LexDanaLexDanabeta
Inventor

Guy Lefort

Inventor
Grand Prairie, TX, US

Overview

4→
Patents
2001–2019
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 4 as inventor

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

E21Bprimary
E21BEarth or rock drilling57%
F16JPistons29%
G06FElectric digital data processing14%
PatentTitleYear
10,214,966Rotary drill bits with back-up cutting elements to optimize bit life20199,677,341'Drill bit with extended life seal'20176,752,223'Roller cone bit with improved seal gland design'20046,279,671'Roller cone bit with improved seal gland design'2001

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2001–2004Based in Grand Prairie, TX, US· patent location history
2017–2019Patents assigned to HALLIBURTON ENERGY SERVICES INC (2)· patent assignee history
2017–2019Patents assigned to LEFORT GUY (2)· patent assignee history
2017Patents assigned to ANDERLE SETH G (1)· patent assignee history
2017Based in The Woodlands, TX, US· patent location history
2019Patents assigned to ARFELE ROBERT W (1)· patent assignee history
2019Patents assigned to ASHBY JAMES R (1)· patent assignee history
2019Based in Canonsburg, PA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HALLIBURTON ENERGY SERVICES INC22017–2019
LEFORT GUYself22017–2019
ANDERLE SETH G12017
ARFELE ROBERT W12019
ASHBY JAMES R12019
Locations
LocationPatentsSpan
Grand Prairie, Texas, US22001–2004
Canonsburg, Pennsylvania, US12019
The Woodlands, Texas, US12017