HITACHI MICROCOMPUTER SYSTEM LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 14433
 
  
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 4358
 
  
 
G08C TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS 253
 
  
 
F25B REFRIGERATION MACHINES, PLANTS, OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS 167
 
  
 
G05F SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES 199
 
  
 
H04B TRANSMISSION 1209
 
  
 
H04H BROADCAST COMMUNICATION 154
 
  
 
H04J MULTIPLEX COMMUNICATION 1124
 
  
 
H05K PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS 1155

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6249532 Interactive chargeable communication system with billing system thereforJan 26, 99Jun 19, 01[H04H, H04J]
5987589 Microcomputer and microcomputer systemOct 24, 97Nov 16, 99[G06F]
5869888 Semiconductor device with lead structure on principal surface of chipSep 26, 96Feb 09, 99[H01L]
5822361 Wireless LAN system and base station apparatusNov 08, 95Oct 13, 98[H04B]
5809542 Dumping method for dumping data to a dump data storage device that manages the the dumping of data updated since a previous dump requestJan 05, 95Sep 15, 98[G06F]
5748977 Multiply connectable microprocessor and microprocessor systemApr 04, 96May 05, 98[G06F]
5664096 Disk array controller capable of preventing data distortion caused by an interruption of data write operationMay 16, 95Sep 02, 97[G06F]
5623631 Limiting modification of cache entries in a write-back cache based upon the amount of dirty lines in the cacheFeb 03, 95Apr 22, 97[G06F]
5583375 Semiconductor device with lead structure within the planar area of the deviceDec 14, 92Dec 10, 96[H01L]
5583750 Electronic deviceOct 18, 95Dec 10, 96[H05K]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6476467 Semiconductor device and process for producing the sameExpiredJun 01, 01Nov 05, 02[H01L]
6278176 Semiconductor device and process for producing the sameExpiredApr 07, 00Aug 21, 01[H01L]
6182742 Cooling apparatus for use in an electronic systemExpiredJun 19, 97Feb 06, 01[F28D]
6060770 Semiconductor device and process for producing the sameExpiredJan 14, 98May 09, 00[H01L]
6046770 Imaging apparatusExpiredMar 10, 97Apr 04, 00[H04N, G03B]
5946548 Method for manufacturing a MISFET device where the conductive film has a thicknessExpiredAug 13, 97Aug 31, 99[H01L]
5874773 Lead frame having a supporting pad with a plurality of slits arranged to permit the flow of resin so as to prevent the occurrence of voidsExpiredApr 30, 97Feb 23, 99[H01L]
5813018 Automated text extraction from source drawing and composition into target drawing with translated text placement according to source image analysisExpiredMar 16, 95Sep 22, 98[G06T]
5805024 Phase lock loop system including a primary phase lock loop apparatus and a high order phase lock loop apparatusExpiredSep 29, 95Sep 08, 98[H03L, G11B]
5761253 Method and apparatus for signal transmissionExpiredJun 30, 94Jun 02, 98[H04L]
5747387 Removal method of organic matter and system for the sameExpiredAug 25, 95May 05, 98[H01L]
5714405 Semiconductor deviceExpiredSep 26, 96Feb 03, 98[H01L]
5689814 Radio communication apparatus with expanded dynamic rangeExpiredAug 17, 94Nov 18, 97[H04B]
5666520 Graphics display system including graphics processor having a register storing a series of vertex data relating to a polygonal lineExpiredMar 21, 94Sep 09, 97[G06F]
5612933 Apparatus for reproducing recorded information with error detection and correction processingExpiredJun 05, 95Mar 18, 97[G11B]
5564041 Microprocessor for inserting a bus cycle in an instruction set to output an internal information for an emulationExpiredFeb 24, 94Oct 08, 96[G06F]
5526126 Signal processor for VTR which converts color under signals to color signalsExpiredJun 13, 94Jun 11, 96[H04N]
5524175 Neuro-computer system for executing a plurality of controlling algorithmsExpiredOct 27, 93Jun 04, 96[G06F]
5519874 Application execution control method and system for servicing subscribers via a switchboard connected to a computer using an application management tableExpiredMar 12, 91May 21, 96[G06F]
5490259 Logical-to-real address translation based on selective use of first and second TLBsExpiredJul 21, 93Feb 06, 96[G06F]

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