Inventor · disambiguated record
John L. Land
Also filed as: LAND JOHN L
4 granted patents·150 citations·filing 1988–1994
81Inventor score
Technology areasE21B
Top patents by PatentIndex Score
4 records- 0165US5139090ATubing rotator with downhole tubing swivelLAND JOHN L·Filed 1991·Granted Aug 18, 1992·50 cites·15 claims
- 0257US5431230ASlant wellbore tubing anchor catcher with rotating mandrelROTATING PRODUCTION SYSTEMS IN·Filed 1994·Granted Jul 11, 1995·35 cites·14 claims
- 0356US5327975ATubing anchor catcher with rotating mandrelROTATING PRODUCTION SYSTEMS IN·Filed 1992·Granted Jul 12, 1994·37 cites·18 claims
- 0453US4860826AApparatus for sealing a tubing string in a high pressure wellboreLAND JOHN L·Filed 1988·Granted Aug 29, 1989·28 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →