LexDanaLexDanabeta
Inventor

Paul Donald Roberts

Inventor
Spring, TX, US

Overview

5→
Patents
1978–2019
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 5 as inventor

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

E21Bprimary
E21BEarth or rock drilling50%
B23KSoldering or unsoldering13%
F16DCouplings for transmitting rotation13%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests13%
Y10TTechnical subjects covered by former us classification13%
PatentTitleYear
10,267,366Universal joint for downhole motor drive20199,670,731'Adjustable bent housing for directional drill string'20176,328,119'Adjustable gauge downhole drilling assembly'20016,158,533'Adjustable gauge downhole drilling assembly'20004,075,453'Welding'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978–2019Patents assigned to ROBERTS PAUL DONALD (3)· patent assignee history
1978Based in Darlington, GB· patent location history
2000–2001Patents assigned to HALLIBURTON ENERGY SERV INC (2)· patent assignee history
2000–2001Based in Broussard, LA, US· patent location history
2017–2019Patents assigned to LAGRANGE TIMOTHY EDWARD (2)· patent assignee history
2017–2019Based in Spring, TX, US· patent location history
2019Patents assigned to TRUE NORTH TECH LLC (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
ROBERTS PAUL DONALDself31978–2019
HALLIBURTON ENERGY SERV INC22000–2001
LAGRANGE TIMOTHY EDWARD22017–2019
TRUE NORTH TECH LLC12019
Locations
LocationPatentsSpan
Spring, Texas, US22017–2019
Broussard, LA, US22000–2001
Darlington, GB11978