QUALSTAR CORPORATION

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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
6560061 High density tape library systemJan 04, 01May 06, 03[G11B]
D392147 Simplified tape cartridge rackApr 04, 97Mar 17, 98[0604]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2013/0040,471 INTERPOSER FOR COBRA HEAD STREETLIGHTAbandonedAug 07, 12Feb 14, 13[H01R]
2007/0124,019 Scalable composite rectangular/cylindrical automated data storage library systemAbandonedDec 06, 06May 31, 07[G06F]
7181313 Scalable composite rectangular/cylindrical automated data storage library systemExpiredJun 17, 03Feb 20, 07[G06F]
6762905 High density tape library systemExpiredJan 24, 03Jul 13, 04[G11B]
6381089 Tape cassette storage and accessing system with closely spaced layered cassettesExpiredJul 28, 00Apr 30, 02[G11B]
6271982 Automated precision cassette handling systemExpiredApr 26, 95Aug 07, 01[G11B]
6163139 Boost converter with reduced switching lossExpiredDec 17, 99Dec 19, 00[G05F]
5014141 Low profile, high-capacity streaming tape driveExpiredOct 13, 89May 07, 91[G11B]
4893312 Compact, real time tape drive systemExpiredApr 25, 88Jan 09, 90[G11B]

Top Inventors for This Owner

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