Assignee
HYDROTECH INT INC
21 granted patents·887 citations·filing 1974–1978
Top patents by PatentIndex Score
21 records- 0198US4045054AApparatus for rigidly interconnecting misaligned pipe endsHYDROTECH INT INC·Filed 1975·Granted Aug 30, 1977·149 cites·19 claims
- 0292US4076130AApparatus for mounting a coupling member over a pipe end in a subsea locationHYDROTECH INT INC·Filed 1976·Granted Feb 28, 1978·56 cites·4 claims
- 0391US4116015AMethod and apparatus for remotely attaching a riser pipe to an offshore structureHYDROTECH INT INC·Filed 1977·Granted Sep 26, 1978·54 cites·2 claims
- 0490US3944263ADynamic pipe couplingHYDROTECH INT INC·Filed 1975·Granted Mar 16, 1976·65 cites·8 claims
- 0589US3933519ASub-sea pipe cleaning apparatus and methodHYDROTECH INT INC·Filed 1974·Granted Jan 20, 1976·63 cites·15 claims
- 0685US4091514ASubsea machine toolHYDROTECH INT INC·Filed 1976·Granted May 30, 1978·70 cites·6 claims
- 0783US3978678AMethod and apparatus for plugging a pipelineHYDROTECH INT INC·Filed 1975·Granted Sep 7, 1976·49 cites·17 claims
- 0882US4028903AMethod and apparatus for maneuvering pipe ends in a subsea locationHYDROTECH INT INC·Filed 1975·Granted Jun 14, 1977·46 cites·10 claims
- 0981US4059288APressure balanced safety pipeline connectorHYDROTECH INT INC·Filed 1976·Granted Nov 22, 1977·56 cites·4 claims
- 1080US3997197ABall and socket pipe couplingHYDROTECH INT INC·Filed 1974·Granted Dec 14, 1976·32 cites·9 claims
- 1175US4006921APipe couplingHYDROTECH INT INC·Filed 1975·Granted Feb 8, 1977·30 cites·12 claims
- 1273US4078832APipe coupling with improved seal meansHYDROTECH INT INC·Filed 1976·Granted Mar 14, 1978·33 cites·4 claims
- 1371US4044749AConcrete removal toolHYDROTECH INT INC·Filed 1976·Granted Aug 30, 1977·22 cites·19 claims
- 1470US3931670AApparatus and method for connecting two axially spaced apart pipesHYDROTECH INT INC·Filed 1974·Granted Jan 13, 1976·22 cites·16 claims
- 1569US3986728APipe couplingHYDROTECH INT INC·Filed 1974·Granted Oct 19, 1976·23 cites·11 claims
- 1664US4089455AApparatus and method for connecting pipes by weldingHYDROTECH INT INC·Filed 1977·Granted May 16, 1978·33 cites·4 claims
- 1761US4005881ARing set ball couplingHYDROTECH INT INC·Filed 1975·Granted Feb 1, 1977·24 cites·16 claims
- 1860US3997199APipe couplingHYDROTECH INT INC·Filed 1975·Granted Dec 14, 1976·22 cites·1 claims
- 1958US3977702APipe coupling with retrievable setting meansHYDROTECH INT INC·Filed 1975·Granted Aug 31, 1976·20 cites·9 claims
- 2056US4209270APipe connector apparatus and methodHYDROTECH INT INC·Filed 1978·Granted Jun 24, 1980·14 cites·3 claims
- 2131US4116471AQuick operating connector for pipes or the likeHYDROTECH INT INC·Filed 1977·Granted Sep 26, 1978·4 cites·11 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →