LexDanaLexDanabeta
Inventor

Petrus Antonius Van Der Heijden

Inventor
Cupertino, CA, US

Overview

47→
Patents
2003–2020
Patent span
Physics
Primary field (CPC G)

Patents· 47 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 transducer64%
B82YSpecific uses or applications of nanostructures12%
Y10TTechnical subjects covered by former us classification9%
G01RMeasuring electric variables8%
H01FMagnets1%
H01JElectric discharge tubes or discharge lamps1%
H01LSemiconductor devices1%
H10NElectric solid-state devices not otherwise provided for1%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests1%
PatentTitleYear
10,872,626MAMR stack shape optimization for magnetic recording202010,872,627Reversed mode spin torque oscillator with shaped field generation layer202010,861,485Write heads configured to redirect current202010,839,832MAMR recording head with high damping trailing shield seed layer202010,839,844Current-assisted magnetic recording write head with wide conductive element in the write gap202010,777,219Write heads configured to redirect current202010,762,917Reversed mode spin torque oscillator with shaped field generation layer202010,714,128Magnetic write head with dual return pole202010,706,877Spin torque layer in side gap for improved field and cross track field gradient202010,643,642Apparatus and method for writing to magnetic media using an AC bias current to enhance the write field202010,468,058Magnetic write head with a tapered return pole201910,388,305Apparatus and method for writing to magnetic media using an AC bias current to enhance the write field20199,953,675Enhanced write pole and return pole for improved areal density20189,947,347Magnetic sensor using inverse spin hall effect20189,805,753'Enhanced write pole and return pole for improved areal density'20179,429,633'Magnetic sensor utilizing rashba effect in a two-dimensional conductor'20169,299,370'MIMO read head with soft bias and split shield'20169,153,258'Scissor magnetic read sensor with novel multi-layer bias structure for uniform free layer biasing'20159,135,942'Heat assisted magnetic recording head having wider heat sink and pole'20159,099,122'Scissor sensor with back edge bias structure and novel dielectric layer'20159,099,119'Magnetic read sensor using spin hall effect'20159,076,468'Scissor magnetic read sensor with shape enhanced soft magnetic side shield for improved stability'20158,902,534'Implementing track following using data characteristics for positional information'20148,797,685'Perpendicular write head having a stepped flare structure and method of manufacture thereof'20148,749,918'Magnetic recording system using perpendicular exchange spring media and ring heads'20148,749,926'Scissor magnetic read head with wrap-around magnetic shield'20148,638,527'Signaling method and apparatus for write assist of high coercivity media using integrated half coil'20148,634,162'Perpendicular write head having a stepped flare structure and method of manufacture thereof'20148,587,900'Radiator-cooled nanowire-based write assist'20138,514,518'Flat E-yoke for cusp write head'20138,411,390'Integrated half coil structure for write assist of high coercivity media'20138,179,635'Single pole tip write head design for perpendicular recording media having reduced dependence on soft underlayers'20128,035,922'Write head with integrated coil and shield structure'20117,894,159'Perpendicular write head with independent trailing shield designs'20117,467,461'Additive gap process to define trailing and side shield gap for a perpendicular write head'20087,212,367'Ampere wire write head with confined magnetic fields'20077,149,055'Inductive write head driven only by an ampere wire'20067,099,121'Perpendicular magnetic recording head having a reduced field under the return pole and minimal eddy current losses'20066,985,339'Disc drive having electromagnetic biased shieldless CPP reader'20066,813,115'Perpendicular magnetic recording head with improved write field gradient'20046,807,032'Magnetic read head wherein the shields are used as electrical leads and have a minimized anisotropic magneto-resistance effect'20046,798,623'Biased CPP sensor using spin-momentum transfer'20046,785,092'White head for high anisotropy media'20046,728,065'Single pole magnetic recording head for perpendicular magnetic recording'20046,724,583'Adjustable permanent magnet bias'20046,654,209'Low resistance lead structure for a low resistance magnetic read head'20036,519,119'Structure for current perrpendicular to plane giant magnetoresistive read heads'2003

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2003–2007Patents assigned to SEAGATE TECHNOLOGY LLC (12)· patent assignee history
2003–2007Based in Cranberry Township, PA, US· patent location history
2003–2004Based in Pittsburgh, PA, US· patent location history
2008–2014Based in San Jose, CA, US· patent location history
2011–2014Patents assigned to HITACHI GLOBAL STORAGE TECH NL (5)· patent assignee history
2012–2014Patents assigned to VAN DER HEIJDEN PETRUS ANTONIUS (7)· patent assignee history
2013–2017Patents assigned to HGST Netherlands BV (15)· patent assignee history
2014–2020Based in Cupertino, CA, US· patent location history
2017–2020Patents assigned to WESTERN DIGITAL TECH INC (15)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HGST Netherlands BV152013–2017
WESTERN DIGITAL TECH INC152017–2020
SEAGATE TECHNOLOGY LLC122003–2007
VAN DER HEIJDEN PETRUS ANTONIUSself72012–2014
HITACHI GLOBAL STORAGE TECH NL52011–2014
Locations
LocationPatentsSpan
Cupertino, California, US242014–2020
San Jose, California, US112008–2014
Cranberry Township, Pennsylvania, US102003–2007
Pittsburgh, Pennsylvania, US22003–2004