Assignee
INTERPROVINCIAL PIPE LINE COMP
CA·4 granted patents·94 citations·filing 1988–1990
Top patents by PatentIndex Score
4 records- 0187US4875615AVapor plug for temporarily sealing or plugging a pipelineINTERPROVINCIAL PIPE LINE COMP·Filed 1989·Granted Oct 24, 1989·51 cites·4 claims
- 0260US5012842AFluid actuated pipe clamp tightenerINTERPROVINCIAL PIPE LINE COMP·Filed 1990·Granted May 7, 1991·26 cites·2 claims
- 0349US5186214ATemporary disintegratable plug for an open-ended oil pipelineINTERPROVINCIAL PIPE LINE COMP·Filed 1990·Granted Feb 16, 1993·17 cites·2 claims
- 0429US4885044AMethod of controlling hardness of pipe weld-joints by radially inserting insulating rings prior to tempering heat-treatmentINTERPROVINCIAL PIPE LINE COMP·Filed 1988·Granted Dec 5, 1989·0 cites·3 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →