Assignee
INT PIPE MACHINERY CORP
US·12 granted patents·156 citations·filing 1982–1994
Top patents by PatentIndex Score
12 records- 0183US5028368AMethod of forming lined pipeINT PIPE MACHINERY CORP·Filed 1989·Granted Jul 2, 1991·46 cites·17 claims
- 0264US5080571APackerhead assemblyINT PIPE MACHINERY CORP·Filed 1990·Granted Jan 14, 1992·20 cites·4 claims
- 0362US4540539AMethod and apparatus for production of concrete pipe by the packerhead methodINT PIPE MACHINERY CORP·Filed 1982·Granted Sep 10, 1985·21 cites·8 claims
- 0453US5147196AMachine for making concrete pipesINT PIPE MACHINERY CORP·Filed 1989·Granted Sep 15, 1992·16 cites·31 claims
- 0546US5139404AApparatus for making lined pipeINT PIPE MACHINERY CORP·Filed 1991·Granted Aug 18, 1992·9 cites·11 claims
- 0641US5364578ACombination counter rotating packerhead and vibrator assembly and method of operation thereofINT PIPE MACHINERY CORP·Filed 1992·Granted Nov 15, 1994·10 cites·18 claims
- 0739US5167967AMachine for making concrete pipesINT PIPE MACHINERY CORP·Filed 1991·Granted Dec 1, 1992·7 cites·13 claims
- 0837US4861252AVibrator type concrete pipe making machines having combined lubrication and cooling systemINT PIPE MACHINERY CORP·Filed 1988·Granted Aug 29, 1989·7 cites·3 claims
- 0934US5236322ACage positionerINT PIPE MACHINERY CORP·Filed 1991·Granted Aug 17, 1993·7 cites·28 claims
- 1032US5433523AVibratorsINT PIPE MACHINERY CORP·Filed 1994·Granted Jul 18, 1995·5 cites·11 claims
- 1132US5229024AApparatus for making concrete pipeINT PIPE MACHINERY CORP·Filed 1991·Granted Jul 20, 1993·6 cites·5 claims
- 1226US5215604ALong-wear packerhead segmentINT PIPE MACHINERY CORP·Filed 1990·Granted Jun 1, 1993·2 cites·2 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →