Assignee
LINDSEY COMPLETION SYSTEMS INC
US·12 granted patents·744 citations·filing 1988–1990
Technology mixE21B12
Top patents by PatentIndex Score
12 records- 0193US5048611APressure operated circulation valveLINDSEY COMPLETION SYSTEMS INC·Filed 1990·Granted Sep 17, 1991·186 cites·6 claims
- 0290US4880058AStage cementing valveLINDSEY COMPLETION SYSTEMS INC·Filed 1988·Granted Nov 14, 1989·102 cites·15 claims
- 0384US4862966ALiner hanger with collapsible ball valve seatLINDSEY COMPLETION SYSTEMS INC·Filed 1988·Granted Sep 5, 1989·75 cites·7 claims
- 0484US4828037ALiner hanger with retrievable ball valve seatLINDSEY COMPLETION SYSTEMS INC·Filed 1988·Granted May 9, 1989·75 cites·5 claims
- 0577US5048606ASetting tool for a liner hanger assemblyLINDSEY COMPLETION SYSTEMS INC·Filed 1990·Granted Sep 17, 1991·68 cites·23 claims
- 0668US4848462ARotatable liner hangerLINDSEY COMPLETION SYSTEMS INC·Filed 1988·Granted Jul 18, 1989·40 cites·4 claims
- 0765US4926938ARotatable liner hanger with multiple bearings and conesLINDSEY COMPLETION SYSTEMS INC·Filed 1989·Granted May 22, 1990·34 cites·14 claims
- 0862US5058672ALanding collar and float valve assemblyLINDSEY COMPLETION SYSTEMS INC·Filed 1990·Granted Oct 22, 1991·40 cites·15 claims
- 0962US5048612ADouble nut setting tool and linger hanger assemblyLINDSEY COMPLETION SYSTEMS INC·Filed 1990·Granted Sep 17, 1991·38 cites·22 claims
- 1055US5058671APipe insert assemblyLINDSEY COMPLETION SYSTEMS INC·Filed 1990·Granted Oct 22, 1991·30 cites·17 claims
- 1154US5074362AFinger nut setting tool and liner hanger assemblyLINDSEY COMPLETION SYSTEMS INC·Filed 1990·Granted Dec 24, 1991·28 cites·23 claims
- 1251US4898243ALiner and drill pipe assemblyLINDSEY COMPLETION SYSTEMS INC·Filed 1988·Granted Feb 6, 1990·28 cites·7 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →