Inventor · disambiguated record
Wataru Kumagai
Also filed as: KUMAGAI WATARU
9 granted patents·8 pending applications·18 citations·filing 2013–2023
78Inventor score
Top patents by PatentIndex Score
17 records- 0190US9306845B2Communication system and network relay deviceHITACHI METALS LTD·Filed 2013·Granted Apr 5, 2016·17 cites·4 claims
- 0264US2024018633A1Aluminum alloy disc blank for magnetic disc and magnetic discUACJ CORP·Filed 2023·Application pending·0 cites
- 0363US12033665B2Thin substrate built-in hard disk drive and base plate member for thin substrate built-in hard disk driveUACJ CORP·Filed 2023·Granted Jul 9, 2024·0 cites·4 claims
- 0461US12087342B2Aluminum alloy disc blank for magnetic disc and magnetic discUACJ CORP·Filed 2023·Granted Sep 10, 2024·0 cites·8 claims
- 0560US12243570B2Aluminum alloy substrate for magnetic disc and magnetic discUACJ CORP·Filed 2023·Granted Mar 4, 2025·0 cites·7 claims
- 0657US9559984B2Communication system and network relay deviceHITACHI METALS LTD·Filed 2013·Granted Jan 31, 2017·1 cites·7 claims
- 0755US2023111915A1Aluminum alloy substrate for magnetic disks, and magnetic disk using said aluminum alloy substrate for magnetic disksUACJ CORP·Filed 2021·Application pending·0 cites
- 0855US2023120845A1Aluminum alloy substrate for magnetic disk, and magnetic disk using sameUACJ CORP·Filed 2021·Application pending·0 cites
- 0949US2019066724A1Substrate for a magnetic diskUACJ CORP·Filed 2018·Application pending·0 cites
- 1047US11721361B2Aluminum alloy substrate for magnetic disks, method for producing same, and magnetic disk using said aluminum alloy substrate for magnetic disksUACJ CORP·Filed 2018·Granted Aug 8, 2023·0 cites·14 claims
- 1145US11423937B2Aluminum alloy substrate for magnetic disk, method for producing the same, and magnetic disk using aluminum alloy substrate for magnetic diskUACJ CORP·Filed 2018·Granted Aug 23, 2022·0 cites·14 claims
- 1241US2017327930A1Aluminum alloy substrate for magnetic diskUACJ CORP·Filed 2015·Application pending·0 cites
- 1341US2015049761A1Network Relay System and Switching DeviceHITACHI METALS LTD·Filed 2014·Application pending·0 cites
- 1438US2014071810A1Communication system and processing method thereforHITACHI METALS LTD·Filed 2013·Application pending·0 cites
- 1536US11335367B2Aluminum alloy substrate for magnetic disk, disk drive device, method for manufacturing aluminum alloy substrate for magnetic disk, and method for measuring aluminum alloy substrate for magnetic diskFURUKAWA ELECTRIC CO LTD·Filed 2020·Granted May 17, 2022·0 cites·8 claims
- 1631US9385971B2Communication system and network relay deviceHITACHI METALS LTD·Filed 2013·Granted Jul 5, 2016·0 cites·5 claims
- 1730US2016042754A1Metal member for magnetic storage medium and magnetic storage mediumFURUKAWA ELECTRIC CO LTD·Filed 2015·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →