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Inventor

John F. Bradford

Inventor
The Woodlands, TX, US

Overview

13→
Patents
2009–2019
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 drilling60%
F16CShafts10%
Y10TTechnical subjects covered by former us classification10%
B23KSoldering or unsoldering5%
C21DModifying the physical structure of ferrous metals5%
C22CAlloys5%
C23CCoating metallic material5%
PatentTitleYear
10,190,366Hybrid drill bits having increased drilling efficiency201910,072,462Hybrid drill bits20189,782,857'Hybrid drill bit having increased service life'20179,657,527'Drill bits with anti-tracking features'20179,353,575'Hybrid drill bits having increased drilling efficiency'20169,290,997'Downhole tools including bearings and methods of forming same'20168,950,514'Drill bits with anti-tracking features'20158,834,026'Bearings for downhole tools, downhole tools incorporating such bearings, and methods of cooling such bearings'20148,240,399'Drill bit with an adjustable steering device'20128,087,479'Drill bit with an adjustable steering device'20127,905,301'Earth boring drill bits made from a low-carbon, high-molybdenum alloy'20117,823,664'Corrosion protection for head section of earth boring bit'20107,484,577'Bit leg outer surface hardfacing on earth-boring bit'2009

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2009–2019Patents assigned to BAKER HUGHES INC (13)· patent assignee history
2009–2011Based in Katy, TX, US· patent location history
2010–2012Based in Fort Worth, TX, US· patent location history
2012–2015Patents assigned to BRADFORD JOHN F (4)· patent assignee history
2012Patents assigned to KULKARNI AJAY V (2)· patent assignee history
2012Patents assigned to LUCE DAVID K (2)· patent assignee history
2014–2019Based in The Woodlands, TX, US· patent location history
2015Patents assigned to BUSKE ROBERT J (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
BAKER HUGHES INC132009–2019
BRADFORD JOHN Fself42012–2015
KULKARNI AJAY V22012
LUCE DAVID K22012
BUSKE ROBERT J12015
Locations
LocationPatentsSpan
The Woodlands, Texas, US82014–2019
Fort Worth, Texas, US32010–2012
Katy, Texas, US22009–2011