Inventor · disambiguated record
Preston R. Fox
Also filed as: FOX PRESTON · FOX PRESTON R
12 granted patents·403 citations·filing 1982–2016
92Inventor score
Top patents by PatentIndex Score
12 records- 0195US7188547B1Tubular connect/disconnect apparatusVARCO INT·Filed 2006·Granted Mar 13, 2007·69 cites·20 claims
- 0294US5451129APipe transfer systemVARCO INT·Filed 1993·Granted Sep 19, 1995·71 cites·41 claims
- 0392US7062991B1Tubular connect/disconnect apparatusVARCO INT·Filed 2005·Granted Jun 20, 2006·52 cites·20 claims
- 0490US7313986B2Tubular-drill bit connect/disconnect apparatusVARCO INT·Filed 2007·Granted Jan 1, 2008·36 cites·20 claims
- 0587US7165619B2Subsea intervention system, method and components thereofVARCO INT·Filed 2003·Granted Jan 23, 2007·109 cites·129 claims
- 0684US7748473B2Top drives with shaft multi-sealNAT OILWELL VARCO LP·Filed 2008·Granted Jul 6, 2010·26 cites·17 claims
- 0781US8752653B2Dual ball upper internal blow out preventer valveSENEVIRATNE PADMASIRI DAYA·Filed 2011·Granted Jun 17, 2014·11 cites·22 claims
- 0876US7401664B2Top drive systemsVARCO I P·Filed 2006·Granted Jul 22, 2008·16 cites·20 claims
- 0957US7748445B2Top drive with shaft seal isolationNAT OILWELL VARCO LP·Filed 2007·Granted Jul 6, 2010·6 cites·15 claims
- 1054US10081110B2Self-aligning pipe gripping assembly and method of making and using the sameNAT OILWELL VARCO LP·Filed 2016·Granted Sep 25, 2018·0 cites·20 claims
- 1151US9452535B2Self-aligning pipe gripping assembly and method of making and using the sameNAT OILWELL VARCO LP·Filed 2013·Granted Sep 27, 2016·0 cites·20 claims
- 1232US4478111ASuspension of adjustable pipe spinnerVARCO INT·Filed 1982·Granted Oct 23, 1984·7 cites·19 claims
Join the waitlist — get patent alerts
Get an alert when Preston R. Fox files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →