Inventor
James Ray Landrith, II
Inventor
Humble, TX, US
Overview
Patents· 5 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E21Bprimary
E21BEarth or rock drilling43%
F16KValves29%
F15BSystems acting by means of fluids in general14%
Y10TTechnical subjects covered by former us classification14%
PatentTitleYear
10,508,663Hydraulic circuit for controlling a movable component201910,337,638Slow-shift SPM valve20199,428,994'Blowout preventer monitor with trigger sensor and method of using same'20169,416,628'Blowout preventer activator and method of using same'20169,394,758'Sealable wellsite valve and method of using same'2016Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2016–2019Patents assigned to NAT OILWELL VARCO LP (5)· patent assignee history
2016–2019Based in Humble, TX, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| NAT OILWELL VARCO LP | 5 | 2016–2019 |
Locations
| Location | Patents | Span |
|---|---|---|
| Humble, Texas, US | 5 | 2016–2019 |