Inventor · disambiguated record

John C. Ratcliff

Also filed as: RATCLIFF JOHN C · RATCLIFF JOHN CAREY

2 granted patents·21 citations·filing 1998–1998

59Inventor score

Technology areasB23K E21B

Files withGAS RES INST1 SCHLUMBERGER TECHNOLOGY CORP1

Top patents by PatentIndex Score

2 records

0136US6119782AMethod and apparatus for anchoring a tool within a cased boreholeGAS RES INST·Filed 1998·Granted Sep 19, 2000·16 cites·20 claims
0227US5977509AMethod for full penetration electron beam weld for downhold toolsSCHLUMBERGER TECHNOLOGY CORP·Filed 1998·Granted Nov 2, 1999·5 cites·15 claims

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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →