DIAMOND ELECTRIC MFG. 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 534
 
  
 
G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR463
 
  
 
H01F MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES 282
 
  
 
G01L MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE 155
 
  
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 1361

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8813732 Internal combustion engine control systemMay 31, 11Aug 26, 14[F02P]
7746079 Ion current detecting apparatus for internal combustion engineAug 09, 05Jun 29, 10[F02P]
7451640 Smoldering determination method of internal combustion engineAug 03, 05Nov 18, 08[G01M]
7448253 Combustion state determination method of internal combustion engineAug 03, 05Nov 11, 08[G01M]
6860256 Ignition apparatus for internal combustion engineFeb 12, 04Mar 01, 05[F02P]
6851417 Ignition device for internal combustion engineFeb 06, 03Feb 08, 05[F02P]
6439029 Method of detecting a knock in an internal combustion engine by means of ionic currentFeb 15, 01Aug 27, 02[G01L]
5567986 Heat sinkMay 27, 94Oct 22, 96[H01L]
5510715 Apparatus for determining the ignition characteristic of an internal combustion engineFeb 02, 93Apr 23, 96[G01M, F02P]
5452603 Method for detecting lean limit by means of ionic current in an internal combustion engineJul 14, 93Sep 26, 95[G01M]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2012/0186,569 INTERNAL COMBUSTION ENGINE IGNITION SYSTEMAbandonedJan 23, 12Jul 26, 12[F02P]
2012/0173,117 COMBUSTION STATE DETERMINATION METHOD FOR SPARK-IGNITED INTERNAL COMBUSTION ENGINEAbandonedSep 10, 10Jul 05, 12[F02D]
7971571 Operation control method on the basis of ion current in internal combustion engineExpiredJan 31, 07Jul 05, 11[G01L, F02P]
2010/0154,509 METHOD FOR DETERMINING AIR FUEL RATIO OF INTERNAL COMBUSTION ENGINE ON THE BASIS OF ION CURRENTAbandonedDec 27, 06Jun 24, 10[G01M]
7506641 Ignition deviceExpiredSep 19, 06Mar 24, 09[F02P]
2009/0013,772 METHOD FOR DETERMINING COMBUSTION STATE OF INTERNAL COMBUSTION ENGINEAbandonedJan 31, 07Jan 15, 09[G01M]
6659081 Arrangement for mounting a sparkplug of an internal combustion engineExpiredFeb 15, 01Dec 09, 03[F02P]
6508302 Heat pipe and method for processing the sameExpiredDec 04, 98Jan 21, 03[F28D]
6456181 Ignition coilExpiredDec 14, 00Sep 24, 02[H01F]
6377154 Integrated ignition coil deviceExpiredDec 14, 00Apr 23, 02[H01F]
6339325 Apparatus for detecting gear positions of automobile transmissionExpiredDec 17, 99Jan 15, 02[G01B]
6323642 Detector for determining rotational speed and position for an internal combustion engineExpiredNov 03, 99Nov 27, 01[G01P, G01B, G01R, F02D]
5535816 Heat sinkExpiredAug 29, 94Jul 16, 96[F28F]

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