Assignee
PRIDECO INC
US·6 granted patents·297 citations·filing 1991–1994
Top patents by PatentIndex Score
6 records- 0187US5165491AMethod of horizontal drillingPRIDECO INC·Filed 1991·Granted Nov 24, 1992·117 cites·2 claims
- 0279US5184495AMethod of internally and externally upsetting the end of a metal tubePRIDECO INC·Filed 1991·Granted Feb 9, 1993·72 cites·3 claims
- 0371US5286069AStress relief groove for drill pipePRIDECO INC·Filed 1992·Granted Feb 15, 1994·36 cites·11 claims
- 0457US5148876ALightweight drill pipePRIDECO INC·Filed 1991·Granted Sep 22, 1992·31 cites·6 claims
- 0554US5358285AStress relief groove for drill pipePRIDECO INC·Filed 1994·Granted Oct 25, 1994·27 cites·13 claims
- 0645US5479721AMethod and apparatus for measuring the length (MIU) of the internal taper of an internally upset drill pipe tubePRIDECO INC·Filed 1994·Granted Jan 2, 1996·14 cites·6 claims
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →