Inventor · disambiguated record

Jack Castle

Also filed as: CASTLE JACK

2 granted patents·234 citations·filing 1991–2003

72Inventor score

Technology areasE21B

Files withEXXON PRODUCTION RESEARCH CO1 ROCK BIT L P1

Top patents by PatentIndex Score

2 records

0190US6904984B1Stepped polycrystalline diamond compact insertROCK BIT L P·Filed 2003·Granted Jun 14, 2005·113 cites·5 claims
0284US5145017AKerf-cutting apparatus for increased drilling ratesEXXON PRODUCTION RESEARCH CO·Filed 1991·Granted Sep 8, 1992·121 cites·14 claims

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