Assignee
AMERICAN CAST IRON PIPE CO
US·26 granted patents·858 citations·filing 1974–2000
Top patents by PatentIndex Score
26 records- 0192US5197768ARestrained joint having elastomer-backed locking segmentsAMERICAN CAST IRON PIPE CO·Filed 1991·Granted Mar 30, 1993·93 cites·36 claims
- 0292US4643466APipe joint assembly with snap ring and associated methodAMERICAN CAST IRON PIPE CO·Filed 1984·Granted Feb 17, 1987·81 cites·16 claims
- 0390US5067751AGasket for field adaptable push-on restrained joint and joint thus producedAMERICAN CAST IRON PIPE CO·Filed 1990·Granted Nov 26, 1991·138 cites·39 claims
- 0486US5480196ADuctile iron pipe joint employing a coupling and coupling thereforAMERICAN CAST IRON PIPE CO·Filed 1994·Granted Jan 2, 1996·70 cites·22 claims
- 0584US4685708AAxially restrained pipe joint with improved locking ring structureAMERICAN CAST IRON PIPE CO·Filed 1986·Granted Aug 11, 1987·55 cites·19 claims
- 0677US5993570ALinepipe and structural steel produced by high speed continuous castingAMERICAN CAST IRON PIPE CO·Filed 1997·Granted Nov 30, 1999·61 cites·23 claims
- 0773US4456288ASnap ring and restrained pipe joint using said snap-ringAMERICAN CAST IRON PIPE CO·Filed 1982·Granted Jun 26, 1984·36 cites·23 claims
- 0873US4254165AMethod of forming a filled polymer coating on an internal cylindrical surface and article produced therebyAMERICAN CAST IRON PIPE CO·Filed 1977·Granted Mar 3, 1981·26 cites·17 claims
- 0971US5277242APipe casting machine having improved pipe mold stabling ringsAMERICAN CAST IRON PIPE CO·Filed 1992·Granted Jan 11, 1994·20 cites·7 claims
- 1070US5738140AAdjustable height extension stem and valve box assemblyAMERICAN CAST IRON PIPE CO·Filed 1996·Granted Apr 14, 1998·37 cites·20 claims
- 1168US4402531AFire hydrant nozzle assemblyAMERICAN CAST IRON PIPE CO·Filed 1980·Granted Sep 6, 1983·33 cites·31 claims
- 1267US4524505AMethod of assembling a pipe jointAMERICAN CAST IRON PIPE CO·Filed 1983·Granted Jun 25, 1985·30 cites·14 claims
- 1367US4428604ARestrained pipe joint and associated snap-ringAMERICAN CAST IRON PIPE CO·Filed 1981·Granted Jan 31, 1984·31 cites·15 claims
- 1465US5520419AApparatus for assembling bell and spigot pipe jointsAMERICAN CAST IRON PIPE CO·Filed 1995·Granted May 28, 1996·25 cites·10 claims
- 1559US6490900B1Pipe gauging and rounding apparatus and methodAMERICAN CAST IRON PIPE CO·Filed 2000·Granted Dec 10, 2002·6 cites·19 claims
- 1658US4968002ABoltless bonnet assembly for gate valveAMERICAN CAST IRON PIPE CO·Filed 1989·Granted Nov 6, 1990·24 cites·25 claims
- 1753US4474134AMethod and apparatus for coating the interior surface of metal pipesAMERICAN CAST IRON PIPE CO·Filed 1984·Granted Oct 2, 1984·14 cites·8 claims
- 1852US4095643AAgent feeder for pipe casting apparatusAMERICAN CAST IRON PIPE CO·Filed 1974·Granted Jun 20, 1978·15 cites·9 claims
- 1946US4913089AConcrete injector pump and process for lining pipeAMERICAN CAST IRON PIPE CO·Filed 1988·Granted Apr 3, 1990·13 cites·15 claims
- 2042US5426842AMethod of assembling bell and spigot pipe jointsAMERICAN CAST IRON PIPE CO·Filed 1993·Granted Jun 27, 1995·13 cites·14 claims
- 2140US4830266AMethod of producing weld metal tubing empoying a reusable mandrelAMERICAN CAST IRON PIPE CO·Filed 1988·Granted May 16, 1989·7 cites·10 claims
- 2240US4327798AMethod of applying fluxAMERICAN CAST IRON PIPE CO·Filed 1980·Granted May 4, 1982·5 cites·24 claims
- 2339US4597995AHigh speed pipe lining method and apparatusAMERICAN CAST IRON PIPE CO·Filed 1985·Granted Jul 1, 1986·9 cites·25 claims
- 2439US4455329AMethod for coating the interior surface of metal pipesAMERICAN CAST IRON PIPE CO·Filed 1982·Granted Jun 19, 1984·6 cites·7 claims
- 2534US4987013AProcess for lining pipeAMERICAN CAST IRON PIPE CO·Filed 1990·Granted Jan 22, 1991·9 cites·5 claims
- 2625US5190093AMethod for casting iron pipeAMERICAN CAST IRON PIPE CO·Filed 1991·Granted Mar 2, 1993·1 cites·10 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →