Assignee
TOA GROUT KOGYO CO
JP·6 granted patents·138 citations·filing 1980–1991
Top patents by PatentIndex Score
6 records- 0174US5035539ALiner for pipeline repair and method for repairing pipelinesTOA GROUT KOGYO CO·Filed 1990·Granted Jul 30, 1991·46 cites·19 claims
- 0263US4514112AMethod for injecting grouting agent and apparatus for conducting the methodTOA GROUT KOGYO CO·Filed 1984·Granted Apr 30, 1985·24 cites·6 claims
- 0359US4545702ABoring-injection device, method for improving ground by means of the device and method for investigating ground state by means of the deviceTOA GROUT KOGYO CO·Filed 1983·Granted Oct 8, 1985·29 cites·19 claims
- 0448US5224742AMethod for cutting off water in pipeline and structure of connection portion in pipelineTOA GROUT KOGYO CO·Filed 1991·Granted Jul 6, 1993·15 cites·9 claims
- 0538US5096332AMethod for water leakage prevention in pipeline and liner for water leakage preventionTOA GROUT KOGYO CO·Filed 1990·Granted Mar 17, 1992·15 cites·7 claims
- 0636US4403891AStabilizer for excavated surfaceTOA GROUT KOGYO CO·Filed 1980·Granted Sep 13, 1983·9 cites·1 claims
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