PH

Petrus Antonius Van Der Heijden

WT Western Digital Technologies: 35 patents #46 of 3,180Top 2%
HB Hgst Netherlands, B.V.: 14 patents #42 of 972Top 5%
ST Seagate Technology: 12 patents #462 of 4,626Top 10%
HG HGST: 6 patents #305 of 1,677Top 20%
📍 Cupertino, CA: #174 of 6,989 inventorsTop 3%
🗺 California: #4,767 of 386,348 inventorsTop 2%
Overall (All Time): #31,541 of 4,157,543Top 1%
67
Patents All Time

Issued Patents All Time

Showing 51–67 of 67 patents

Patent #TitleCo-InventorsDate
8411390 Integrated half coil structure for write assist of high coercivity media Luiz M. Franca-Neto, Bernhard E. Knigge 2013-04-02
8179635 Single pole tip write head design for perpendicular recording media having reduced dependence on soft underlayers Manfred Ernst Schabes, Xiao Z. Wu 2012-05-15
8035922 Write head with integrated coil and shield structure Jeffrey S. Lille 2011-10-11
7894159 Perpendicular write head with independent trailing shield designs Byron Hassberg Lengsfield, III, James Terrence Olson, Thomas Dudley Boone, Jr. 2011-02-22
7467461 Additive gap process to define trailing and side shield gap for a perpendicular write head Christian Rene Bonhote, Quang Le, Neil Leslie Robertson 2008-12-23
7212367 Ampere wire write head with confined magnetic fields Thomas William Clinton, Michael Allen Seigler, Mark William Covington, Werner Scholz, Sharat Batra 2007-05-01
7149055 Inductive write head driven only by an ampere wire Thomas William Clinton, Michael Allen Seigler, Jonathan Hannay 2006-12-12
7099121 Perpendicular magnetic recording head having a reduced field under the return pole and minimal eddy current losses Gregory John Parker, Thomas M. Crawford, Robert Earl Rottmayer, Sharat Batra 2006-08-29
6985339 Disc drive having electromagnetic biased shieldless CPP reader Michael Allen Seigler, Gregory John Parker, Sharat Batra, Robert Earl Rottmayer, Jonathan Hannay 2006-01-10
6813115 Perpendicular magnetic recording head with improved write field gradient Sharat Batra, Gregory John Parker, Jonathan Hannay 2004-11-02
6807032 Magnetic read head wherein the shields are used as electrical leads and have a minimized anisotropic magneto-resistance effect Michael Allen Seigler, Isabel G. Trindade, Michael Minor, Mark William Covington, Rene' Johannes Marinus van de Veerdonk +2 more 2004-10-19
6798623 Biased CPP sensor using spin-momentum transfer Michael Allen Seigler 2004-09-28
6785092 White head for high anisotropy media Mark William Covington, Thomas M. Crawford, Gregory John Parker 2004-08-31
6728065 Single pole magnetic recording head for perpendicular magnetic recording Sharat Batra, Gregory John Parker 2004-04-27
6724583 Adjustable permanent magnet bias Michael Allen Seigler, Gregory John Parker 2004-04-20
6654209 Low resistance lead structure for a low resistance magnetic read head Michael Allen Seigler, Gregory John Parker, Billy W. Crue, Jr. 2003-11-25
6519119 Structure for current perrpendicular to plane giant magnetoresistive read heads Billy W. Crue, Jr. 2003-02-11