Inventor
KITAWAKI KOTARO
JP24 patents
⚠️ This page may combine multiple inventors who share the name “KITAWAKI KOTARO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
UACJ CORP
21 patentsUS9613648B2Apr 4, 2017
Aluminum alloy plate for magnetic disc substrate, method for manufacturing same, and method for manufacturing magnetic disc
UACJ CORP13 citations76
US11211088B2Dec 28, 2021
Magnetic disc, aluminum alloy substrate for magnetic disc, and production method for aluminum alloy substrate
UACJ CORP2 citations72
US10767247B2Sep 8, 2020
Aluminum alloy magnetic disk substrate and method for producing same
UACJ CORP6 citations72
US10755738B2Aug 25, 2020
Aluminum alloy substrate for magnetic discs and manufacturing method therefor, as well as magnetic disc using said aluminum alloy substrate for magnetic discs
UACJ CORP2 citations72
US11404082B2Aug 2, 2022
Aluminium alloy substrate for magnetic disk, method for fabricating the same, and magnetic disk composed of aluminium alloy substrate for magnetic disk
UACJ CORP2 citations70
US11935559B2Mar 19, 2024
Magnetic disk device
UACJ CORP0 citations62
US11482251B2Oct 25, 2022
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
UACJ CORP0 citations62
US11423937B2Aug 23, 2022
Aluminum alloy substrate for magnetic disk, method for producing the same, and magnetic disk using aluminum alloy substrate for magnetic disk
UACJ CORP0 citations62
US11037594B2Jun 15, 2021
Aluminum-alloy substrate for magnetic disk, method for manufacturing same and magnetic disk employing said aluminum-alloy substrate for magnetic disk
UACJ CORP0 citations62
US12555602B2Feb 17, 2026
Magnetic disk substrate and magnetic disk using magnetic disk substrate
UACJ CORP0 citations61
US12243570B2Mar 4, 2025
Aluminum alloy substrate for magnetic disc and magnetic disc
UACJ CORP0 citations61
US12087342B2Sep 10, 2024
Aluminum alloy disc blank for magnetic disc and magnetic disc
UACJ CORP0 citations61
US12033665B2Jul 9, 2024
Thin substrate built-in hard disk drive and base plate member for thin substrate built-in hard disk drive
UACJ CORP0 citations61
US11721361B2Aug 8, 2023
Aluminum alloy substrate for magnetic disks, method for producing same, and magnetic disk using said aluminum alloy substrate for magnetic disks
UACJ CORP0 citations61
US11341995B2May 24, 2022
Aluminum alloy sheet for magnetic disk and production method therefor, and magnetic disk using said aluminum alloy sheet for magnetic disk
UACJ CORP0 citations61
US10408550B2Sep 10, 2019
Heat exchanger, and fin material for said heat exchanger
UACJ CORP1 citations59
US11208710B2Dec 28, 2021
Aluminum alloy substrate for magnetic disks, method for producing same, and magnetic disk using this aluminum alloy substrate for magnetic disks
UACJ CORP0 citations58
US11361791B2Jun 14, 2022
Aluminum alloy sheet for magnetic disk and production method therefor, and magnetic disk using said aluminum alloy sheet for magnetic disk
UACJ CORP0 citations51
US11270730B2Mar 8, 2022
Magnetic disk substrate, method for manufacturing same and magnetic disk
UACJ CORP0 citations51
US12394440B2Aug 19, 2025
Magnetic disk device and method for manufacturing magnetic disk device
UACJ CORP0 citations50
US12205616B2Jan 21, 2025
Impact resistant magnetic disk device and method for manufacturing impact resistant magnetic disk device
UACJ CORP0 citations50
FURUKAWA ELECTRIC CO LTD
2 patentsUS12573424B2Mar 10, 2026
Magnetic disk and substrate for magnetic disk
FURUKAWA ELECTRIC CO LTD0 citations51
US11335367B2May 17, 2022
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
FURUKAWA ELECTRIC CO LTD0 citations47