GROUP 47, 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 13125
 
  
 
B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM6151
 
  
 
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 299
 
  
 
G02B OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS 2203
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 2445
 
  
 
G06K RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS 2196
 
  
 
C03C CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS159
 
  
 
G11C STATIC STORES 1150
 
  
 
H04N PICTORIAL COMMUNICATION, e.g. TELEVISION 1241

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9640214 Digital optical tape storage systemOct 21, 15May 02, 17[G11B]
9508376 Archiving imagery on digital optical tapeApr 10, 14Nov 29, 16[G11B, G06K]
9208813 Digital optical tape storage systemApr 23, 14Dec 08, 15[G11B]
6631492 Multitrack data recording and read out of recorded multitrack digital data for error correctionJan 02, 01Oct 07, 03[G06F, G11C]
6605330 Phase-change recording element for write once applicationsNov 13, 01Aug 12, 03[B32B]
6544617 Phase-change recording element for write once applicationsAug 09, 01Apr 08, 03[B32B]
6497988 Phase-change recording element for write once applicationsFeb 22, 01Dec 24, 02[G11B]
6442126 Apparatus for recording and simultaneously reading information recorded on a moveable optical recording medium using objective lens and beam splitterJan 03, 00Aug 27, 02[G11B]
6396793 Preheating beams for optical recordingAug 30, 00May 28, 02[G11B]
6388819 High numerical aperture objective lens assemblyJan 12, 01May 14, 02[G02B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5196294 Erasable optical recording materials and methods based on tellurium alloysExpiredSep 17, 90Mar 23, 93[G03C, G11B]

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