Inventor · disambiguated record
William C. Shafer
Also filed as: SHAFER WILLIAM C
5 granted patents·256 citations·filing 1998–2002
84Inventor score
Technology areasE21B
Files withOIL & GAS RENTAL SERVICES INC5
Top patents by PatentIndex Score
5 records- 0192US6349764B1Drilling rig, pipe and support apparatusOIL & GAS RENTAL SERVICES INC·Filed 2000·Granted Feb 26, 2002·155 cites·39 claims
- 0272US6644413B2Method of landing items at a well locationOIL & GAS RENTAL SERVICES INC·Filed 2002·Granted Nov 11, 2003·43 cites·77 claims
- 0364US6378614B1Method of landing items at a well locationOIL & GAS RENTAL SERVICES INC·Filed 2000·Granted Apr 30, 2002·31 cites·62 claims
- 0453US6364012B1Drill pipe handling apparatusOIL & GAS RENTAL SERVICES INC·Filed 2000·Granted Apr 2, 2002·18 cites·42 claims
- 0531US6148924AMethod and apparatus for the disassembly of drill pipeOIL & GAS RENTAL SERVICES INC·Filed 1998·Granted Nov 21, 2000·9 cites·16 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →