LexDanaLexDanabeta
Inventor

David W. McCulloch

Inventor
Arlington, TX, US

Overview

10→
Patents
2006–2017
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 10 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

E21Bprimary
E21BEarth or rock drilling64%
B62DMotor vehicles7%
B66CCranes7%
B66DCapstans7%
F15BSystems acting by means of fluids in general7%
G01LMeasuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure7%
PatentTitleYear
9,581,009'Coiled tubing injector with load sensing tubing guide'20179,458,682'Coiled tubing injector with limited slip chains'20169,353,593'Handler for blowout preventer assembly'20169,316,067'Coiled tubing injector handler'20169,151,122'Coiled tubing injector with limited slip chains'20158,727,018'Charging unit, system and method for activating a wellsite component'20148,701,754'Coiled tubing injector with strain relief'20148,544,536'Coiled tubing injector with limited slip chains'20137,240,726'Elevating operator cabin for coiled tubing injector'20077,077,209'Mast for handling a coiled tubing injector'2006

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2006–2017Based in Arlington, TX, US· patent location history
2007Patents assigned to VARCO INT (1)· patent assignee history
2013–2017Patents assigned to NAT OILWELL VARCO LP (8)· patent assignee history
2013–2014Patents assigned to MCCULLOCH DAVID W (2)· patent assignee history
2013Patents assigned to STEFFENHAGEN TIMOTHY S (1)· patent assignee history
2013Patents assigned to STEWART WILLIAM G (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NAT OILWELL VARCO LP82013–2017
MCCULLOCH DAVID Wself22013–2014
STEFFENHAGEN TIMOTHY S12013
STEWART WILLIAM G12013
VARCO INT12007
Locations
LocationPatentsSpan
Arlington, Texas, US102006–2017