Stratus Computer, Inc.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 11436
 
  
 
H04M TELEPHONIC COMMUNICATION 2161
 
  
 
H01R ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS 1132

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5940490 Call processing to provide number portabilityAug 23, 95Aug 17, 99[H04M]
5802265 Transparent fault tolerant computer systemDec 01, 95Sep 01, 98[G06F]
5781910 Preforming concurrent transactions in a replicated database environmentSep 13, 96Jul 14, 98[G06F]
5694541 System console terminal for fault tolerant computer systemOct 20, 95Dec 02, 97[G06F]
5625681 Method and apparatus for telephone number portabilityAug 11, 95Apr 29, 97[H04M]
5479648 Method and apparatus for switching clock signals in a fault-tolerant computer systemAug 30, 94Dec 26, 95[G06F]
5475860 Input/output control system and method for direct memory transfer according to location addresses provided by the source unit and destination addresses provided by the destination unitJun 15, 92Dec 12, 95[G06F]
5423024 Fault tolerant processing section with dynamically reconfigurable votingMay 13, 92Jun 06, 95[G06F]
5390081 Fault-tolerant power distribution system for rack-mounted hardwareMar 22, 93Feb 14, 95[H01R]
5379381 System using separate transfer circuits for performing different transfer operations respectively and scanning I/O devices status upon absence of both operationsAug 12, 91Jan 03, 95[G06F]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6128196 Circuit board chassisExpiredApr 27, 98Oct 03, 00[H05R]
6115258 Circuit board chassisExpiredApr 27, 98Sep 05, 00[H01R]
5968185 Transparent fault tolerant computer systemExpiredJul 16, 98Oct 19, 99[G06F]
5838899 Digital data processing methods and apparatus for fault isolationExpiredJun 05, 96Nov 17, 98[182., G06F]
5838900 Digital data processing methods and apparatus for fault detection and fault toleranceExpiredDec 03, 96Nov 17, 98[G06F]
5630056 Digital data processing methods and apparatus for fault detection and fault toleranceExpiredSep 20, 94May 13, 97[G06F]
5586253 Method and apparatus for validating I/O addresses in a fault-tolerant computer systemExpiredDec 15, 94Dec 17, 96[G06F]
5559459 Clock signal generation arrangement including digital noise reduction circuit for reducing noise in a digital clocking signalExpiredDec 29, 94Sep 24, 96[H03K]
5555372 Fault-tolerant computer system employing an improved error-broadcast mechanismExpiredDec 21, 94Sep 10, 96[G06F]
5049701 EMI cabinet with improved interference suppressionExpiredSep 28, 89Sep 17, 91[H05K]
5020024 Method and apparatus for detecting selected absence of digital logic synchronismExpiredJan 16, 87May 28, 91[G06F]
4974144 Digital data processor with fault-tolerant peripheral interfaceExpiredJun 16, 89Nov 27, 90[G06F]
4974150 Fault tolerant digital data processor with improved input/output controllerExpiredJun 16, 89Nov 27, 90[G06F]
4939643 Fault tolerant digital data processor with improved bus protocolExpiredJul 29, 87Jul 03, 90[G06F]
4931922 Method and apparatus for monitoring peripheral device communicationsExpiredJul 29, 87Jun 05, 90[G06F]
4926315 Digital data processor with fault tolerant peripheral bus communicationsExpiredJul 29, 87May 15, 90[G06F]
4920540 Fault-tolerant digital timing apparatus and methodExpiredFeb 25, 87Apr 24, 90[H04Q, G06F]
4866604 Digital data processing apparatus with pipelined memory cyclesExpiredAug 01, 88Sep 12, 89[G06F]
4816990 Method and apparatus for fault-tolerant computer system having expandable processor sectionExpiredNov 05, 86Mar 28, 89[G06F]
4750177 Digital data processor apparatus with pipelined fault tolerant bus protocolExpiredSep 08, 86Jun 07, 88[G06F]

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