Inventor

Derrick W. Lewis

Inventor
Conroe, TX, US

Overview

13→
Patents
2005–2020
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 13 as inventor

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

E21Bprimary
E21BEarth or rock drilling86%
F16BDevices for fastening or securing constructional elements or machine parts together, e.g. nails, bolts, circlips, clamps, clips or wedges7%
G01VGeophysics7%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2005–2014Patents assigned to HALLIBURTON ENERGY SERV INC (2)· patent assignee history
2005Based in The Woodlands, TX, US· patent location history
2014–2017Patents assigned to LEWIS DERRICK W (5)· patent assignee history
2014–2016Patents assigned to CURTIS FREDRICK D (4)· patent assignee history
2014–2020Based in Conroe, TX, US· patent location history
2015–2020Patents assigned to HALLIBURTON ENERGY SERVICES INC (11)· patent assignee history
2016–2017Patents assigned to LOVORN JAMES R (2)· patent assignee history
2018Based in Houston, TX, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HALLIBURTON ENERGY SERVICES INC112015–2020
LEWIS DERRICK Wself52014–2017
CURTIS FREDRICK D42014–2016
HALLIBURTON ENERGY SERV INC22005–2014
LOVORN JAMES R22016–2017
Locations
LocationPatentsSpan
Conroe, Texas, US112014–2020
Houston, Texas, US12018
The Woodlands, Texas, US12005