RS PATENT HOLDING CORP.

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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 1137

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5235482 Magnetic disk drive incorporating a mechanically damped baseNov 01, 91Aug 10, 93[G11B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6347018 Digital servo control system for use in disk drivesExpiredMay 03, 99Feb 12, 02[G11B]
5995312 High capacity disk driveExpiredSep 07, 93Nov 30, 99[G11B]
5914829 Digital servo control system for use in disk drives, including calibrated controller for fixed-distance seeksExpiredJun 01, 95Jun 22, 99[G11B]
5914830 Digital servo control system including sample integrity tester for reducing effects of spurious sampled position valuesExpiredNov 25, 97Jun 22, 99[G11B]
5684650 Digital servo control system for use in disk drivesExpiredFeb 25, 94Nov 04, 97[G11B]
5680272 Digital servo control system for use in disk drivesExpiredJun 01, 95Oct 21, 97[G11B]
5677809 Digital servo control system for use in disk drives, having state space observer including integral compensatorExpiredJun 01, 95Oct 14, 97[G11B]
5675450 Digital servo control system for use in disk drives using driver saturation modelExpiredFeb 25, 94Oct 07, 97[G11B]
5646797 Digital servo control system for use in disk drivesExpiredJul 07, 92Jul 08, 97[G11B]
5638230 Digital servo control system for use in disk drivesExpiredJun 01, 95Jun 10, 97[G11B]
5602689 Digital servo control system for use in disk drives, including sample integrity tester for reducing effects of spurious sampled position valuesExpiredJun 01, 95Feb 11, 97[G11B]
5127744 Self-acting air bearing spindle for disk driveExpiredMar 30, 90Jul 07, 92[F16C]
5034837 Magnetic disk drive incorporating a magnetic actuator lock and a very small form factorExpiredNov 09, 89Jul 23, 91[G11B]
4890174 Rotary voice coil micro-hard disk drive systemExpiredMar 18, 87Dec 26, 89[G11B]
4757406 High capacity disk driveExpiredSep 13, 85Jul 12, 88[G11B]
4638384 Head positioning mechanism for rotating disk data storage systemExpiredNov 19, 85Jan 20, 87[G11B]
4638383 Micro hard-disk drive systemExpiredNov 19, 85Jan 20, 87[G11B]
4568988 Micro hard-disk drive systemExpiredFeb 22, 84Feb 04, 86[G11B]

Top Inventors for This Owner

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