HENGST GMBH & CO. KG

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B01D SEPARATION 14120
 
  
 
F01M LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL-COMBUSTION ENGINES; CRANKCASE VENTILATING 924
 
  
 
B04B CENTRIFUGES 819
 
  
 
F16K VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING370
 
  
 
F01P COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES 238
 
  
 
B65D CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES 197
 
  
 
F02B INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL 171
 
  
 
F02M SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF 182
 
  
 
F16T STEAM TRAPS OR LIKE APPARATUS FOR DRAINING-OFF LIQUIDS FROM ENCLOSURES PREDOMINANTLY CONTAINING GASES OR VAPOURS, STEAM TRAPS OR LIKE APPARATUS FOR DRAINING-OFF LIQUIDS FROM ENCLOSURES PREDOMINANTLY CONTAINING GASES OR VAPOURS17

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9403107 Liquid filter having a filter bypass valve and filter insert thereforDec 22, 11Aug 02, 16[B01D]
9393506 Fluid filter with replaceable filter insertOct 31, 11Jul 19, 16[B01D]
8871084 Fluid filter comprising a protected liquid sensorFeb 05, 07Oct 28, 14[F02M, F02B, B01D]
8783216 Oil/coolant module with coolant treatment systemJul 12, 05Jul 22, 14[F01P]
8714132 Separator for separating oil mist from the crankcase ventilation gas of an internal combustion engine, and functional module and internal combustion engine comprising a separatorJul 11, 08May 06, 14[F01M]
8691090 Coolant conditioning unit comprising a non-return valveJul 13, 05Apr 08, 14[F01P, B01D]
8635984 Oil module comprising an integrated cooling water channelMay 10, 07Jan 28, 14[F01M]
8449637 Oil mist separator of an internal combustion engineOct 09, 08May 28, 13[B01D]
8256741 Pneumatic pressure regulating valveApr 21, 11Sep 04, 12[F16K, F02M]
8152133 Pneumatic pressure regulating valveApr 21, 11Apr 10, 12[F16K, F02M]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2011/0281,712 CENTRIFUGAL SEPARATORAbandonedNov 05, 09Nov 17, 11[B04B]
2011/0192,472 PNEUMATIC PRESSURE REGULATING VALVEAbandonedApr 21, 11Aug 11, 11[F16K]
7959547 Centrifuge for cleaning a liquidExpiredNov 17, 06Jun 14, 11[B04B]
2009/0314,697 Liquid Filter With A Non-Return Valve In The Filtered Side Flow ChannelAbandonedMay 10, 07Dec 24, 09[B01D]
7473305 Self-flushing electrostatic separatorExpiredOct 14, 04Jan 06, 09[B03C]
2008/0216,660 Electrostatic Precipitator with Replaceable Collecting ElectrodeAbandonedJun 22, 06Sep 11, 08[B03C, F01M]
7422612 Oil separator for the separation of oil from the crankcase ventilation gas of an internal combustion engineExpiredJul 24, 03Sep 09, 08[B01D]
2008/0116,126 Liquid Filter With Contamination-Protected Clean SideAbandonedNov 16, 07May 22, 08[B01D]
7115153 Electric separator with a rinsing cleaning systemExpiredJan 11, 05Oct 03, 06[B03C]
7066726 Device and method for melting and conveying materialExpiredJun 30, 01Jun 27, 06[B29C]
6926825 Fluid filter with removable central component with additional retainerExpiredJan 10, 03Aug 09, 05[B01D]
6921479 Fluid filter with removable central component with additional retainerExpiredDec 01, 00Jul 26, 05[B01D]
2004/0058,795 Rotor for a centrifugeAbandonedSep 23, 03Mar 25, 04[B04B]
6635105 Electrostatic precipitatorExpiredJul 10, 02Oct 21, 03[B03C]
6616817 Electrodeposition deviceExpiredDec 28, 01Sep 09, 03[B23H]
6599144 Sealed testable electrical contact arrangementExpiredOct 16, 00Jul 29, 03[H01R]
6569326 Fluid filter with a central component which can be assembledExpiredAug 13, 01May 27, 03[B01D]
6348103 Method for cleaning electrofilters and electrofilters with a cleaning deviceExpiredMay 23, 00Feb 19, 02[B03B, B08B]
5911213 Process for operating an electric filter for a crankcase ventilatorExpiredFeb 10, 98Jun 15, 99[B01D]

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