Magnetic disk and substrate for magnetic disk
US-12573424-B2 · Mar 10, 2026 · US
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Kitawaki Kotaro patents
Kitawaki Kotaro is listed as an inventor on 61 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Kitawaki Kotaro |
| Total patents | 61 |
| First publication | Apr 28, 2016 |
| Latest publication | Mar 10, 2026 |
Notable patents
Publications ranked by popularity score, then publication date.
Magnetic disk substrate and magnetic disk using magnetic disk substrate
US-12555602-B2 · Feb 17, 2026 · US
Magnetic disk device and method for manufacturing magnetic disk device
US-12394440-B2 · Aug 19, 2025 · US
Magnetic disk and substrate for magnetic disk
US-2025218460-A1 · Jul 3, 2025 · US
Aluminum alloy substrate for magnetic disc and magnetic disc
US-12243570-B2 · Mar 4, 2025 · US
Impact resistant magnetic disk device and method for manufacturing impact resistant magnetic disk device
US-12205616-B2 · Jan 21, 2025 · US
Method for producing aluminum alloy raw material, method for producing aluminum alloy ingot, method for producing aluminum alloy plate, method for producing aluminum alloy substrate for plating, method for producing aluminum alloy substrate for magnetic disk, method for producing magnetic disk, and magnetic disk
US-2024417837-A1 · Dec 19, 2024 · US
Magnetic disk substrate and magnetic disk using the same
US-2024355357-A1 · Oct 24, 2024 · US
Aluminum alloy disc blank for magnetic disc and magnetic disc
US-12087342-B2 · Sep 10, 2024 · US
Magnetic disk device and method for manufacturing magnetic disk device
US-2024233766-A9 · Jul 11, 2024 · US
Recent patents
Latest publications not already listed above.
Thin substrate built-in hard disk drive and base plate member for thin substrate built-in hard disk drive
US-12033665-B2 · Jul 9, 2024 · US
Magnetic disk device and method for manufacturing magnetic disk device
US-2024170017-A1 · May 23, 2024 · US
Magnetic disk device and method for manufacturing magnetic disk device
US-2024135971-A1 · Apr 25, 2024 · US
Thin substrate built-in hard disk drive and base plate member for thin substrate built-in hard disk drive
US-2024119967-A1 · Apr 11, 2024 · US
Magnetic disk device
US-11935559-B2 · Mar 19, 2024 · US
Aluminum alloy disc blank for magnetic disc and magnetic disc
US-2024018633-A1 · Jan 18, 2024 · US
Aluminum alloy substrate for magnetic disc and magnetic disc
US-2024021213-A1 · Jan 18, 2024 · US
Magnetic disk device
US-2024005958-A1 · Jan 4, 2024 · US
Aluminum alloy disc blank for magnetic disc and magnetic disc
US-2023335161-A1 · Oct 19, 2023 · US
Aluminum alloy substrate for magnetic disks, method for producing same, and magnetic disk using said aluminum alloy substrate for magnetic disks
US-11721361-B2 · Aug 8, 2023 · US
Magnetic disk substrate and magnetic disk using magnetic disk substrate
US-2023238027-A1 · Jul 27, 2023 · US
Aluminum alloy substrate for magnetic disk, and magnetic disk using same
US-2023120845-A1 · Apr 20, 2023 · US
Aluminum alloy substrate for magnetic disks, and magnetic disk using said aluminum alloy substrate for magnetic disks
US-2023111915-A1 · Apr 13, 2023 · US
Aluminum alloy substrate for magnetic disk and method for manufacturing same, aluminum alloy base disk for magnetic disk and method for manufacturing same, and magnetic disk and method for manufacturing the same
US-11482251-B2 · Oct 25, 2022 · US
Aluminum alloy substrate for magnetic disk, method for producing the same, and magnetic disk using aluminum alloy substrate for magnetic disk
US-11423937-B2 · Aug 23, 2022 · US
Aluminium alloy substrate for magnetic disk, method for fabricating the same, and magnetic disk composed of aluminium alloy substrate for magnetic disk
US-11404082-B2 · Aug 2, 2022 · US
Aluminum alloy sheet for magnetic disk and production method therefor, and magnetic disk using said aluminum alloy sheet for magnetic disk
US-11361791-B2 · Jun 14, 2022 · US
Aluminum-alloy material
US-2022170142-A1 · Jun 2, 2022 · US
Aluminum alloy sheet for magnetic disk and production method therefor, and magnetic disk using said aluminum alloy sheet for magnetic disk
US-11341995-B2 · May 24, 2022 · US
Aluminum 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 disk
US-11335367-B2 · May 17, 2022 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Uacj Corp | 61 |
| Furukawa Electric Co Ltd | 55 |
| Denso Corp | 1 |
| Furkawa Electric Co Ltd | 1 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| G11B5/73919 | 43 |
| C22C21/00 | 38 |
| C22F1/00 | 35 |
| C22F1/04 | 31 |
| G11B5/8404 | 30 |