WESTERN DIGITAL (FREMONT), INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G11B INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER 31524
 
  
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 17345
 
  
 
G11C STATIC STORES 11140
 
  
 
C23C COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL 1091
 
  
 
B05D PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL 879
 
  
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 8151
 
  
 
B24B MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING 660
 
  
 
B44C PRODUCING DECORATIVE EFFECTS 331
 
  
 
G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS396
 
  
 
G02B OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS 3202

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9361916 Electrical lapping guide for dimensional control of back side of heat assisted magnetic recording deviceMay 27, 14Jun 07, 16[B24B, G11B]
9196270 Method for providing a magnetoresistive element having small critical dimensionsDec 07, 06Nov 24, 15[H01L, G11B]
9190094 Perpendicular recording media with grain isolation initiation layer and exchange breaking layer for signal-to-noise ratio enhancementJun 06, 13Nov 17, 15[G11B]
8689430 Method for providing a perpendicular magnetic recording (PMR)headNov 29, 06Apr 08, 14[H04R, G11B]
8559141 Spin tunneling magnetic element promoting free layer crystal growth from a barrier layer interfaceMay 07, 07Oct 15, 13[G11B]
8455119 Disk having an underlayer that includes a plurality of nonmagnetic layers interleaved with magnetic layersMay 27, 11Jun 04, 13[G11B]
8373945 Magnetic writer having a split yokeApr 23, 07Feb 12, 13[G11B]
8333008 Method for manufacturing a perpendicular magnetic recording transducerJul 29, 05Dec 18, 12[H04R, G11B]
8308921 Mask for increased uniformity in ion beam depositionDec 21, 06Nov 13, 12[C23C]
8141235 Method for manufacturing a perpendicular magnetic recording transducersJun 09, 06Mar 27, 12[H04R, G11B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
8468682 Method for manufacturing perpendicular magnetic recording transducersExpiredMar 06, 12Jun 25, 13[H04R, G11B]
8424192 Method for manufacturing a pole for a magnetic recording headExpiredAug 08, 05Apr 23, 13[H04R, G11B]
7660080 Read/write head with dynamic flying height control by magnetostrictionExpiredApr 30, 04Feb 09, 10[G11B]
7639457 Magnetic sensor with underlayers promoting high-coercivity, in-plane bias layersExpiredFeb 27, 04Dec 29, 09[G11B]
7595967 Method for fabricating a spacer layer for a magnetoresistive elementExpiredSep 07, 04Sep 29, 09[G11B]
7554767 Electrical lapping guide disposed laterally relative to a shield pedestalExpiredJul 01, 05Jun 30, 09[B24B, G11B]
7552523 Method for manufacturing a perpendicular magnetic recording transducerExpiredJul 01, 05Jun 30, 09[H04R, G11B]
7551406 Dual electrical lapping guides with common bonding padExpiredApr 28, 06Jun 23, 09[G11B]
7542246 Transducer with pole tip protrusion compensation layerExpiredApr 18, 06Jun 02, 09[G11B]
7522382 Head stack assembly with interleaved flexure tail bond pad rowsExpiredAug 22, 05Apr 21, 09[G11B]
7493688 Method of manufacturing a magnetic recording transducerExpiredFeb 13, 06Feb 24, 09[H04R, G11B]
7474508 Head gimbal assembly with air bearing slider crown having reduced temperature sensitivityExpiredMar 09, 05Jan 06, 09[G11B]
7440220 Method for defining a touch-down power for head having a flying height actuatorExpiredMay 29, 07Oct 21, 08[G11B]
7436620 Method for selecting an electrical power to be applied to a head-based flying height actuatorExpiredMay 29, 07Oct 14, 08[G11B]
7436631 Heated gimbal for magnetic head to disk clearance adjustmentExpiredJun 30, 04Oct 14, 08[G11B]
7419891 Method and system for providing a smaller critical dimension magnetic element utilizing a single layer maskExpiredFeb 13, 06Sep 02, 08[H01L]
7417832 Magnetoresistive structure having a novel specular and filter layer combinationExpiredApr 26, 05Aug 26, 08[G11B]
7386933 Method of fabricating thin film write heads with a shortened yoke and improved dimension controlExpiredDec 06, 05Jun 17, 08[G11B]
7379269 Write element with reduced yoke length for ultra-high density writingExpiredJul 30, 04May 27, 08[G11B]
7371152 Non-uniform subaperture polishingExpiredDec 22, 06May 13, 08[B24B]

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