Inventor

Jack M. Chue

Inventor

Los Altos, CA, US

Overview

2003–2015

Patent span

Physics

Primary field (CPC G)

Patents· 29 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G11Bprimary

G11BInformation storage based on relative movement between record carrier and transducer88%

Y10TTechnical subjects covered by former us classification6%

H03MCoding3%

H05KPrinted circuits3%

PatentTitleYear

9,025,269'Disk drive compensating for cycle slip of disk locked clock when reading mini-wedge'2015 8,482,873'Disk drive employing pulse width modulation of head control signal'2013 7,916,415'Disk drive decoding binary sequence from phases of servo bursts'2011 7,869,160'Perpendicular recording head with shaped pole surfaces for higher linear data densities'2011 7,839,595'Feed forward compensation for fly height control in a disk drive'2010 7,710,676'Disk drive comprising gray code implemented with servo bursts'2010 7,518,819'Disk drive rewriting servo sectors by writing and servoing off of temporary servo data written in data sectors'2009 7,502,197'Disk drive demodulating a time-based servo pattern'2009 7,433,143'Adjusting track density by changing slope of spiral tracks used to servo write a disk drive'2008 7,330,327'Servo writing a disk drive by writing discontinuous spiral tracks to prevent overheating'2008 7,184,230'System and method for processing track identifier errors to mitigate head instability in data storage devices'2007 7,180,703'Disk drive comprising a spindle motor employing anionic/cationic lubricant to reduce disk surface potential'2007 7,136,242'Servo writing substantially linear servo wedges to reduce overwrite effect in perpendicular magnetic recording'2006 7,099,095'Track identification codewords having multiple bit error correction capability and generalized gray code property'2006 7,099,117'Head stack assembly including a trace suspension assembly backing layer and a ground trace for grounding a slider'2006 7,068,461'Servo writing a disk drive by overwriting a harmonic frequency fill pattern in the servo burst area'2006 7,050,249'System and method for processing track identification data in a disk drive'2006 7,035,026'Method of manufacturing and disk drive produced by measuring the read and write widths and varying the track pitch in the servo-writer'2006 7,027,256'Disk drive having servo sectors that store repeatable runout correction values and related error correction code data'2006 7,027,264'Slider with a slider ground pad electrically connected to write head poles and read head shields'2006 7,016,134'Using an external spiral servo writer to write spiral tracks to a disk to facilitate writing product servo sectors to the disk'2006 6,987,636'Adjusting track density over disk radius by changing slope of spiral tracks used to servo write a disk drive'2006 6,972,922'Disk drive having internal data structures for efficiently storing repeatable runout cancellation information'2005 6,943,972'Selecting a track density for each disk surface of a disk drive based on head characteristic'2005 6,885,514'Method of manufacturing and disk drive produced by measuring the read and write widths and varying the track pitch in the servo-writer'2005 6,801,402'ESD-protected head gimbal assembly for use in a disk drive'2004 6,693,760'Preamplifier circuit configurable to allow simultaneous read and write operations for self-servo writing a disk drive'2004 6,657,801'Disk drive with improved characterization segment pattern and method of recording the same'2003 6,600,620'Self-servo writing a disk drive by propagating interleaved sets of timing clocks and servo bursts during alternate time intervals'2003

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2003–2015Patents assigned to WESTERN DIGITAL TECH INC (28)· patent assignee history

2003–2015Based in Los Altos, CA, US· patent location history

2011Patents assigned to WESTERN DIGITAL FREMONT LLC (1)· patent assignee history

2013Patents assigned to CHUE JACK M (1)· patent assignee history

2013Patents assigned to HUBER WILLIAM D (1)· patent assignee history

2013Patents assigned to HUGUNIN TOMAS D (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
WESTERN DIGITAL TECH INC	28	2003–2015
CHUE JACK Mself	1	2013
HUBER WILLIAM D	1	2013
HUGUNIN TOMAS D	1	2013
WESTERN DIGITAL FREMONT LLC	1	2011

Locations

Location	Patents	Span
Los Altos, California, US	29	2003–2015