SEJONG IND. CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F01N GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES 667
 
  
 
F02G HOT-GAS OR COMBUSTION- PRODUCT POSITIVE-DISPLaCEMENT ENGINE PLANTS 221
 
  
 
F28D HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT 243
 
  
 
F28F DETAILS OF HEAT-EXCHANGE OR HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION 250
 
  
 
F01M LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL-COMBUSTION ENGINES; CRANKCASE VENTILATING 132
 
  
 
F01P COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES 139
 
  
 
G01F MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME 158
 
  
 
G01K MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR 145
 
  
 
G05D SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES 183
 
  
 
G10K SOUND-PRODUCING DEVICES 134

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2017/0322,067 DEVICE AND METHOD FOR DETECTING WATER LEVEL OF WATER TRAP IN FUEL CELLDec 07, 16Nov 09, 17[G01K, G01F]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9617905 Apparatus for exhaust heat recovery with embedded valve actuatorNov 12, 14Apr 11, 17[F01N, F28D, G05D, F01P, F28F, F02G]
9115619 Thermoelectric generator of vehicleNov 29, 12Aug 25, 15[H01L, F01N]
8904771 Exhaust heat recovery apparatus for vehicleNov 04, 11Dec 09, 14[F01M, F01N, F28D, F28F, F02G]
8181737 Condensed water discharge apparatus of mufflerAug 27, 10May 22, 12[F01N]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2014/0166,392 VARIABLE VALVE APPARATUS AND MUFFLER PROVIDED WITH THE SAMEAbandonedNov 22, 13Jun 19, 14[F01N]
2014/0158,462 VARIABLE VALVE FOR EXHAUST PIPEAbandonedNov 22, 13Jun 12, 14[F01N]
2013/0081,721 EXHAUST-DOWNPIPE FOR VEHICLEAbandonedDec 12, 11Apr 04, 13[F15D]
2011/0126,531 VARIABLE MUFFLERAbandonedNov 30, 10Jun 02, 11[F01N]

Top Inventors for This Owner

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