Amdahl Corporation

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 28419
 
  
 
G11C STATIC STORES 1150
 
  
 
H01J ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS 1127
 
  
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 1361
 
  
 
H03B GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS 162
 
  
 
H03K PULSE TECHNIQUE 1130
 
  
 
H03L AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES 179
 
  
 
H03M CODING, DECODING OR CODE CONVERSION, IN GENERAL 1110
 
  
 
H04B TRANSMISSION 1209
 
  
 
H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION 1284

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7092869 Memory address prediction under emulationNov 14, 01Aug 15, 06[G06F]
6453344 Multiprocessor servers with controlled numbered of CPUsMar 31, 99Sep 17, 02[G06F]
6397216 Ordering keys in a table using an ordering maskDec 09, 99May 28, 02[G06F]
6393411 Device and method for authorized funds transferJul 21, 98May 21, 02[G06F]
6289457 Value data system having containers for theft deterrent repositoriesAug 31, 98Sep 11, 01[G06F]
6195750 Method and apparatus for dynamic CPU reconfiguration in a system employing logical processorsMar 09, 99Feb 27, 01[G06F]
D431568 Smart card carrierJun 25, 98Oct 03, 00[1402]
5748976 Mechanism for maintaining data coherency in a branch history instruction cacheOct 18, 93May 05, 98[G06F]
5651113 Method and apparatus for indicating a time-out by generating a time stamp for an input/output (I/O) channel whenever the channel processes an instructionApr 25, 96Jul 22, 97[G06F]
5615327 Apparatus and method for controlling the initiating of a synchronization protocol for synchronizing a plurality of processors in a multi-processor systemApr 04, 95Mar 25, 97[G06F]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2003/0093,649 Flexible caching of translated code under emulationAbandonedNov 14, 01May 15, 03[G06F]
2003/0093,774 State-specific variants of translated code under emulationAbandonedNov 14, 01May 15, 03[G06F]
2003/0093,775 Processing of self-modifying code under emulationAbandonedNov 14, 01May 15, 03[G06F]
6286089 Coupling facility using dynamic address translationExpiredAug 24, 99Sep 04, 01[G06F]
5951316 ConnectorExpiredJul 21, 97Sep 14, 99[H01R]
5588134 System for establishing priority among selected tasks based on location of tasks and sequence that the tasks were stored whereas task is always stored in location with the lowest available addressExpiredSep 25, 92Dec 24, 96[G06F]
5581794 Apparatus for generating a channel time-out signal after 16.38 millisecondsExpiredMay 01, 95Dec 03, 96[G06F]
5574936 Access control mechanism controlling access to and logical purging of access register translation lookaside buffer (ALB) in a computer systemExpiredJan 25, 95Nov 12, 96[G06F]
5517514 Parity checking system with reduced usage of I/O pinsExpiredJul 07, 94May 14, 96[G06F]
5517668 Distributed protocol frameworkExpiredJan 10, 94May 14, 96[G06F]
5502819 Clock distribution system for reducing clock skew between processors in a dual sided tightly coupled systemExpiredNov 02, 92Mar 26, 96[G06F]
5490255 Expedited execution of pipelined command having self-ordering operand processing requirementsExpiredDec 26, 91Feb 06, 96[G06F]
5488706 Retry request system in a pipeline data processing system where each requesting unit preserves the order of requestsExpiredDec 18, 92Jan 30, 96[G06F]
5457781 System having main unit for shutting off clocks to memory upon completion of writing data into memory and information supervising unit to read the dataExpiredJan 04, 93Oct 10, 95[G06F]
5452309 Apparatus and method for forcing hardware errors via scanExpiredDec 18, 92Sep 19, 95[G01R]
5423025 Error handling mechanism for a controller having a plurality of serversExpiredSep 29, 92Jun 06, 95[G06F]
5418794 Error determination scan tree apparatus and methodExpiredDec 18, 92May 23, 95[G06F]
5390323 Microstore reference loggingExpiredAug 05, 91Feb 14, 95[G06F]
5383201 Method and apparatus for locating source of error in high-speed synchronous systemsExpiredDec 23, 91Jan 17, 95[G06F]
5367701 Partitionable data processing system maintaining access to all main storage units after being partitionedExpiredDec 21, 92Nov 22, 94[G06F]

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