Inventor
KOIZUMI GAKU
JP24 patents
⚠️ This page may combine multiple inventors who share the name “KOIZUMI GAKU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOSHIBA KK
21 patentsUS10276193B2Apr 30, 2019
Magnetic head having magnetic pole and shield, and magnetic recording and reproducing device
TOSHIBA KK83 citations97
US10546600B1Jan 28, 2020
Magnetic head with high-frequency oscillating element and disk device comprising the same
TOSHIBA KK15 citations85
US10529365B2Jan 7, 2020
Method for correcting position offset of the heads on two dimensional magnetic recording device
TOSHIBA KK7 citations84
US9792933B2Oct 17, 2017
Magnetic head, disk drive with the same and method of manufacturing magnetic head
TOSHIBA KK16 citations84
US8896947B2Nov 25, 2014
Disk storage apparatus and method for determining malfunction of high-frequency oscillating element
TOSHIBA KK10 citations84
US8810954B1Aug 19, 2014
Disk storage apparatus, write control apparatus and write control method
TOSHIBA KK14 citations84
US10014009B1Jul 3, 2018
Magnetic disk drive and recording head control method
TOSHIBA KK9 citations83
US10657990B2May 19, 2020
Magnetic head and disk device having gap layers with different magnetic relative permeabilities
TOSHIBA KK2 citations73
US10403308B2Sep 3, 2019
Magnetic disk device which controls a recording operation and a non-recording operation of a recording head and a recording head control method of the magnetic disk device
TOSHIBA KK4 citations73
US9305584B2Apr 5, 2016
Determining oscillation characteristic for high-frequency assisted magnetic recording device
TOSHIBA KK5 citations73
US10867624B1Dec 15, 2020
Magnetic head and disk device with heat actuators
TOSHIBA KK4 citations72
US10504543B1Dec 10, 2019
Magnetic disk device
TOSHIBA KK5 citations72
US12027187B2Jul 2, 2024
Magnetic disk device
TOSHIBA KK0 citations62
US11626132B2Apr 11, 2023
Magnetic disk device
TOSHIBA KK0 citations62
US10741201B2Aug 11, 2020
Magnetic recording device capable of stabilizing oscillations of high frequency assisted element
TOSHIBA KK1 citations62
US10360931B2Jul 23, 2019
Magnetic recording apparatus
TOSHIBA KK0 citations52
US12586603B2Mar 24, 2026
Disk device
TOSHIBA KK0 citations51
US11817135B2Nov 14, 2023
Magnetic head and magnetic recording/reproducing device
TOSHIBA KK0 citations51
US11404084B2Aug 2, 2022
Magnetic disk device
TOSHIBA KK0 citations51
US10825473B2Nov 3, 2020
Magnetic disk device
TOSHIBA KK0 citations51
US11176965B2Nov 16, 2021
Magnetic disk device
TOSHIBA KK0 citations49