 2022·0 cites·8 claims
- 2153US10839848B2Magnetic recording medium having cubic ferrite or e-phase iron oxide magnetic particlesSONY CORP·Filed 2018·Granted Nov 17, 2020·0 cites·17 claims
- 2253US10803897B2Magnetic recording mediumSONY CORP·Filed 2018·Granted Oct 13, 2020·0 cites·20 claims
- 2352US11170813B2Magnetic powder, method of producing the same, and magnetic recording mediumSONY CORP·Filed 2017·Granted Nov 9, 2021·0 cites·11 claims
- 2451US11514941B2Magnetic recording medium having controlled saturation flux densitySONY CORP·Filed 2019·Granted Nov 29, 2022·0 cites·12 claims
- 2551US2023075546A1Magnetic recording mediumSONY GROUP CORP·Filed 2021·Application pending·0 cites
- 2647US12293780B2Magnetic recording medium having a particular specific surface area, magnetic recording and reproducing apparatus, and magnetic recording medium cartridgeSONY GROUP CORP·Filed 2019·Granted May 6, 2025·0 cites·21 claims
- 2746US11830532B2Magnetic recording medium including magnetic layer having magnetic powder, magnetic recording/reproducing device, and magnetic recording medium cartridgeSONY GROUP CORP·Filed 2019·Granted Nov 28, 2023·0 cites·21 claims
- 2846US2020342901A1Magnetic recording mediumSONY CORP·Filed 2019·Application pending·0 cites
- 2946US2006228591A1Magnetic recording mediumTERAKAWA MASARU·Filed 2006·Application pending·0 cites
- 3045US11798588B2Magnetic recording mediumSONY CORP·Filed 2018·Granted Oct 24, 2023·0 cites·15 claims
- 3145US2006172156A1Magnetic recording medium and process for producing sameMAESHIMA KATSUNORI·Filed 2006·Application pending·0 cites
- 3244US11574651B2Magnetic recording medium having -iron oxide-containing particlesSONY CORP·Filed 2017·Granted Feb 7, 2023·0 cites·9 claims
- 3343US11355145B2Magnetic recording mediumSONY CORP·Filed 2016·Granted Jun 7, 2022·0 cites·8 claims
- 3442US12087340B2Magnetic recording mediumSONY GROUP CORP·Filed 2020·Granted Sep 10, 2024·0 cites·8 claims
- 3542US11830533B2Method of producing magnetic powder and method of producing magnetic recording mediumSONY CORP·Filed 2019·Granted Nov 28, 2023·0 cites·16 claims
- 3639US12394436B2Magnetic recording mediumSONY CORP·Filed 2016·Granted Aug 19, 2025·0 cites·22 claims
- 3735US2020321025A1Magnetic recording medium, laminate, and flexible deviceSONY CORP·Filed 2017·Application pending·0 cites
- 3833US2023119551A1Magnetic recording mediumSONY GROUP CORP·Filed 2020·Application pending·0 cites
- 3933US2022139423A1Magnetic recording mediumSONY GROUP CORP·Filed 2020·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →