HITACHI VLSI ENGINEERING CORP.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 21341
 
  
 
G11C STATIC STORES 20131
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 5442
 
  
 
G03C PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES 343
 
  
 
H03K PULSE TECHNIQUE 2129
 
  
 
B23K SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM 192
 
  
 
G03F PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR 1103
 
  
 
G05F SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES 199
 
  
 
G06J HYBRID COMPUTING ARRANGEMENTS 14
 
  
 
H03M CODING, DECODING OR CODE CONVERSION, IN GENERAL 1110

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
RE37996 Manufacturing method or an exposing method for a semiconductor device or a semiconductor integrated circuit device and a mask used thereforApr 06, 00Feb 18, 03[G03C]
5917752 Nonvolatile semiconductor memory deviceJun 01, 95Jun 29, 99[G11C]
5767544 Semiconductor integrated circuit deviceJun 06, 95Jun 16, 98[G11C]
5736300 Manufacturing method or an exposing method for a semiconductor device or a semiconductor integrated circuit device and a mask used thereforAug 08, 96Apr 07, 98[G03C]
5723903 Thin type semiconductor device, module structure using the device and method of mounting the device on boardJun 07, 95Mar 03, 98[H01L]
5616520 Semiconductor integrated circuit device and fabrication method thereofDec 30, 94Apr 01, 97[H01L]
5615151 Semiconductor integrated circuit operable and programmable at multiple voltage levelsJun 07, 95Mar 25, 97[G11C]
5610420 Semiconductor integrated circuit device and method of manufacturing the sameApr 24, 95Mar 11, 97[H01L]
5578422 Manufacturing method or an exposing method for a semiconductor device or a semiconductor integrated circuit device and a mask used thereforMay 18, 95Nov 26, 96[G03C]
5528548 Voltage converter of semiconductor deviceFeb 07, 95Jun 18, 96[G11C]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7002830 Semiconductor integrated circuit deviceExpiredOct 28, 03Feb 21, 06[G11C]
6501689 Semiconductor integrated circuit deviceExpiredOct 25, 01Dec 31, 02[G11C]
6064606 Semiconductor integrated circuit deviceExpiredDec 31, 97May 16, 00[G11C]
5825773 Switching system for transferring broadcast packet held in broadcast buffer received from input port to output ports according to the state of each output portExpiredMar 18, 92Oct 20, 98[G06F]
5826049 Partial broadcast method in parallel computer and a parallel computer suitable thereforExpiredJul 22, 92Oct 20, 98[G06F]
5754792 Switch circuit comprised of logically split switches for parallel transfer of messages and a parallel processor system using the sameExpiredMar 19, 93May 19, 98[G06F]
5742766 Parallel computing system for synchronizing processors by using partial switch circuits for broadcasting messages after receiving synchronization signals and judging synchronization thereofExpiredMar 19, 93Apr 21, 98[G06F]
5677880 Semiconductor memory having redundancy circuitExpiredMar 21, 95Oct 14, 97[G11C]
5638246 Semiconductor device having a protection circuit, and electronic system including the sameExpiredJan 28, 93Jun 10, 97[H02H]
5617545 Arbitration circuit capable of changing the priority and arrival time of nonselected requestsExpiredJun 09, 93Apr 01, 97[G06F]
5544122 Multiplexed multi-write port semiconductor memoryExpiredMay 19, 94Aug 06, 96[G11C]
5534864 Pipelined analog-to-digital converterExpiredFeb 03, 93Jul 09, 96[H03M]
5523593 Compound semiconductor integrated circuit and optical regenerative repeater using the sameExpiredMar 25, 93Jun 04, 96[H01L]
5517604 Data input/output process and design supporting processExpiredMar 17, 92May 14, 96[G06F]
5497353 Semiconductor memory deviceExpiredMar 30, 95Mar 05, 96[G11C]
5444663 Semiconductor integrated circuit operable and programmable at multiple voltage levelsExpiredJun 04, 92Aug 22, 95[G11C]
5440718 Single semiconductor substrate RAM device utilizing data compressing/expanding mechanism in a multi-microprocessor environmentExpiredSep 19, 94Aug 08, 95[G06F]
5430885 Multi-processor system and co-processor used for the sameExpiredOct 22, 91Jul 04, 95[G06F]
5377333 Parallel processor system having computing clusters and auxiliary clusters connected with network of partial networks and exchangersExpiredSep 15, 92Dec 27, 94[G06F]
5362972 Semiconductor device using whiskersExpiredApr 17, 91Nov 08, 94[H01L]

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