Assignee
BOART LONGYEAR INT HOLDING INC
US·9 granted patents·581 citations·filing 1996–2001
Top patents by PatentIndex Score
9 records- 0192US5788401ARod jointBOART LONGYEAR INT HOLDING INC·Filed 1996·Granted Aug 4, 1998·87 cites·14 claims
- 0289US6425449B1Up-hole pump-in core barrel apparatusBOART LONGYEAR INT HOLDING INC·Filed 2001·Granted Jul 30, 2002·101 cites·21 claims
- 0380US6089335APositive latch core barrel apparatusBOART LONGYEAR INT HOLDING INC·Filed 1998·Granted Jul 18, 2000·94 cites·20 claims
- 0478US5934393ACore barrel apparatusBOART LONGYEAR INT HOLDING INC·Filed 1997·Granted Aug 10, 1999·81 cites·26 claims
- 0573US6029758ARetractable core barrel valving apparatusBOART LONGYEAR INT HOLDING INC·Filed 1997·Granted Feb 29, 2000·89 cites·24 claims
- 0668US6564885B2Up-hole overshot and safety drilling apparatusBOART LONGYEAR INT HOLDING INC·Filed 2001·Granted May 20, 2003·56 cites·24 claims
- 0767US6719303B2Drill string chuckBOART LONGYEAR INT HOLDING INC·Filed 2001·Granted Apr 13, 2004·16 cites·23 claims
- 0866US6371205B1Bore hole grouting apparatus and methodBOART LONGYEAR INT HOLDING INC·Filed 2000·Granted Apr 16, 2002·41 cites·11 claims
- 0939US6109373ACable overshot apparatusBOART LONGYEAR INT HOLDING INC·Filed 1998·Granted Aug 29, 2000·16 cites·14 claims
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