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Inventor

CARDER CHARLES FREDERICK

US5 patents
⚠️ This page may combine multiple inventors who share the name “CARDER CHARLES FREDERICK”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

RINGGENBERG PAUL DAVID

3 patents
US8973663B2Mar 10, 2015

Pump through circulating and or safety circulating valve

RINGGENBERG PAUL DAVID2 citations58
US8662180B2Mar 4, 2014

Rotational test valve with tension reset

RINGGENBERG PAUL DAVID2 citations58
US8607875B2Dec 17, 2013

Rotational wellbore test valve

RINGGENBERG PAUL DAVID1 citations48

HALLIBURTON ENERGY SERVICES INC

2 patents
US9428990B2Aug 30, 2016

Rotational wellbore test valve

HALLIBURTON ENERGY SERVICES INC0 citations49
US9719325B2Aug 1, 2017

Downhole tool consistent fluid control

HALLIBURTON ENERGY SERVICES INC0 citations38