P

Inventor

FUKUHISA RYOJI

JP7 patents
⚠️ This page may combine multiple inventors who share the name “FUKUHISA RYOJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

IBM

3 patents
US6567886B1May 20, 2003

Disk drive apparatus and control method thereof

IBM21 citations92
US6516401B2Feb 4, 2003

Data reading method and data reading apparatus

IBM8 citations71
US6249854B1Jun 19, 2001

Data reading method and apparatus for a disk drive storage device

IBM11 citations71

HITACHI GLOBAL STORAGE TECH

2 patents
US7085087B2Aug 1, 2006

Data storage apparatus and method for managing buffer memory

HITACHI GLOBAL STORAGE TECH17 citations83
US7197593B2Mar 27, 2007

Bad-sector search method, data recording device, and program

HITACHI GLOBAL STORAGE TECH7 citations71

HGST Netherlands BV

1 patent
US9454990B1Sep 27, 2016

System and method of conducting in-place write operations in a shingled magnetic recording (SMR) drive

HGST Netherlands BV8 citations81

WESTERN DIGITAL TECH INC

1 patent
US12046257B1Jul 23, 2024

Reducing peak power consumption in a multi-actuator hard disk drive

WESTERN DIGITAL TECH INC0 citations47