HITACHI DEVICE ENGINEERING CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G11C STATIC STORES 11140
 
  
 
G02F DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS 8125
 
  
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 7355
 
  
 
G09G ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION 3148
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 2445
 
  
 
C09K MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR194
 
  
 
G06K RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS 1197
 
  
 
H01J ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS 1127
 
  
 
H03K PULSE TECHNIQUE 1130
 
  
 
H04N PICTORIAL COMMUNICATION, e.g. TELEVISION 1241

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8164731 Liquid crystal display deviceApr 28, 11Apr 24, 12[G02F]
7956976 Liquid crystal display deviceFeb 18, 11Jun 07, 11[G02F]
RE41868 Semiconductor memory deviceFeb 20, 07Oct 26, 10[H01L]
7486345 Liquid crystal display deviceMar 20, 08Feb 03, 09[G02F]
7471261 Display deviceSep 10, 04Dec 30, 08[G09G]
6753099 Phosphor and imaging device using the sameJun 27, 02Jun 22, 04[C09K, H05B]
6677782 Semiconductor integrated circuit and semiconductor logic circuit used in the integrated circuitApr 24, 01Jan 13, 04[H03K]
6456344 LCD having a pattern for preventing a wavy brightness irregularity at the edges of the screen due to drive elements or tape carrier packagesNov 12, 99Sep 24, 02[G02F]
6411359 Liquid crystal display device having smaller frame areaApr 13, 99Jun 25, 02[G02F]
6229745 Semiconductor memoryApr 26, 00May 08, 01[G11C]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2014/0159,245 SEMICONDUCTOR DEVICE AND A METHOD OF MANUFACTURING THE SAMEAbandonedFeb 12, 14Jun 12, 14[H01L]
2009/0115,790 DISPLAY CONTROL DEVICE AND MOBILE ELECTRONIC APPARATUSAbandonedDec 24, 08May 07, 09[G09G]
7238582 Semiconductor device and process of producing the sameExpiredDec 01, 04Jul 03, 07[H01L]
7088332 Display deviceWithdrawnJan 07, 03Aug 08, 06[G09G]
6998878 Semiconductor integrated circuit and semiconductor logic circuit used in the integrated circuitExpiredJan 12, 04Feb 14, 06[H03K]
2005/0280,623 Display control device and mobile electronic apparatusAbandonedJan 07, 05Dec 22, 05[G09G]
6974977 Heterojunction bipolar transistorExpiredJun 10, 03Dec 13, 05[H01L]
6962287 Information access device and information delivery systemExpiredApr 03, 03Nov 08, 05[G06K]
6956255 Semiconductor device and drive circuit using the semiconductor devicesExpiredNov 07, 02Oct 18, 05[H01L]
2005/0156,517 Display deviceAbandonedMar 11, 05Jul 21, 05[H01J]
6835632 Semiconductor device and process of producing the sameExpiredJun 13, 03Dec 28, 04[H01L]
6815822 BICMOS semiconductor integrated circuit device and fabrication process thereofExpiredSep 10, 02Nov 09, 04[H01L]
2004/0213,580 Transmitter and a signal generator in optical transmission systemsAbandonedNov 21, 02Oct 28, 04[H04B, H04J]
6797566 Semiconductor integrated circuit device and process for producing the sameExpiredJan 16, 02Sep 28, 04[H01L]
6785477 Optical receiver using variable negative-capacitance circuitExpiredSep 19, 00Aug 31, 04[H04B]
2004/0150,603 DRIVING METHOD FOR DISPLAY DEVICEAbandonedDec 30, 03Aug 05, 04[G09G]
6771017 Color cathode ray tube and method of manufacturing thereofExpiredJan 08, 02Aug 03, 04[H01J]
6731056 Color cathode ray tube having an improved electron gunExpiredFeb 13, 02May 04, 04[H01J]
6721019 Screen input type display deviceExpiredApr 20, 01Apr 13, 04[G02F]
2004/0068,590 Data processorAbandonedSep 22, 03Apr 08, 04[G06F]

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