Assignee
CANADIAN DOWNHOLE DRILL SYSTEM
CA·12 granted patents·463 citations·filing 1989–2001
Top patents by PatentIndex Score
12 records- 0186US5000723AUniversal joint for downhole motorsCANADIAN DOWNHOLE DRILL SYSTEM·Filed 1989·Granted Mar 19, 1991·67 cites·5 claims
- 0282US6378630B1Locking swivel deviceCANADIAN DOWNHOLE DRILL SYSTEM·Filed 1999·Granted Apr 30, 2002·142 cites·27 claims
- 0375US5248204AShort stack bearing assemblyCANADIAN DOWNHOLE DRILL SYSTEM·Filed 1992·Granted Sep 28, 1993·68 cites·18 claims
- 0473US6595303B2Rotary steerable drilling toolCANADIAN DOWNHOLE DRILL SYSTEM·Filed 2001·Granted Jul 22, 2003·42 cites·14 claims
- 0548US6145602ADownhole tool catcher and methodCANADIAN DOWNHOLE DRILL SYSTEM·Filed 1999·Granted Nov 14, 2000·25 cites·3 claims
- 0645US6263986B1Hydraulic drilling jarCANADIAN DOWNHOLE DRILL SYSTEM·Filed 2000·Granted Jul 24, 2001·18 cites·8 claims
- 0745US5495901ASurface adjustable adjustable bent housingCANADIAN DOWNHOLE DRILL SYSTEM·Filed 1995·Granted Mar 5, 1996·25 cites·7 claims
- 0842US6073707ADownhole sub with kick pad for directional drillingCANADIAN DOWNHOLE DRILL SYSTEM·Filed 1998·Granted Jun 13, 2000·20 cites·2 claims
- 0941US6302198B1One trip milling systemCANADIAN DOWNHOLE DRILL SYSTEM·Filed 1999·Granted Oct 16, 2001·22 cites·13 claims
- 1035US5638910ADownhole sub for directional drillingCANADIAN DOWNHOLE DRILL SYSTEM·Filed 1995·Granted Jun 17, 1997·14 cites·4 claims
- 1132US5664891ADownhole bearing assembly which accommodates compressive and tensile axialCANADIAN DOWNHOLE DRILL SYSTEM·Filed 1996·Granted Sep 9, 1997·13 cites·17 claims
- 1226US5971078AMethod and apparatus for retrieving downhole toolsCANADIAN DOWNHOLE DRILL SYSTEM·Filed 1997·Granted Oct 26, 1999·7 cites·20 claims
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