MARIANA HDD B.V.

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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 4134
 
  
 
F01L CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES 154
 
  
 
F02B INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL 171
 
  
 
G03F PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR 1103
 
  
 
G11C STATIC STORES 1150

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6756128 Low-resistance high-magnetoresistance magnetic tunnel junction device with improved tunnel barrierNov 07, 02Jun 29, 04[G11C]
6721144 Spin valves with co-ferrite pinning layerJan 04, 01Apr 13, 04[G11B]
6439185 Multi-cylinder engine for vehicleOct 03, 01Aug 27, 02[F01L, F02B]
5863631 Perpendicular magnetic recording medium and magnetic recording device using the sameMar 06, 97Jan 26, 99[G11B]
5424173 Electron beam lithography system and methodNov 26, 93Jun 13, 95[G03F]
5422761 Disk drive with redundant recordingNov 20, 92Jun 06, 95[G11B]
5202803 Disk file with liquid film head-disk interfaceJul 02, 91Apr 13, 93[G11B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6779249 Method and device for determining in-process characteristics of fabricated magnetic headsExpiredMar 23, 01Aug 24, 04[G11B]
6771440 Adaptive event-based predictive failure analysis measurements in a hard disk driveExpiredDec 18, 01Aug 03, 04[G06F, G11B]
6747845 Modified strain region of strain reactive slider with implanted ions, electrons or neutral atomsExpiredOct 11, 00Jun 08, 04[G11B]
6709774 Magnetic thin film disks with a nonuniform compositionExpiredSep 18, 01Mar 23, 04[G11B]
5452763 Method and apparatus for generating gas in a drilled boreholeExpiredSep 09, 94Sep 26, 95[E21B]
4484241 Automatic lock for head-carriage assembly in a disk fileExpiredMay 17, 82Nov 20, 84[G11B]
4477750 Multi-level disk drive motor speed controlExpiredMay 17, 82Oct 16, 84[H02P]
4475135 Magnetic head air bearing sliderExpiredDec 07, 83Oct 02, 84[H04N]
4471395 Self-ventilated recirculating airflow systemExpiredMay 17, 82Sep 11, 84[G11B]
4408238 Magnetic head arm assemblyExpiredOct 05, 81Oct 04, 83[G11B]

Top Inventors for This Owner

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