Inventor
XU JUNGUO
JP31 patents
⚠️ This page may combine multiple inventors who share the name “XU JUNGUO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI GLOBAL STORAGE TECH
10 patentsUS6963464B2Nov 8, 2005
Magnetic head heating element in a disk drive
HITACHI GLOBAL STORAGE TECH67 citations98
US7271975B2Sep 18, 2007
Controlling head flying height in a data storage device
HITACHI GLOBAL STORAGE TECH32 citations92
US7088543B2Aug 8, 2006
Suspension having magnetic head assembly mounted thereon and magnetic recording disk drive using the suspension
HITACHI GLOBAL STORAGE TECH26 citations92
US7209309B2Apr 24, 2007
Magnetic disk apparatus and method of controlling the same
HITACHI GLOBAL STORAGE TECH12 citations83
US7474504B2Jan 6, 2009
Magnetic head heating element in a disk drive
HITACHI GLOBAL STORAGE TECH7 citations74
US7375913B2May 20, 2008
Suspension having magnetic head assembly mounted thereon and magnetic recording disk drive using the suspension
HITACHI GLOBAL STORAGE TECH6 citations74
US6920009B2Jul 19, 2005
Magnetic disk apparatus and position control method for magnetic head slider thereof
HITACHI GLOBAL STORAGE TECH9 citations73
US7042678B2May 9, 2006
Magnetic head slider and magnetic disc unit
HITACHI GLOBAL STORAGE TECH5 citations63
US7738215B2Jun 15, 2010
Magnetic head slider having spherical of ellipsoidal projection formed thereon
HITACHI GLOBAL STORAGE TECH0 citations52
US7151644B2Dec 19, 2006
Magnetic disk apparatus and position control method for magnetic head slider thereof
HITACHI GLOBAL STORAGE TECH1 citations51
HGST Netherlands BV
7 patentsUS9355668B2May 31, 2016
Hard disk drive with contact detection using a spin torque oscillator
HGST Netherlands BV16 citations84
US8885274B1Nov 11, 2014
Implementing surface analysis test (SAT) function for microwave-assisted magnetic recording (MAMR) HDD with embedded contact sensor (ECS) and spin torque oscillator (STO) signals
HGST Netherlands BV8 citations84
US8797693B1Aug 5, 2014
Implementing enhanced ESD prevention for hard disk drives using spin-torque oscillator (STO)
HGST Netherlands BV13 citations84
US9311945B2Apr 12, 2016
Magnetic head for microwave assisted magnetic recording
HGST Netherlands BV3 citations73
US9007724B1Apr 14, 2015
Head structure with electric damage protection for a microwave-assisted hard disk drive
HGST Netherlands BV3 citations63
US9053725B1Jun 9, 2015
High-speed recording disk defect detection
HGST Netherlands BV3 citations58
US9159348B2Oct 13, 2015
Systems and methods for clearance monitoring in storage media
HGST Netherlands BV1 citations52
HITACHI LTD
3 patentsUS6798605B2Sep 28, 2004
Magnetic disk apparatus and method of controlling the same
HITACHI LTD46 citations95
US6690543B2Feb 10, 2004
Magnetic disk drive with air bearing surface pad on movable portion and method of controlling
HITACHI LTD37 citations92
US6633455B2Oct 14, 2003
Slider capable of reducing distance between head element and recording medium, and recording apparatus incorporating same
HITACHI LTD9 citations74