Inventor · disambiguated record
Charles M. Helms
Also filed as: HELMS CHARLES M
7 granted patents·382 citations·filing 1993–2004
88Inventor score
Technology areasE21B
Top patents by PatentIndex Score
7 records- 0186US6244345B1Lockable swivel apparatus and methodSPECIALTY RENTAL TOOL & SUPPLY·Filed 1997·Granted Jun 12, 2001·115 cites·21 claims
- 0286US5284210ATop entry sub arrangementHELMS CHARLES M·Filed 1993·Granted Feb 8, 1994·126 cites·17 claims
- 0382US5735351ATop entry apparatus and method for a drilling assemblyFiled 1995·Granted Apr 7, 1998·103 cites·55 claims
- 0450US7131497B2Articulated drillstring entry apparatus and methodSPECIALTY RENTAL TOOLS & SUPPL·Filed 2004·Granted Nov 7, 2006·17 cites·56 claims
- 0542USRE39509ETop entry sub arrangementSPECIALTY RENTAL TOOLS & SUPPL·Filed 2002·Granted Mar 13, 2007·8 cites·36 claims
- 0637US7100699B2High tensile loading top entry sub and methodSPECIALTY RENTAL TOOLS & SUPPL·Filed 2002·Granted Sep 5, 2006·4 cites·21 claims
- 0732USRE41759ELockable swivel apparatus and methodHELMS CHARLES M·Filed 1997·Granted Sep 28, 2010·9 cites·58 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →