Inventor

Daniel E. Ruff

Inventor

Kingwood, TX, US

Overview

2000–2019

Patent span

Fixed constructions

Primary field (CPC E)

Patents· 15 as inventor

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

E21Bprimary

E21BEarth or rock drilling75%

B23KSoldering or unsoldering20%

C22CAlloys5%

PatentTitleYear

10,508,323Method and apparatus for securing bodies using shape memory materials2019 8,172,008'Drilling apparatus with reduced exposure of cutters and methods of drilling'2012 8,066,084'Drilling apparatus with reduced exposure of cutters and methods of drilling'2011 7,861,806'Shank structure for rotary drill bits'2011 7,814,990'Drilling apparatus with reduced exposure of cutters and methods of drilling'2010 7,600,589'Rotary drill bits'2009 7,594,454'Methods of fabricating rotary drill bits'2009 7,472,764'Rotary drill bit shank, rotary drill bits so equipped, and methods of manufacture'2009 7,096,978'Drill bits with reduced exposure of cutters'2006 7,066,280'Method and apparatus for monitoring and recording of the operating condition of a downhole drill bit during drilling operations'2006 6,935,441'Drill bits with reduced exposure of cutters'2005 6,779,613'Drill bits with controlled exposure of cutters'2004 6,571,886'Method and apparatus for monitoring and recording of the operating condition of a downhole drill bit during drilling operations'2003 6,460,631'Drill bits with reduced exposure of cutters'2002 6,098,728'Rock bit nozzle arrangement'2000

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2000–2012Patents assigned to BAKER HUGHES INC (14)· patent assignee history

2000–2012Based in Kingwood, TX, US· patent location history

2011–2012Patents assigned to BEUERSHAUSEN CHRISTOPHER C (2)· patent assignee history

2011–2012Patents assigned to DOSTER MICHAEL L (2)· patent assignee history

2011–2012Patents assigned to DYKSTRA MARK W (2)· patent assignee history

2011–2012Patents assigned to HEUSER WILLIAM (2)· patent assignee history

2019Based in Montgomery, TX, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
BAKER HUGHES INC	14	2000–2012
BEUERSHAUSEN CHRISTOPHER C	2	2011–2012
DOSTER MICHAEL L	2	2011–2012
DYKSTRA MARK W	2	2011–2012
HEUSER WILLIAM	2	2011–2012

Locations

Location	Patents	Span
Kingwood, Texas, US	14	2000–2012
Montgomery, Texas, US	1	2019