Inventor · disambiguated record
John Keith Caulfield
Also filed as: CAULFIELD JOHN K · CAULFIELD JOHN KEITH
5 granted patents·28 citations·filing 1992–2018
77Inventor score
Technology areasE21B
Top patents by PatentIndex Score
5 records- 0182US8869899B2Method for pulling a crown plugCAULFIELD JOHN KEITH·Filed 2012·Granted Oct 28, 2014·9 cites·17 claims
- 0277US10036225B2Method and apparatus for pulling a crown plugTETRA TECH·Filed 2016·Granted Jul 31, 2018·2 cites·17 claims
- 0377US9291016B2Method for pulling a crown plug from a subsea treeTETRA TECH·Filed 2014·Granted Mar 22, 2016·4 cites·17 claims
- 0457US10626693B2Method for pulling a crown plugEPIC APPLIED TECH LLC·Filed 2018·Granted Apr 21, 2020·0 cites·17 claims
- 0535US5246075AGuide post latching mechanismNAT OILWELL·Filed 1992·Granted Sep 21, 1993·13 cites·13 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →