Assignee
FLOWDRIL CORP
US·4 granted patents·324 citations·filing 1984–1996
Technology mixE21B4
Top patents by PatentIndex Score
4 records- 0191US5595252AFixed-cutter drill bit assembly and methodFLOWDRIL CORP·Filed 1994·Granted Jan 21, 1997·183 cites·57 claims
- 0281US4624327AMethod for combined jet and mechanical drillingFLOWDRIL CORP·Filed 1984·Granted Nov 25, 1986·81 cites·23 claims
- 0356US5787998ADown hole pressure intensifier and drilling assembly and methodFLOWDRIL CORP·Filed 1996·Granted Aug 4, 1998·39 cites·40 claims
- 0450US4691790AMethod and apparatus for removing the inner conduit from a dual passage drill stringFLOWDRIL CORP·Filed 1985·Granted Sep 8, 1987·21 cites·19 claims
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →