Assignee
RINGGENBERG PAUL DAVID
US·4 granted patents·9 citations·filing 2010–2011
Top patents by PatentIndex Score
4 records- 0174US8727315B2Ball valveRINGGENBERG PAUL DAVID·Filed 2011·Granted May 20, 2014·4 cites·20 claims
- 0260US8662180B2Rotational test valve with tension resetRINGGENBERG PAUL DAVID·Filed 2011·Granted Mar 4, 2014·2 cites·16 claims
- 0358US8973663B2Pump through circulating and or safety circulating valveRINGGENBERG PAUL DAVID·Filed 2010·Granted Mar 10, 2015·2 cites·19 claims
- 0455US8607875B2Rotational wellbore test valveRINGGENBERG PAUL DAVID·Filed 2011·Granted Dec 17, 2013·1 cites·10 claims
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