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PUROLATOR FILTER GMBH

Overview
  • Total Patents
    79
About

PUROLATOR FILTER GMBH has a total of 79 patent applications. Its first patent ever was published in 1968. It filed its patents most often in Germany, France and United Kingdom. Its main competitors in its focus markets chemical engineering, engines, pumps and turbines and environmental technology are DONALDSON KOMPANI INK, AIR MAZE GREAT BRITAIN LTD and GIRONDI GIORGIO.

Patent filings in countries

World map showing PUROLATOR FILTER GMBHs patent filings in countries
# Country Total Patents
#1 Germany 58
#2 France 8
#3 United Kingdom 8
#4 Switzerland 2
#5 Italy 1
#6 Sweden 1
#7 United States 1

Patent filings per year

Chart showing PUROLATOR FILTER GMBHs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Obernosterer Gerhard 16
#2 Gebert Hans 15
#3 Weik Hans 15
#4 Schulz Karl-Heinz 11
#5 Weiss Hugo 6
#6 Kamin Klaus O Dr 5
#7 Tagscherer Matthias 4
#8 Kamin Klaus Otto Karl Dr 3
#9 Winkler Josef 3
#10 Wilhelm John R 2

Latest patents

Publication Filing date Title
DE3433443C1 Filter for aerating and venting aerosol-containing spaces
DE3325526C1 Electrically conducting filter cartridge
DE3323525A1 Process for the cross-flow microfiltration of suspensions
DE2834399B1 Filter housing with lubricating oil filter and cooler for internal combustion engines of vehicles
DE2746436B1 Device for cleaning exhaust gases from internal combustion engines
DE2724808A1 DEVICE FOR MATERIAL REMOVAL MACHINING OF ROTATING BODIES
DE2716512A1 IC engine inlet air temp. adjustment - is achieved by control valve connected to cold air duct thermostat and thermostat in mixt. channel
DE2640529A1 DIFFERENTIAL PRESSURE INDICATOR
DE2525714A1 Vent pump especially for fuel feed lines - none return valves are by-passed under engine working conditions
DE2512789A1 FILTER FOR VENTILATION AND VENTILATION OF OIL CONTAINERS
DE2512724A1 Engine air filter has replaceable plate filter insert - slideable on guides with or without sealing means, into non-openable housing
DE2447866A1 Sound absorbent filter for air blowers - has ellipsoidal casing with filter held between absorbent plugs
DE2414932A1 Tank recycle filter - having cartridge mounted on threaded nipple which projects into tank but allows oil to drain
DE2360156A1 Round flat filter elements of folded material - fixed to gaskets of settable foam in moulds
DE2359728A1 Folded thermoplastics-impregnated filter paper - sealed at edges by roughening and pressing thermoplastics
DE2359729A1 Liquid and gas flat filter insert - has folded paper edges surface-roughened to increase thickness to give good edge seal
DE2342154A1 Sound-absorbing air-filters for compressors, etc. - two-part filter-housing being filled and sealed with open-pore polyurethane-foam
DE2342157A1 Air filter for I.C. engines - has discharge pipe with bell mouth projecting into filter housing
DE2342156A1 Engine cold and warm air mixture control - has cover forming diaphragm chamber in recess in intake pipe
DE2342155A1 Circular air filter element - having folded paper medium with inner and outer seals moulded on