Oppama Industry Co., Ltd.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F02P IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES 435
 
  
 
F02B INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL 270
 
  
 
H02K DYNAMO-ELECTRIC MACHINES 2105
 
  
 
B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT 173
 
  
 
F02D CONTROLLING COMBUSTION ENGINES 172
 
  
 
G01K MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR 145
 
  
 
G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR166
 
  
 
G04F TIME-INTERVAL MEASURING 118
 
  
 
G05D SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES 183

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9726095 Engine driven working machineOct 13, 15Aug 08, 17[B60W, F02N, F02P, F02B, F02D]
8161943 Non-contact ignition control device of internal combustion engineSep 05, 07Apr 24, 12[F02P, F02D]
7726181 Ignition timing measuring and display device of internal combustion engineApr 06, 06Jun 01, 10[G01M]
6584957 Contactless ignition system for internal combustion engineJun 24, 02Jul 01, 03[F02P]
5903079 Rotor of rotating equipmentDec 18, 97May 11, 99[H02K]
5811908 Magneto electric generator rotor and an implement for removing this rotorMay 01, 96Sep 22, 98[H02K]
5617373 Time totaling meter and unit of the same for internal combustion engineOct 13, 95Apr 01, 97[G04F]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7913547 Engine rotating meterExpiredApr 06, 06Mar 29, 11[G01M]
6902318 Thermometer for engine of vehicleExpiredFeb 14, 02Jun 07, 05[G01K, G05D]
6873073 Magneto rotorExpiredJun 25, 02Mar 29, 05[H02K]
6814056 Contactless ignition system for internal combustion engineExpiredJul 09, 03Nov 09, 04[F02P]
6802284 Fuel injection device and air-fuel mixture generating device provided with fuel injection deviceExpiredApr 11, 02Oct 12, 04[F02B]
6574085 Power supply apparatus for electrostatic charging and method for sameExpiredSep 06, 00Jun 03, 03[H05B, F02P]
6467147 Magneto electric generator rotor and an implement for removing this rotorExpiredOct 18, 99Oct 22, 02[B23P]
6354522 Electrostatic sprayerExpiredApr 17, 01Mar 12, 02[B05B]
6023828 Magneto electric generator rotor and an implement for removing this rotorExpiredJun 26, 97Feb 15, 00[B23P]
5760574 Engine revolution counter having mode setting terminals and a detachable bodyExpiredOct 21, 94Jun 02, 98[G01P]
D366003 Engine tachometerExpiredNov 01, 94Jan 09, 96[]
D331026 Engine tachometerExpiredDec 08, 89Nov 17, 92[]
D331027 Engine tachometerExpiredDec 08, 89Nov 17, 92[]
D331028 Engine tachometerExpiredDec 08, 89Nov 17, 92[]
D327853 Ignition checkerExpiredDec 08, 89Jul 14, 92[]

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