Inventor · disambiguated record
Johnny Castle
Also filed as: CASTLE JOHNNY · CASTLE JOHNNY N
2 granted patents·2 pending applications·174 citations·filing 1993–2006
69Inventor score
Technology areasE21B
Top patents by PatentIndex Score
4 records- 0186US5289889ARoller cone core bit with spiral stabilizersGEARHART MARVIN·Filed 1993·Granted Mar 1, 1994·158 cites·5 claims
- 0275US7140448B2Stepped polycrystalline diamond compact insertULTERRA DRILLING TECHNOLOGIES·Filed 2005·Granted Nov 28, 2006·16 cites·5 claims
- 0338US2006283640A1Stepped polycrystalline diamond compact insertESTES ROY·Filed 2006·Application pending·0 cites
- 0433US2006196699A1Modular kerfing drill bitESTES ROY·Filed 2005·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →