P

Inventor

ISOKAWA HIROSHI

JP41 patents
⚠️ This page may combine multiple inventors who share the name “ISOKAWA HIROSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

TOSHIBA KK

17 patents
US11437069B2Sep 6, 2022

Magnetic recording and reproducing device

TOSHIBA KK5 citations73
US11276421B2Mar 15, 2022

Energy-assisted magnetic recording device

TOSHIBA KK2 citations73
US10490223B2Nov 26, 2019

Magnetic disk device and refresh processing method

TOSHIBA KK2 citations73
US9093085B1Jul 28, 2015

Laser controller for heat-assisted magnetic recording device

TOSHIBA KK2 citations63
US12249354B2Mar 11, 2025

Magnetic disk device with recording current arrangement

TOSHIBA KK0 citations62
US11984143B2May 14, 2024

Magnetic disk device with magnetic disk overwrite characteristics arrangement

TOSHIBA KK0 citations62
US11651782B2May 16, 2023

Magnetic disk device with magnetic head size arrangement

TOSHIBA KK0 citations62
US11646051B2May 9, 2023

Magnetic disk device and refresh threshold setting method

TOSHIBA KK1 citations62
US11354042B2Jun 7, 2022

Magnetic disk device and method of setting data format

TOSHIBA KK0 citations62
US10997999B2May 4, 2021

Information processing apparatus with switching circuit on power supply for disk device

TOSHIBA KK0 citations62
US10984820B2Apr 20, 2021

Magnetic disk device having multiple writers with writing current of different frequencies

TOSHIBA KK1 citations62
US10650858B2May 12, 2020

Switching circuit on power supply for magnetic disk recording device

TOSHIBA KK1 citations62
US12002495B2Jun 4, 2024

Magnetic disk device and method of adjusting preheat time

TOSHIBA KK0 citations52
US10803887B2Oct 13, 2020

Magnetic disk drive and recording method for magnetic disk drive

TOSHIBA KK0 citations52
US8724435B1May 13, 2014

Magnetic disk having reflecting layer in recording layer, magnetic disk device, and thermally assisted magnetic recording method

TOSHIBA KK0 citations52
US9548071B2Jan 17, 2017

Storage apparatus, controller and control method

TOSHIBA KK0 citations42
US8995079B2Mar 31, 2015

Magnetic head, magnetic disk drive, and method of controlling magnetic head

TOSHIBA KK0 citations42

KONICA MINOLTA INC

10 patents

KONICA MINOLTA BUSINESS TECH

5 patents

FUJITSU LTD

3 patents

ISOKAWA HIROSHI

2 patents

IKAI TOSHIYUKI

1 patent

KONISHIROKU PHOTO IND

1 patent

YAMADA YUICHI

1 patent

KONICA MINOLTA HOLDINGS INC

1 patent