Inventor

Carl M. Hoffmaster

Inventor

Houston, TX, US

Overview

1998–2020

Patent span

Fixed constructions

Primary field (CPC E)

Patents· 17 as inventor

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

E21Bprimary

E21BEarth or rock drilling100%

PatentTitleYear

10,570,664Wellbore reaming tool having shear cutters and gouging cutters2020 9,951,563Wellbore mill having shear cutters and gouging cutters2018 9,145,739'Fixed cutter drill bit for abrasive applications'2015 9,016,407'Drill bit cutting structure and methods to maximize depth-of-cut for weight on bit applied'2015 8,833,492'Cutters for fixed cutter bits'2014 8,783,387'Cutter geometry for high ROP applications'2014 8,689,908'Drill bit having enhanced stabilization features and method of use thereof'2014 8,127,863'Drill bit having enhanced stabilization features and method of use thereof'2012 8,100,202'Fixed cutter bit with backup cutter elements on secondary blades'2012 7,798,256'Fixed cutter drill bit for abrasive applications'2010 7,703,557'Fixed cutter bit with backup cutter elements on primary blades'2010 7,621,348'Drag bits with dropping tendencies and methods for making the same'2009 7,451,836'Advanced expandable reaming tool'2008 7,451,837'Advanced expandable reaming tool'2008 6,880,650'Advanced expandable reaming tool'2005 6,659,207'Bi-centered drill bit having enhanced casing drill-out capability and improved directional stability'2003 5,839,525'Directional drill bit'1998

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1998–2020Based in Houston, TX, US· patent location history

2003–2015Patents assigned to SMITH INTERNATIONAL (14)· patent assignee history

2012–2015Patents assigned to DURAIRAJAN BALA (6)· patent assignee history

2012–2015Patents assigned to HOFFMASTER CARL M (6)· patent assignee history

2012–2015Patents assigned to AZAR MICHAEL G (3)· patent assignee history

2012–2014Patents assigned to ARTEAGA ROLANDO DESCARPONTRIEZ (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SMITH INTERNATIONAL	14	2003–2015
DURAIRAJAN BALA	6	2012–2015
HOFFMASTER CARL Mself	6	2012–2015
AZAR MICHAEL G	3	2012–2015
ARTEAGA ROLANDO DESCARPONTRIEZ	2	2012–2014

Locations

Location	Patents	Span
Houston, Texas, US	17	1998–2020