Inventor · disambiguated record
Douglas Allen Schafer
Also filed as: SCHAFER DOUGLAS ALLEN
2 granted patents·10 citations·filing 2012–2013
56Inventor score
Technology areasE21B
Top patents by PatentIndex Score
2 records- 0178US9297232B2Reclosable multi zone isolation tool and method for use thereofHALLIBURTON ENERGY SERVICES INC·Filed 2013·Granted Mar 29, 2016·6 cites·17 claims
- 0266US8757275B2Reclosable multi zone isolation tool and method for use thereofSCOTT KEITH WAYNE·Filed 2012·Granted Jun 24, 2014·4 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →