Assignee
OBRIEN GOINS SIMPSON & ASS
US·3 granted patents·252 citations·filing 1983–1993
Top patents by PatentIndex Score
3 records- 0192US4508628AFast drilling invert emulsion drilling fluidsOBRIEN GOINS SIMPSON & ASS·Filed 1983·Granted Apr 2, 1985·189 cites·8 claims
- 0283US5403820AEnvironmentally safe water base drilling fluidOBRIEN GOINS SIMPSON & ASS·Filed 1992·Granted Apr 4, 1995·43 cites·13 claims
- 0367US5710107AEnvironmentally safe drilling fluidOBRIEN GOINS SIMPSON & ASS·Filed 1993·Granted Jan 20, 1998·20 cites·26 claims
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