Assignee
ZEFTEK INC
US·41 granted patents·1,018 citations·filing 1987–2006
Top patents by PatentIndex Score
41 records- 0198US7128508B2Supplemental restraint for auto-rack railroad car restraint systemZEFTEK INC·Filed 2005·Granted Oct 31, 2006·38 cites·37 claims
- 0296US7004696B2Supplemental restraint for auto-rack railroad car restraint systemZEFTEK INC·Filed 2005·Granted Feb 28, 2006·33 cites·51 claims
- 0395US6926480B2Supplemental restraint for auto-rack railroad car restraint systemZEFTEK INC·Filed 2003·Granted Aug 9, 2005·41 cites·34 claims
- 0494US7150592B2Supplemental restraint for auto-rack railroad car restraint systemZEFTEK INC·Filed 2005·Granted Dec 19, 2006·33 cites·31 claims
- 0588US5145076APlastic knuckle pin with annular relief grooves for preventing pin failure due to fatigueZEFTEK INC·Filed 1990·Granted Sep 8, 1992·60 cites·11 claims
- 0687US5239933AAuto rack panel gap sealer and bumperZEFTEK INC·Filed 1992·Granted Aug 31, 1993·50 cites·17 claims
- 0786US6708625B1Greaseless door lockZEFTEK INC·Filed 2000·Granted Mar 23, 2004·33 cites·26 claims
- 0885US5630519APlastic knuckle pinZEFTEK INC·Filed 1996·Granted May 20, 1997·45 cites·12 claims
- 0984US6561740B1Auto rack railroad car panel bumper guardZEFTEK INC·Filed 2001·Granted May 13, 2003·33 cites·10 claims
- 1084US6553917B1Auto rack railroad car bumper guard deviceZEFTEK INC·Filed 2001·Granted Apr 29, 2003·28 cites·58 claims
- 1183US4917021ADoor finger guide for doors on auto rack carsZEFTEK INC·Filed 1989·Granted Apr 17, 1990·42 cites·30 claims
- 1279US6050199AHatch cover sealing deviceZEFTEK INC·Filed 1998·Granted Apr 18, 2000·41 cites·10 claims
- 1378US5669745ABumper system for an intermodal auto trailerZEFTEK INC·Filed 1995·Granted Sep 23, 1997·41 cites·26 claims
- 1477US5960980AVented hatch coverZEFTEK INC·Filed 1997·Granted Oct 5, 1999·38 cites·51 claims
- 1576US5924654ARailroad car sensing systemZEFTEK INC·Filed 1997·Granted Jul 20, 1999·36 cites·14 claims
- 1676US5415108AAuto rack panel gap sealerZEFTEK INC·Filed 1992·Granted May 16, 1995·30 cites·45 claims
- 1775US5579697AAuto rack panel gap sealing deviceZEFTEK INC·Filed 1995·Granted Dec 3, 1996·35 cites·54 claims
- 1873US6367590B1Cushioned brake beam wear plateZEFTEK INC·Filed 2000·Granted Apr 9, 2002·15 cites·21 claims
- 1972US6257150B1Rapid discharge railcar doorZEFTEK INC·Filed 2000·Granted Jul 10, 2001·14 cites·24 claims
- 2071US4913062ASegmented sliding sill wear plateZEFTEK INC·Filed 1988·Granted Apr 3, 1990·25 cites·9 claims
- 2169US5701825AGap closing device for closing side wall gaps in auto rack carsZEFTEK INC·Filed 1996·Granted Dec 30, 1997·29 cites·26 claims
- 2269US4784068ASegmented sliding sill wear plateZEFTEK INC·Filed 1987·Granted Nov 15, 1988·23 cites·10 claims
- 2368US5908001ACenter plate assembly bearing linerZEFTEK INC·Filed 1997·Granted Jun 1, 1999·20 cites·14 claims
- 2467US6792874B1Railroad car center plate assembly conductive linerZEFTEK INC·Filed 2003·Granted Sep 21, 2004·13 cites·48 claims
- 2564USD497838SRailroad car brake beam wear plate having one or more tapered wallsZEFTEK INC·Filed 2003·Granted Nov 2, 2004·13 cites·1 claims
- 2663US6786160B1Beam isolatorZEFTEK INC·Filed 2003·Granted Sep 7, 2004·7 cites·35 claims
- 2763US5975818AGrating lift padZEFTEK INC·Filed 1997·Granted Nov 2, 1999·22 cites·13 claims
- 2861US5694859AHole covering device for an auto rack car side wall panelZEFTEK INC·Filed 1996·Granted Dec 9, 1997·20 cites·23 claims
- 2960US5682964ABrake beam wear plateZEFTEK INC·Filed 1996·Granted Nov 4, 1997·21 cites·16 claims
- 3058US6527311B1Door lock for a railroad carZEFTEK INC·Filed 2001·Granted Mar 4, 2003·13 cites·48 claims
- 3157USD541193SFreight railroad car reflectorZEFTEK INC·Filed 2006·Granted Apr 24, 2007·11 cites·1 claims
- 3256US6964233B2Beam isolatorZEFTEK INC·Filed 2004·Granted Nov 15, 2005·8 cites·43 claims
- 3356US6296135B1Vent-on-demand hatch coverZEFTEK INC·Filed 1999·Granted Oct 2, 2001·17 cites·12 claims
- 3455US5687650AGap closing device for closing gaps in auto rack car side wallsZEFTEK INC·Filed 1996·Granted Nov 18, 1997·17 cites·17 claims
- 3553US7571685B2Freight railroad car reflectorZEFTEK INC·Filed 2006·Granted Aug 11, 2009·2 cites·14 claims
- 3652US6136240ACenter plate assembly bearing linerZEFTEK INC·Filed 1998·Granted Oct 24, 2000·11 cites·8 claims
- 3752US5598936ACoupler carrier wear plate for long-shank couplersZEFTEK INC·Filed 1995·Granted Feb 4, 1997·14 cites·14 claims
- 3851US5736088AMethod of making a plastic knuckle pinZEFTEK INC·Filed 1996·Granted Apr 7, 1998·12 cites·9 claims
- 3950US4795007ABrake rod protectorZEFTEK INC·Filed 1987·Granted Jan 3, 1989·11 cites·12 claims
- 4048USD541700SFreight railroad car reflectorZEFTEK INC·Filed 2006·Granted May 1, 2007·7 cites·1 claims
- 4148US5738285ASecondary seal for the pneumatic discharge nozzle of a covered hopper carZEFTEK INC·Filed 1995·Granted Apr 14, 1998·16 cites·7 claims
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