DIGITAL EQUIPMENT INTERNATIONAL LIMITED

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 8439
 
  
 
H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION 4281
 
  
 
H04J MULTIPLEX COMMUNICATION 3122
 
  
 
H03M CODING, DECODING OR CODE CONVERSION, IN GENERAL 2109
 
  
 
C12Q MEASURING OR TESTING PROCESSES INVOLVING ENZYMES OR MICRO-ORGANISMS 1124
 
  
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 1158
 
  
 
G08B SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS 193
 
  
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 1361
 
  
 
H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, GENERATORS, OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS 186
 
  
 
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
9218491 Systems and methods for providing security in an electronic deviceApr 13, 10Dec 22, 15[G08B, G06F]
5794242 Temporally and spatially organized databaseApr 08, 97Aug 11, 98[G06F]
5766841 Kit for visually detecting the presence of a clinical specimenJun 07, 95Jun 16, 98[C12Q]
5678045 Method and apparatus for multiscript access to entries in a directoryDec 06, 93Oct 14, 97[G06F]
5644571 Apparatus for message filtering in a network using domain classJun 04, 93Jul 01, 97[H04J]
5610951 Efficient ATM cell synchronizationJun 04, 93Mar 11, 97[H04L]
5592162 Interval width update process in the arithmetic coding methodMar 23, 94Jan 07, 97[H03M]
5574839 Method and apparatus for automatic gap closing in computer aided drawingFeb 14, 94Nov 12, 96[G06F]
5559802 Communication systemsJan 06, 94Sep 24, 96[H04J]
5491692 Hybrid units for a communication networkDec 23, 93Feb 13, 96[H04L]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5479642 Method for maintaining low-overhead and non-coherent cache refresh mechanism with valid status monitoring on time period basisExpiredSep 30, 93Dec 26, 95[G06F]
5432776 Message network monitoringExpiredSep 30, 93Jul 11, 95[H04M]
5167033 Congestion control in computer networksExpiredJun 27, 90Nov 24, 92[G06F, H04J]
4936778 Method and apparatus for producing comparative dataExpiredMay 14, 86Jun 26, 90[G09B]

Top Inventors for This Owner

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