Assignee
UNITED STATES PIPE FOUNDRY
US·38 granted patents·4 pending applications·1,027 citations·filing 1971–2014
Top patents by PatentIndex Score
42 records- 0194US5295697ARestraining element for pressure pipe jointsUNITED STATES PIPE FOUNDRY·Filed 1992·Granted Mar 22, 1994·125 cites·3 claims
- 0293US5464228ARestraining element for pressure pipe jointsUNITED STATES PIPE FOUNDRY·Filed 1993·Granted Nov 7, 1995·108 cites·4 claims
- 0392US8733424B1Centrifugal casting method and apparatusUNITED STATES PIPE FOUNDRY·Filed 2013·Granted May 27, 2014·7 cites·18 claims
- 0489USD513793SPipe glandUNITED STATES PIPE FOUNDRY·Filed 2004·Granted Jan 24, 2006·37 cites·1 claims
- 0587USD515673SPipe gland earUNITED STATES PIPE FOUNDRY·Filed 2004·Granted Feb 21, 2006·34 cites·1 claims
- 0686US8910699B2Centrifugal casting method and apparatusUNITED STATES PIPE FOUNDRY·Filed 2014·Granted Dec 16, 2014·4 cites·12 claims
- 0786US4532957AGuides for gate valvesUNITED STATES PIPE FOUNDRY·Filed 1983·Granted Aug 6, 1985·46 cites·5 claims
- 0885US4867488ARestrained joint with gripper glandUNITED STATES PIPE FOUNDRY·Filed 1988·Granted Sep 19, 1989·61 cites·10 claims
- 0983USD593642SPipe glandUNITED STATES PIPE FOUNDRY·Filed 2007·Granted Jun 2, 2009·26 cites·1 claims
- 1083US5269569ABell lip restraining configuration for pressure pipeUNITED STATES PIPE FOUNDRY·Filed 1992·Granted Nov 23, 1993·59 cites·4 claims
- 1177US8960263B2Centrifugal casting method and apparatusUNITED STATES PIPE FOUNDRY·Filed 2014·Granted Feb 24, 2015·1 cites·12 claims
- 1277US4540204ARestrained pipe jointUNITED STATES PIPE FOUNDRY·Filed 1983·Granted Sep 10, 1985·46 cites·4 claims
- 1377US4407893APolyolefin coating containing an ionomer for metal substratesUNITED STATES PIPE FOUNDRY·Filed 1981·Granted Oct 4, 1983·37 cites·32 claims
- 1476US4280732AMethod and apparatus for miningUNITED STATES PIPE FOUNDRY·Filed 1979·Granted Jul 28, 1981·22 cites·34 claims
- 1574USD620086SPipe glandUNITED STATES PIPE FOUNDRY·Filed 2009·Granted Jul 20, 2010·17 cites·1 claims
- 1674US4026586APlain end pipe jointUNITED STATES PIPE FOUNDRY·Filed 1976·Granted May 31, 1977·35 cites·1 claims
- 1772US3936451AProcess for producing salts of hexamethylenetetramineUNITED STATES PIPE FOUNDRY·Filed 1974·Granted Feb 3, 1976·10 cites·4 claims
- 1871US5336998ASensor for detecting faults in a magnetized ferrous object using hall effect elementsUNITED STATES PIPE FOUNDRY·Filed 1992·Granted Aug 9, 1994·44 cites·11 claims
- 1968US2014134456A1Methods of making protective coating for metal surfacesUNITED STATES PIPE FOUNDRY·Filed 2014·Application pending·0 cites
- 2068US2014166474A1Protective coating for metal surfacesUNITED STATES PIPE FOUNDRY·Filed 2014·Application pending·0 cites
- 2167US6214203B1Anodic encasement corrosion protection system for pipe and appurtenances, and metallic components thereofUNITED STATES PIPE FOUNDRY·Filed 1999·Granted Apr 10, 2001·24 cites·39 claims
- 2267US4108481AGasketed pipe jointUNITED STATES PIPE FOUNDRY·Filed 1976·Granted Aug 22, 1978·28 cites·4 claims
- 2365US4014827ASubstrate reinforced rubber structure and compound for forming sameUNITED STATES PIPE FOUNDRY·Filed 1975·Granted Mar 29, 1977·19 cites·6 claims
- 2464US4113286AHanger for pipeUNITED STATES PIPE FOUNDRY·Filed 1977·Granted Sep 12, 1978·24 cites·5 claims
- 2562US2014262118A1Centrifugal casting method and apparatusUNITED STATES PIPE FOUNDRY·Filed 2014·Application pending·0 cites
- 2661US4007298APolyethylene coating for ferrous metalsUNITED STATES PIPE FOUNDRY·Filed 1975·Granted Feb 8, 1977·22 cites·2 claims
- 2758US4685705ALarge deflection pipe couplingUNITED STATES PIPE FOUNDRY·Filed 1986·Granted Aug 11, 1987·23 cites·8 claims
- 2855US4756784AMethod of making pipe-joint gasketUNITED STATES PIPE FOUNDRY·Filed 1986·Granted Jul 12, 1988·25 cites·8 claims
- 2955US4660866ARestrained pipe jointUNITED STATES PIPE FOUNDRY·Filed 1986·Granted Apr 28, 1987·23 cites·5 claims
- 3054USD514669SPipe gland earUNITED STATES PIPE FOUNDRY·Filed 2004·Granted Feb 7, 2006·8 cites·1 claims
- 3153US3964522ABevel pipe winderUNITED STATES PIPE FOUNDRY·Filed 1971·Granted Jun 22, 1976·15 cites·3 claims
- 3249US4871197AEarthquake resistant pipe jointsUNITED STATES PIPE FOUNDRY·Filed 1988·Granted Oct 3, 1989·23 cites·9 claims
- 3349US4506931AMethod and apparatus for miningUNITED STATES PIPE FOUNDRY·Filed 1981·Granted Mar 26, 1985·17 cites·6 claims
- 3449US4437242AFlexible gauge for inside dimensionsUNITED STATES PIPE FOUNDRY·Filed 1982·Granted Mar 20, 1984·11 cites·3 claims
- 3546US4832084ADual graphite structured pipeUNITED STATES PIPE FOUNDRY·Filed 1988·Granted May 23, 1989·5 cites·3 claims
- 3644US2004155458A1Locking device and method for securing telescoped pipeUNITED STATES PIPE FOUNDRY·Filed 2004·Application pending·0 cites
- 3742US3964521ABevel pipe winding method and productUNITED STATES PIPE FOUNDRY·Filed 1974·Granted Jun 22, 1976·9 cites·4 claims
- 3840US4128265AHydrant valve connectionUNITED STATES PIPE FOUNDRY·Filed 1977·Granted Dec 5, 1978·10 cites·3 claims
- 3932US7252316B2Rotation hookUNITED STATES PIPE FOUNDRY·Filed 2003·Granted Aug 7, 2007·1 cites·15 claims
- 4030US4791976AMethod of making dual graphite structured pipeUNITED STATES PIPE FOUNDRY·Filed 1987·Granted Dec 20, 1988·8 cites·9 claims
- 4130US4437501AContoured dunnage cutterUNITED STATES PIPE FOUNDRY·Filed 1982·Granted Mar 20, 1984·7 cites·4 claims
- 4220US4750194AClock synchronization systemUNITED STATES PIPE FOUNDRY·Filed 1987·Granted Jun 7, 1988·6 cites·5 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →