Patents
Sitemap › B01 - Physical or chemical processes or apparatus in general › B01D - Separation › B01D 27 - Cartridge filters of the throw-away type
Patents for B01D 27 - Cartridge filters of the throw-away type (5,673)
12/1991
12/27/1991EP0462122A1 Liquid filter with bypass passage.
12/27/1991EP0267913B1 Twist on disposable filter
12/25/1991CN1015152B Water purification device with intake-funnel
12/25/1991CN1015151B Filter cover for purification insert in water treatment device hollow tube
12/19/1991CA2019276A1 Filters for heavy duty internal combustion engines
12/10/1991CA1292956C Twist on disposable filter
12/10/1991CA1292955C Twist on disposable filter
12/10/1991CA1292953C Filter assembly with threaded collection bowl
12/05/1991DE4017500A1 Internal combustion engine oil filter - has main and auxiliary flow filters for finer filtration
12/04/1991EP0238510B1 Water filtering system
12/03/1991CA1292703C Filtration with biogenetic silica
11/1991
11/20/1991CN2089075U Oil filter with alarm display
11/14/1991WO1991016960A1 Coolant filter with inhibitor pack
10/1991
10/31/1991WO1991016124A1 Modular microporous filter assemblies
10/30/1991EP0191844B1 Single cartride filter
10/29/1991US5061379 Rotation indicator for oil filter mounting in engine block
10/23/1991EP0452592A1 Filter cartridge end cap assembly and method of manufacture
10/23/1991EP0452432A1 Oil filter construction for hand spinning.
10/09/1991EP0250417B1 Method and an apparatus for wrapping an external tape support about a filter element assembly
10/02/1991EP0449137A2 Oil filter for internal-combustion engines
09/1991
09/25/1991EP0447830A2 Filter for liquids
09/24/1991CA1289480C Filter cartridge including external cell separators
08/1991
08/21/1991EP0442365A2 Key system for filter assembly
08/21/1991EP0441789A1 Liquid filter.
08/20/1991US5041221 Double filtering oil filter for internal combustion engines of motor vehicles
08/20/1991US5041219 Dual chamber water filter
08/13/1991WO1991012061A1 Dual chamber water filter
08/13/1991US5039413 Spiral wrapped fluid treatment element
08/13/1991US5039403 Apparatus for depositing a viscous valve opener material within an engine oil filter
08/07/1991EP0439901A1 Oil filter
08/06/1991US5037539 Liquid filter with bypass passage
08/02/1991CA2026860A1 Oil filter
07/1991
07/30/1991US5035797 Key system for filter assembly
07/24/1991EP0438283A1 Oil filter
07/19/1991CA2034245A1 Oil filter
07/09/1991US5030345 Non-drip and full prime filter
07/08/1991EP0452432A4 Oil filter construction for hand spinning.
07/02/1991US5028330 Filter & process for manufacturing filters using material cured by ultraviolet radiation for end caps
06/1991
06/26/1991EP0433664A1 Liquid filter
06/25/1991US5026478 Metal holder and protector for a disposable plastic capsule
06/18/1991US5024761 High-strength quick-disconnect tube filter
05/1991
05/21/1991US5017287 Dual cup-shaped supporting filter body
05/21/1991US5017285 Fuel filter and cartridge assembly
05/08/1991EP0426064A2 High-pressure filter assembly, method and apparatus for forming high pressure filters
04/1991
04/09/1991US5006242 Mechanically secured wool filter cartridge
03/1991
03/27/1991EP0419030A2 Fuel filter with positive water shutoff
03/21/1991WO1991003302A1 Relief valve for liquid filter
03/21/1991WO1991003301A1 Fuel filter
03/21/1991WO1991003300A1 Oil filter construction for hand spinning
03/20/1991EP0417692A2 Filter device with non-bypass edge seal
03/19/1991US5000847 Oil filter construction for hand spinning
03/12/1991CA1281296C Filtering system
03/05/1991US4997556 Oil filter I
03/05/1991US4997555 Fuel filter assembly with heater
03/05/1991US4997554 Temporary anti-drainback valve opener for an oil filter assembly
02/1991
02/13/1991EP0412210A1 Decanter prefilter for diesel engine fuel
02/12/1991US4992166 Locking means connecting housing to closure
02/07/1991WO1991001173A1 Filter device
02/06/1991CN1011480B Filter of depth layer type
02/05/1991US4990247 Relief valve for liquid filter
01/1991
01/23/1991EP0381666A4 Filter cartridge
01/02/1991EP0405447A2 Fuel filter
12/1990
12/27/1990WO1990015654A1 Filter and process for manufacturing filters using material cured by ultraviolet radiation for end caps
12/11/1990US4976854 Oil filter II
12/11/1990US4976852 Fuel filter
11/1990
11/28/1990EP0399539A2 Liquid filtering vessel
11/15/1990WO1990013346A1 Liquid filter with bypass passage
11/13/1990US4969996 Water purification device with an intake funnel
11/13/1990US4969994 Seal arrangement for fluid filters and method
11/06/1990US4968425 Filter of depth layer type
10/1990
10/31/1990EP0394585A2 Oil filter
10/24/1990EP0393277A2 Filter assembly
10/24/1990CN1046291A Filter apparatus for filtering liquid
10/23/1990US4965032 Filter device with non-bypass edge seal
10/23/1990US4964984 Blood filter
10/19/1990CA2014443A1 Portable gravity operated filter
10/17/1990CN1046101A Water repurification method of city water and its equipment
09/1990
09/25/1990US4959141 Fuel filter with positive water shutoff
09/18/1990CA1274191A1 Fluid filter with pleated filter medium
09/11/1990US4956086 Filter cartridge with a lugged concentric closure portion
08/1990
08/31/1990CA2011129A1 Adapter assembly for a filter arrangement
08/21/1990US4950400 Disposable oil filter unit with triple filtration
08/16/1990EP0381666A1 Filter cartridge.
08/14/1990US4948503 Oil filter cover in combination with an oil filter cartridge
07/1990
07/04/1990EP0376443A2 Oil filter
07/04/1990EP0139003B1 Filter assembly
06/1990
06/19/1990US4935134 Filter housing of synthetic material
06/19/1990US4935128 Motorcycle engine lubricating oil filter apparatus
06/19/1990US4935127 Pressure relief valve assembly with plastic, one-piece valve
05/1990
05/29/1990US4929356 Environment protector for replaceable cartridge filters
05/17/1990WO1990005010A1 Filter body with tapered tortuous passageways
05/17/1990WO1990005009A1 Liquid filter
05/15/1990CA1269048A1 Multiple layer precision wound filter
05/02/1990CN2056604U Dynamic membrane water filter using porous ceramic filter as back line
04/1990
04/28/1990CA2001500A1 Filter cartridge for use in a device for filtering liquid in particular drinking water
04/18/1990EP0364299A2 Filtering system
04/11/1990EP0362554A1 An improved double filtering oil filter for internal combustion engines of motor vehicles
04/10/1990US4915837 Hollow fiber sheet filter of alpha cellulose
03/1990
03/28/1990EP0243346B1 Filter
03/06/1990US4906365 Filter for cleaning lubricating oil
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