Assignee
WEATHERFORD OIL TOOL
DE·6 granted patents·270 citations·filing 1975–1987
Top patents by PatentIndex Score
6 records- 0196US4492134AApparatus for screwing pipes togetherWEATHERFORD OIL TOOL·Filed 1982·Granted Jan 8, 1985·134 cites·7 claims
- 0275US4876884AApparatus for testing the gas-tightness of joints between hollow bodiesWEATHERFORD OIL TOOL·Filed 1987·Granted Oct 31, 1989·31 cites·6 claims
- 0375US4739681AMachine for making up and breaking out pipe jointsWEATHERFORD OIL TOOL·Filed 1986·Granted Apr 26, 1988·48 cites·18 claims
- 0455US4042022ADevices for centralizing pipes in boringsWEATHERFORD OIL TOOL·Filed 1975·Granted Aug 16, 1977·27 cites·9 claims
- 0554US4753108AApparatus for testing connections between pieces of piping for impermeability to gasesWEATHERFORD OIL TOOL·Filed 1987·Granted Jun 28, 1988·17 cites·10 claims
- 0642US4199866ADental amalgamation apparatusWEATHERFORD OIL TOOL·Filed 1977·Granted Apr 29, 1980·13 cites·11 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →