SECURITY DYNAMICS TECHNOLOGIES, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION 5280
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 3444
 
  
 
H04K SECRET COMMUNICATION; JAMMING OF COMMUNICATION157
 
  
 
H04Q SELECTING 1109

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6985583 System and method for authentication seed distributionMay 04, 99Jan 10, 06[H04L]
6446052 Digital coin tracing using trustee tokensNov 18, 98Sep 03, 02[G06F]
6389442 Efficient finite field multiplication in normal basisDec 28, 98May 14, 02[G06F]
6286022 Efficient finite field basis conversion involving a dual basisNov 18, 98Sep 04, 01[G06F]
5657388 Method and apparatus for utilizing a token for resource accessMar 16, 94Aug 12, 97[H04L]
5485519 Enhanced security for a secure token codeMay 25, 93Jan 16, 96[H04L]
5479512 Method and apparatus for performing concryptionApr 28, 94Dec 26, 95[H04L]
5361062 Personal security systemNov 25, 92Nov 01, 94[H04Q]
5237614 Integrated network security systemJun 07, 91Aug 17, 93[H04K]
5168520 Method and apparatus for personal identificationMar 18, 91Dec 01, 92[H04L]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6411715 Methods and apparatus for verifying the cryptographic security of a selected private and public key pair without knowing the private keyExpiredNov 10, 98Jun 25, 02[H04L]
6240184 Password synchronizationExpiredSep 02, 98May 29, 01[G06F]
5097505 Method and apparatus for secure identification and verificationExpiredOct 19, 90Mar 17, 92[H04K]
5058161 Method and apparatus for secure identification and verificationExpiredOct 31, 89Oct 15, 91[H04K]
5023908 Method and apparatus for personal identificationExpiredApr 21, 89Jun 11, 91[H04L]
4998279 Method and apparatus for personal verification utilizing nonpredictable codes and biocharacteristicsExpiredJan 18, 89Mar 05, 91[H04L, G07F, H04K]
4885778 Method and apparatus for synchronizing generation of separate, free running, time dependent equipmentExpiredNov 27, 85Dec 05, 89[H04L]
4856062 Computing and indicating deviceExpiredNov 24, 87Aug 08, 89[H04L]
4761808 Time code telephone security access systemExpiredMar 18, 87Aug 02, 88[H04M]
4720860 Method and apparatus for positively identifying an individualExpiredNov 30, 84Jan 19, 88[H04L]

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