LexDanaLexDanabeta
Inventor

Mark P. Blackman

Inventor
Lewisville, TX, US

Overview

10→
Patents
1995–2017
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 drilling77%
F16JPistons15%
B23KSoldering or unsoldering8%
PatentTitleYear
9,782,857'Hybrid drill bit having increased service life'20177,543,660'Roller cone drill bit with debris diverter plugs'20097,484,572'Roller cone drill bit with debris flow paths through associated support arms'20096,802,380'Pressure relief system and methods of use and making'20046,752,223'Roller cone bit with improved seal gland design'20046,279,671'Roller cone bit with improved seal gland design'20015,644,956'Rotary drill bit with improved cutter and method of manufacturing same'19975,518,077'Rotary drill bit with improved cutter and seal protection'19965,452,771'Rotary drill bit with improved cutter and seal protection'19955,429,200'Rotary drill bit with improved cutter'1995

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1995–1997Patents assigned to DRESSER IND (4)· patent assignee history
1995–2004Based in Lewisville, TX, US· patent location history
2004–2009Patents assigned to HALLIBURTON ENERGY SERV INC (4)· patent assignee history
2009Based in Conroe, TX, US· patent location history
2017Patents assigned to BAKER HUGHES INC (1)· patent assignee history
2017Based in Spring, TX, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
DRESSER IND41995–1997
HALLIBURTON ENERGY SERV INC42004–2009
BAKER HUGHES INC12017
Locations
LocationPatentsSpan
Lewisville, Texas, US71995–2004
Conroe, Texas, US22009
Spring, Texas, US12017