Hitachi Automotive Engineering Co., Ltd.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G01F MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME 1148
 
  
 
F02D CONTROLLING COMBUSTION ENGINES 667
 
  
 
F02P IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES 435
 
  
 
H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, GENERATORS, OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS 483
 
  
 
F02M SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF 380
 
  
 
H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY 3117
 
  
 
B60L ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL 274
 
  
 
F01N GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES 271
 
  
 
G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR265
 
  
 
B21K MAKING FORGED OR PRESSED PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS, WHEELS 122

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6189379 Thermal type air flow measuring instrument for internal combustion engineJul 28, 99Feb 20, 01[G01F]
5968100 Vehicle control method and system thereforOct 28, 97Oct 19, 99[G06F]
5939628 Thermal type air flow measuring instrument for internal combustion engineJul 09, 98Aug 17, 99[G01F]
5921226 Apparatus for controlling the fuel injection quantityJun 24, 97Jul 13, 99[F02D]
5789673 Thermal type air flow measuring instrument for internal combustion engineMay 30, 95Aug 04, 98[G01F]
5659254 Capacitance type sensor deviceMay 31, 95Aug 19, 97[G01R]
5631415 Air flow rate measuring deviceAug 14, 95May 20, 97[G01F]
5631796 Electric vehicle control systemNov 03, 95May 20, 97[H02H]
5608309 Vehicle-use alternating current generator control systemFeb 24, 94Mar 04, 97[H02P]
5598822 Knocking detection method for internal combustion engines and ignition timing control method thereforApr 06, 95Feb 04, 97[F02P]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6590774 Ignition apparatus for internal combustion engine with improved electrical insulation plate including berylliaExpiredNov 10, 99Jul 08, 03[H05K]
5842457 Distributor for internal combustion enginesExpiredJan 03, 97Dec 01, 98[F02P]
5785627 Torque feedback shift control device and methodExpiredNov 18, 96Jul 28, 98[F16H]
5718195 Intake pipe for internal combustion engineExpiredOct 03, 96Feb 17, 98[F02M]
5695427 Automatic transmission control systemExpiredJul 19, 96Dec 09, 97[B60K]
5688207 Control apparatus for automatic transmission and control method thereforeExpiredOct 02, 96Nov 18, 97[F02D, F16H]
5678760 Cooling system of electric automobile and electric motor used thereforExpiredSep 29, 93Oct 21, 97[B60K]
5676851 Method of making a capacitance type acceleration sensorExpiredSep 23, 96Oct 14, 97[H01L, B44C]
5664542 Electronic throttle systemExpiredFeb 29, 96Sep 09, 97[F02D]
5658213 Power train control apparatus and method for a vehicleExpiredJul 25, 95Aug 19, 97[F16H]
5654506 Heat type air flow meterExpiredJun 07, 95Aug 05, 97[G01F]
5651352 Distributor for internal combustion enginesExpiredJan 25, 95Jul 29, 97[F02P]
5628053 Integrated multilayered microwave circuit and a method of fabricating itExpiredDec 11, 95May 06, 97[H04B, H01Q]
5613920 Torque feedback shift control device and methodExpiredFeb 14, 95Mar 25, 97[F16H]
5610483 Control equipment for electric vehicle and control method thereofExpiredMar 17, 95Mar 11, 97[B60L]
5608626 Drive shaft torque controlling apparatus for use in a vehicle having a power transmission mechanism and method thereforExpiredMar 25, 94Mar 04, 97[G06G]
5600215 Controller for electric vehicleExpiredJul 07, 95Feb 04, 97[H02P]
5598336 Automatic transmission control system with variable lockup timingExpiredJun 01, 95Jan 28, 97[G06F, G06E, F16H]
5588936 Control apparatus for automatic transmission and control method thereforeExpiredApr 27, 95Dec 31, 96[F02D, F16H]
5572965 Intake pipe for internal combustion engineExpiredMay 01, 95Nov 12, 96[F02M]

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