Assignee
FILTERTEK INC
US·53 granted patents·1 pending application·3,389 citations·filing 1977–2009
Top patents by PatentIndex Score
54 records- 0198US4113627AProcess for making hermetically sealed filter units and filters made therebyFILTERTEK INC·Filed 1977·Granted Sep 12, 1978·239 cites·13 claims
- 0297US4749003ACenter flow check valveFILTERTEK INC·Filed 1987·Granted Jun 7, 1988·145 cites·11 claims
- 0397US4414172AProcess and apparatus for sealing a plurality of filter elementsFILTERTEK INC·Filed 1982·Granted Nov 8, 1983·151 cites·14 claims
- 0495US5688460AProcess for making hermetically sealed filter unitsFILTERTEK INC·Filed 1996·Granted Nov 18, 1997·128 cites·15 claims
- 0595US5360413ANeedleless access deviceFILTERTEK INC·Filed 1993·Granted Nov 1, 1994·583 cites·39 claims
- 0695US5049274AFriction welding process and filter formed therebyFILTERTEK INC·Filed 1989·Granted Sep 17, 1991·97 cites·22 claims
- 0794US6168653B1Pressure transmission apparatusFILTERTEK INC·Filed 1998·Granted Jan 2, 2001·112 cites·18 claims
- 0893US4828694AFilter with filtration envelope spacing meansFILTERTEK INC·Filed 1988·Granted May 9, 1989·96 cites·23 claims
- 0992US5556541AProcess for making hermetically sealed filter units and filters made therebyFILTERTEK INC·Filed 1994·Granted Sep 17, 1996·89 cites·8 claims
- 1090US7360556B2Check valveFILTERTEK INC·Filed 2006·Granted Apr 22, 2008·25 cites·20 claims
- 1190US5417860ABottle filter and pouring deviceFILTERTEK INC·Filed 1993·Granted May 23, 1995·78 cites·12 claims
- 1290US4608166APress fit filterFILTERTEK INC·Filed 1985·Granted Aug 26, 1986·82 cites·16 claims
- 1389US8038123B2Fluid handling device and method of making sameFILTERTEK INC·Filed 2009·Granted Oct 18, 2011·58 cites·25 claims
- 1489US7673653B2Check valveFILTERTEK INC·Filed 2006·Granted Mar 9, 2010·68 cites·18 claims
- 1586US6451205B1Filter manufacturing process using a combined welding and cutting stepFILTERTEK INC·Filed 2000·Granted Sep 17, 2002·44 cites·29 claims
- 1686US5049271AFuel tank filterFILTERTEK INC·Filed 1990·Granted Sep 17, 1991·67 cites·14 claims
- 1785US4826598AHermetically sealed transmission filterFILTERTEK INC·Filed 1985·Granted May 2, 1989·56 cites·11 claims
- 1884US7041217B1Filter ringsFILTERTEK INC·Filed 2004·Granted May 9, 2006·78 cites·38 claims
- 1983US6450722B1Semisolid product dispensing headFILTERTEK INC·Filed 2000·Granted Sep 17, 2002·22 cites·68 claims
- 2082US7306768B2Filter for medical and laboratory use, especially for blood analysis and the likeFILTERTEK INC·Filed 2004·Granted Dec 11, 2007·26 cites·60 claims
- 2180US7997293B2Valve apparatus, combination filter valve assemblies and devices, systems, and methods including the sameFILTERTEK INC·Filed 2007·Granted Aug 16, 2011·11 cites·15 claims
- 2280US7520489B2Fluid handling device and method of making sameFILTERTEK INC·Filed 2004·Granted Apr 21, 2009·83 cites·56 claims
- 2379US7717116B2Apparatus for connecting a respiratory device with a patientFILTERTEK INC·Filed 2006·Granted May 18, 2010·20 cites·20 claims
- 2477US4966199ADiaphragm-type center flow check valveFILTERTEK INC·Filed 1989·Granted Oct 30, 1990·158 cites·27 claims
- 2577US4601820ALow-profile inline filterFILTERTEK INC·Filed 1984·Granted Jul 22, 1986·34 cites·18 claims
- 2674US4400277ALow-profile inline filterFILTERTEK INC·Filed 1981·Granted Aug 23, 1983·32 cites·6 claims
- 2773USD276494SPlastic landscape edging unitFILTERTEK INC·Filed 1982·Granted Nov 27, 1984·20 cites·1 claims
- 2872US6506237B2Pressure transmission apparatusFILTERTEK INC·Filed 2000·Granted Jan 14, 2003·9 cites·7 claims
- 2970US6221065B1Self-priming needle-free “Y”-adapterFILTERTEK INC·Filed 1998·Granted Apr 24, 2001·134 cites·14 claims
- 3070USD363801SBorder edgeFILTERTEK INC·Filed 1993·Granted Oct 31, 1995·19 cites·1 claims
- 3169US7083722B2Filter manufacturing process using a combined welding and cutting stepFILTERTEK INC·Filed 2002·Granted Aug 1, 2006·10 cites·11 claims
- 3269US5766469AOrifice filterFILTERTEK INC·Filed 1996·Granted Jun 16, 1998·33 cites·27 claims
- 3368US7354470B2Multiple retainer bridgeFILTERTEK INC·Filed 2004·Granted Apr 8, 2008·20 cites·20 claims
- 3467US7516765B2Air vent foil cutterFILTERTEK INC·Filed 2005·Granted Apr 14, 2009·5 cites·49 claims
- 3567US5741134AFilter and universal adapter for use with dental aspirator tipsFILTERTEK INC·Filed 1995·Granted Apr 21, 1998·48 cites·27 claims
- 3666US7282140B2Sump filter with filter element cartridgeFILTERTEK INC·Filed 2004·Granted Oct 16, 2007·16 cites·40 claims
- 3766US7141097B2Bacterial retentive, air venting, intravenous filterFILTERTEK INC·Filed 2004·Granted Nov 28, 2006·40 cites·21 claims
- 3866US6890119B2Semisolid product dispensing headFILTERTEK INC·Filed 2002·Granted May 10, 2005·6 cites·24 claims
- 3966US5688121ACorrugated saliva ejectorFILTERTEK INC·Filed 1995·Granted Nov 18, 1997·43 cites·12 claims
- 4065US6228069B1Needleless access deviceFILTERTEK INC·Filed 1999·Granted May 8, 2001·125 cites·20 claims
- 4161US6575309B1Filter for fluidsFILTERTEK INC·Filed 1999·Granted Jun 10, 2003·21 cites·15 claims
- 4260US6736273B2Filter for fluids, especially fuelsFILTERTEK INC·Filed 2002·Granted May 18, 2004·10 cites·21 claims
- 4356US6904929B2Check valve and filter assembly incorporating such valve, especially for water cooler assembliesFILTERTEK INC·Filed 2004·Granted Jun 14, 2005·6 cites·112 claims
- 4455US6044859AValve apparatus and methodFILTERTEK INC·Filed 1997·Granted Apr 4, 2000·76 cites·24 claims
- 4555US5827429AIntravenous filter deviceFILTERTEK INC·Filed 1996·Granted Oct 27, 1998·80 cites·23 claims
- 4654US6932110B2Unidirectional valve applianceFILTERTEK INC·Filed 2003·Granted Aug 23, 2005·12 cites·21 claims
- 4749USD541935SValve for fluids, especially for the medical techniqueFILTERTEK INC·Filed 2005·Granted May 1, 2007·6 cites·1 claims
- 4849US6461557B1Method of molding an O-ring retainer in components using interlocking moldsFILTERTEK INC·Filed 2000·Granted Oct 8, 2002·6 cites·17 claims
- 4942USD310421SFlat brick border sectionFILTERTEK INC·Filed 1987·Granted Sep 4, 1990·4 cites·1 claims
- 5041US6105789APlastic component with O-ring retainerFILTERTEK INC·Filed 1999·Granted Aug 22, 2000·10 cites·6 claims
Showing the top 50 of 54 patent records by PatentIndex Score.
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