Assignee
NUMA TOOL CO
US·11 granted patents·1 pending application·413 citations·filing 1989–2019
Top patents by PatentIndex Score
12 records- 0196US4962822ADownhole drill bit and bit couplingNUMA TOOL CO·Filed 1989·Granted Oct 16, 1990·194 cites·19 claims
- 0291US4919221AImpact drill bit assembly and replaceable parts thereofNUMA TOOL CO·Filed 1989·Granted Apr 24, 1990·73 cites·22 claims
- 0380US6698537B2Bit retention systemNUMA TOOL CO·Filed 2001·Granted Mar 2, 2004·35 cites·19 claims
- 0455US6070678ABit retention systemNUMA TOOL CO·Filed 1998·Granted Jun 6, 2000·35 cites·17 claims
- 0552US5984021APorting system for back chamber of pneumatic hammerNUMA TOOL CO·Filed 1998·Granted Nov 16, 1999·33 cites·8 claims
- 0648US6883618B1Variable timing for front chamber of pneumatic hammerNUMA TOOL CO·Filed 2004·Granted Apr 26, 2005·12 cites·17 claims
- 0748US6021856ABit retention systemNUMA TOOL CO·Filed 1998·Granted Feb 8, 2000·25 cites·25 claims
- 0841US7422074B2Delayed compression sleeve hammerNUMA TOOL CO·Filed 2006·Granted Sep 9, 2008·2 cites·8 claims
- 0935US11085242B2Pneumatic drilling with packer slideable along stem drill rodNUMA TOOL CO·Filed 2019·Granted Aug 10, 2021·0 cites·20 claims
- 1029US5992537ABack end connection in a downhole drillNUMA TOOL CO·Filed 1998·Granted Nov 30, 1999·4 cites·10 claims
- 1123US2005072602A1Integral bit retention systemNUMA TOOL CO·Filed 2003·Application pending·0 cites
- 1222US10612310B2Locking bit retention systemNUMA TOOL CO·Filed 2017·Granted Apr 7, 2020·0 cites·16 claims
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