CERTANCE LLC

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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 21117
 
  
 
G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS198
 
  
 
G03B APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR 196
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 1446
 
  
 
H03K PULSE TECHNIQUE 1130

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6317283 Methods and apparatus for calibration of a rotating scanner to a track recorded on a tapeFeb 01, 00Nov 13, 01[G11B]
6101064 Methods and apparatus for efficiently controlling a read/write head in a computer disk driveFeb 10, 98Aug 08, 00[G11B]
6079651 Tape coupling arrangement for single reel cartridgeOct 23, 97Jun 27, 00[G03B]
6072653 Methods and apparatus for calibration of a rotating scanner to a track recorded on a tapeOct 01, 97Jun 06, 00[G11B]
6059212 Tape moving mechanism using a direct drive motorFeb 05, 96May 09, 00[G11B]
6061199 Method and arrangement for servoing and formatting magnetic recording tapeSep 17, 99May 09, 00[G11B]
6031681 Method and arrangement for servoing and formatting magnetic recording tapeMay 01, 98Feb 29, 00[G11B]
5402285 Five and one-quarter inch form factor combination DAT tape drive and cassette magazine loaderApr 24, 92Mar 28, 95[G11B]
5396376 Multi-track embedded servo recording format and methodMar 23, 92Mar 07, 95[G11B]
5381292 Method for self-cleaning dat drive tape headsJul 13, 93Jan 10, 95[G11B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7292410 Tape drive head cleanerExpiredOct 31, 03Nov 06, 07[G11B]
7180708 Stationary tape guide with spring arrangement and ceramic guide portion mating with plastic mounting portionExpiredMay 24, 05Feb 20, 07[G11B]
7154695 System and method for controlling the speed of a tape driveExpiredNov 10, 04Dec 26, 06[G11B]
7097125 Tape drive with automatic adaptation for different size tape cassettesExpiredMay 20, 04Aug 29, 06[G11B]
2006/0040,425 Circuit element and method of manufacturing the sameAbandonedMar 23, 05Feb 23, 06[H01L]
2004/0264,122 Computer peripheral device mounting arrangement with two locking elementsAbandonedMay 20, 04Dec 30, 04[G06F]
2003/0123,188 Magnetic tape cartridgeAbandonedFeb 21, 03Jul 03, 03[G11B]
6470291 Velocity feedback measurement methodExpiredSep 24, 99Oct 22, 02[G11B]
6443650 Connection structure of lateral insert type yoke and shaftExpiredJan 31, 01Sep 03, 02[F16D]
6424481 Five and one-quarter inch form factor combination DAT tape drive and cassette magazine loaderExpiredJan 02, 97Jul 23, 02[G11B]
6404598 Flexible circuit routing configuration for a fine/coarse positioner for a tape driveExpiredSep 22, 99Jun 11, 02[G11B]
6130792 Flat servo bursts for arcuate track scannerExpiredJul 09, 97Oct 10, 00[G11B]
6115218 Tape support system for arcuate scan rotating headExpiredMay 20, 97Sep 05, 00[G11B]
6095446 Tape drive with movable centering guide and door opening arrangementExpiredMar 01, 99Aug 01, 00[G11B]
6088183 Arcuate scan read/write assemblyExpiredNov 10, 94Jul 11, 00[G11B]
6043953 Gear train capstan drive assembly for a tape driveExpiredJun 20, 97Mar 28, 00[G11B]
6038099 Multiple cartridge tape auto loader utilizing a drive plate for positioning of drive mechanismExpiredJul 14, 97Mar 14, 00[G11B]
5986846 Methods and apparatus for track centering an arcuate scanner head assemblyExpiredJul 09, 97Nov 16, 99[G11B]
5978172 Voice coil driven positioner for coarse and fine positioning of magnetic head in multi-track tape driveExpiredDec 22, 95Nov 02, 99[G11B]
5940238 Mechanism to reduce adjacent track interference in a magnetic tape data storage systemExpiredDec 12, 96Aug 17, 99[G11B]

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