MARSHALL ELECTRIC CORP.

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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
 
  
 
H01T SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES 323
 
  
 
F02B INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL 171
 
  
 
H01F MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES 183
 
  
 
H01R ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS 1132

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2017/0338,589 SEMI-RIGID HIGH-VOLTAGE EXTENDERMay 18, 16Nov 23, 17[H01R]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9923300 Semi-rigid high-voltage extenderMay 18, 16Mar 20, 18[H01R]
9784232 Forced frequency ignition system for an internal combustion engineApr 01, 16Oct 10, 17[F02P, F02B, H01T]
7594489 High voltage extenderJan 19, 07Sep 29, 09[F02P]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5834903 Double resonant driver ballast for gas lampsExpiredFeb 18, 97Nov 10, 98[H05B]
4904904 Electronic transformer system for powering gaseous discharge lampsExpiredMay 26, 88Feb 27, 90[H05B]
4684912 Winding form for high voltage transformerExpiredJul 09, 86Aug 04, 87[H01F]

Top Inventors for This Owner

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