P

Inventor

JOHNSON CHRISTOPHER DALE

US12 patents
⚠️ This page may combine multiple inventors who share the name “JOHNSON CHRISTOPHER DALE”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SPRINGETT FRANK BENJAMIN

5 patents
US8424607B2Apr 23, 2013

System and method for severing a tubular

SPRINGETT FRANK BENJAMIN26 citations89
US9022104B2May 5, 2015

Blowout preventer blade assembly and method of using same

SPRINGETT FRANK BENJAMIN11 citations82
US8807219B2Aug 19, 2014

Blowout preventer blade assembly and method of using same

SPRINGETT FRANK BENJAMIN13 citations82
US8720565B2May 13, 2014

Tubular severing system and method of using same

SPRINGETT FRANK BENJAMIN13 citations82
US8720564B2May 13, 2014

Tubular severing system and method of using same

SPRINGETT FRANK BENJAMIN18 citations82

NAT OILWELL VARCO LP

3 patents
US9580987B2Feb 28, 2017

Spherical blowout preventer with energizeable packer seal and method of using same

NAT OILWELL VARCO LP4 citations71
US9708877B2Jul 18, 2017

Blowout preventer monitoring system and method of using same

NAT OILWELL VARCO LP0 citations50
US9428994B2Aug 30, 2016

Blowout preventer monitor with trigger sensor and method of using same

NAT OILWELL VARCO LP1 citations46

JOHNSON CHRISTOPHER DALE

2 patents
US9068423B2Jun 30, 2015

Wellhead connector and method of using same

JOHNSON CHRISTOPHER DALE3 citations58
US8948858B2Feb 3, 2015

Method and apparatus for identifying potentially misclassified arrhythmic episodes

JOHNSON CHRISTOPHER DALE0 citations47

CARDIAC PACEMAKERS INC

1 patent
US7738950B2Jun 15, 2010

Method and apparatus for identifying potentially misclassified arrhythmic episodes

CARDIAC PACEMAKERS INC20 citations91

LIOTTA JOSEPH JAMES

1 patent
US8978698B2Mar 17, 2015

Blowout preventer monitoring system and method of using same

LIOTTA JOSEPH JAMES6 citations77