Chris Edward Cawthorne

Person

The Woodlands, TX, US

People

Patents Grantslast 30 patents

Information Patent Grant
Shaped inserts with increased retention force
- Patent number 7,416,035
- Issue date Aug 26, 2008
- Smith International, Inc.
- Ramamurthy Viswanadham
- E21 - EARTH DRILLING MINING
Information Patent Grant
Bearing and lubrication system for earth boring bit
- Patent number 7,237,627
- Issue date Jul 3, 2007
- Smith International, Inc.
- Lance T. Richman
- E21 - EARTH DRILLING MINING
Information Patent Grant
Rock bit seal with extrusion prevention member
- Patent number 6,820,704
- Issue date Nov 23, 2004
- Smith International, Inc.
- Nephi Mourik
- E21 - EARTH DRILLING MINING
Information Patent Grant
Cutter element with non-linear, expanded crest
- Patent number 6,782,959
- Issue date Aug 31, 2004
- Smith International, Inc.
- James C. Minikus
- E21 - EARTH DRILLING MINING
Information Patent Grant
Dual-seal drill bit pressure communication system
- Patent number 6,695,079
- Issue date Feb 24, 2004
- Smith International, Inc.
- Gary Ray Portwood
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Dual-seal drill bit pressure communication system
- Patent number 6,679,342
- Issue date Jan 20, 2004
- Smith International, Inc.
- Gary Ray Portwood
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Roller cone bits with wear and fracture resistant surface
- Patent number 6,615,935
- Issue date Sep 9, 2003
- Smith International, Inc.
- Zhigang Fang
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Directional flow nozzle retention body
- Patent number 6,571,887
- Issue date Jun 3, 2003
- SII Smith International, Inc.
- Quan V. Nguyen
- E21 - EARTH DRILLING MINING
Information Patent Grant
Cutter element with non-linear, expanded crest
- Patent number 6,561,293
- Issue date May 13, 2003
- Smith International, Inc.
- James C. Minikus
- E21 - EARTH DRILLING MINING
Information Patent Grant
Rock bit seal with multiple dynamic seal surface elements
- Patent number 6,536,542
- Issue date Mar 25, 2003
- Smith International, Inc.
- Zhigang Fang
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method for simulating drilling of roller cone bits and its applicat...
- Patent number 6,516,293
- Issue date Feb 4, 2003
- Smith International, Inc.
- Sujian Huang
- E21 - EARTH DRILLING MINING
Information Patent Grant
Rolling cone bit with gage and off-gage cutter elements positioned...
- Patent number 6,510,909
- Issue date Jan 28, 2003
- Smith International, Inc.
- Gary Ray Portwood
- E21 - EARTH DRILLING MINING
Information Patent Grant
Engineered enhanced inserts for rock drilling bits
- Patent number 6,484,826
- Issue date Nov 26, 2002
- Smith International, Inc.
- Nathan R. Anderson
- E21 - EARTH DRILLING MINING
Information Patent Grant
Engineered enhanced inserts for rock drilling bits
- Patent number 6,460,637
- Issue date Oct 8, 2002
- Smith International, Inc.
- Michael A. Siracki
- E21 - EARTH DRILLING MINING
Information Patent Grant
Drill bit inserts with variations in thickness of diamond coating
- Patent number 6,460,636
- Issue date Oct 8, 2002
- Smith International, Inc.
- Zhou Yong
- E21 - EARTH DRILLING MINING
Information Patent Grant
Centered-leg roller cone drill bit
- Patent number 6,439,326
- Issue date Aug 27, 2002
- Smith International, Inc.
- Sujian Huang
- E21 - EARTH DRILLING MINING
Information Patent Grant
Dual-seal drill bit pressure communication system
- Patent number 6,431,293
- Issue date Aug 13, 2002
- Smith International, Inc.
- Gary Ray Portwood
- E21 - EARTH DRILLING MINING
Information Patent Grant
Rolling cone bit with gage and off-gage cutter elements positioned...
- Patent number 6,390,210
- Issue date May 21, 2002
- Smith International, Inc.
- Gary Ray Portwood
- E21 - EARTH DRILLING MINING
Information Patent Grant
Composite constructions having ordered microstructures
- Patent number 6,361,873
- Issue date Mar 26, 2002
- Smith International, Inc.
- Zhou Yong
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Drill bit having canted seal
- Patent number 6,336,512
- Issue date Jan 8, 2002
- Smith International, Inc.
- Michael A. Siracki
- E21 - EARTH DRILLING MINING
Information Patent Grant
Engineered enhanced inserts for rock drilling bits
- Patent number 6,199,645
- Issue date Mar 13, 2001
- Smith International, Inc.
- Nathan R. Anderson
- E21 - EARTH DRILLING MINING
Information Patent Grant
Dual-seal drill bit pressure communication system
- Patent number 6,196,339
- Issue date Mar 6, 2001
- Smith International, Inc.
- Gary Ray Portwood
- E21 - EARTH DRILLING MINING
Information Patent Grant
Dual functioning seal for rock bits
- Patent number 6,179,296
- Issue date Jan 30, 2001
- Smith International, Inc.
- Chris E. Cawthorne
- E21 - EARTH DRILLING MINING
Information Patent Grant
Dual functioning seal for rock bits
- Patent number 6,170,830
- Issue date Jan 9, 2001
- Smith International, Inc.
- Chris E. Cawthorne
- E21 - EARTH DRILLING MINING
Information Patent Grant
Cutter element with non-rectilinear crest
- Patent number 6,161,634
- Issue date Dec 19, 2000
- James C. Minikus
- E21 - EARTH DRILLING MINING
Information Patent Grant
Composite earth boring bit seal
- Patent number 6,123,337
- Issue date Sep 26, 2000
- Smith International, Inc.
- Zhigang Fang
- E21 - EARTH DRILLING MINING
Information Patent Grant
Non-symmetrical stress-resistant rotary drill bit cutter element
- Patent number 6,059,054
- Issue date May 9, 2000
- Smith International, Inc.
- Gary Ray Portwood
- E21 - EARTH DRILLING MINING
Information Patent Grant
Sealed bearing drill bit with dual-seal configuration
- Patent number 6,033,117
- Issue date Mar 7, 2000
- Smith International, Inc.
- Peter Cariveau
- E21 - EARTH DRILLING MINING
Information Patent Grant
Rolling cone bit having gage and nestled gage cutter elements havin...
- Patent number 5,967,245
- Issue date Oct 19, 1999
- Smith International, Inc.
- Gary Edward Garcia
- E21 - EARTH DRILLING MINING
Information Patent Grant
Steel tooth cutter element with gage facing knee
- Patent number 5,868,213
- Issue date Feb 9, 1999
- Smith International, Inc.
- Dennis Cisneros
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Bearing and lubrication system for earth boring bit
- Publication number 20050077087
- Publication date Apr 14, 2005
- Smith International, Inc.
- Lance T. Richman
- E21 - EARTH DRILLING MINING
Information Patent Application
Shaped inserts with increased retention force
- Publication number 20050067196
- Publication date Mar 31, 2005
- Ramamurthy Viswanadham
- E21 - EARTH DRILLING MINING
Information Patent Application
Cutter element with non-linear, expanded crest
- Publication number 20030188896
- Publication date Oct 9, 2003
- Smith International, Inc.
- James C. Minikus
- E21 - EARTH DRILLING MINING
Information Patent Application
Rock bit seal with extrusion prevention member
- Publication number 20030029645
- Publication date Feb 13, 2003
- Nephi Mourik
- E21 - EARTH DRILLING MINING
Information Patent Application
Dual-seal drill bit pressure communication system
- Publication number 20030019666
- Publication date Jan 30, 2003
- Smith International, Inc.
- Gary Ray Portwood
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Roller cone bits with wear and fracture resistant surface
- Publication number 20020162691
- Publication date Nov 7, 2002
- Zhigang Fang
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Dual-seal drill bit pressure communication system
- Publication number 20020153172
- Publication date Oct 24, 2002
- Gary Ray Portwood
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Rolling cone bit with gage and off-gage cutter elements positioned...
- Publication number 20020153171
- Publication date Oct 24, 2002
- Smith International, Inc.
- Gary Ray Portwood
- E21 - EARTH DRILLING MINING
Information Patent Application
Cutter element with non-linear, expanded crest
- Publication number 20010025728
- Publication date Oct 4, 2001
- James C. Minikus
- E21 - EARTH DRILLING MINING

Chris Edward Cawthorne

Person

Patents Grantslast 30 patents

Shaped inserts with increased retention force

Bearing and lubrication system for earth boring bit

Rock bit seal with extrusion prevention member

Cutter element with non-linear, expanded crest

Dual-seal drill bit pressure communication system

Dual-seal drill bit pressure communication system

Roller cone bits with wear and fracture resistant surface

Directional flow nozzle retention body

Cutter element with non-linear, expanded crest

Rock bit seal with multiple dynamic seal surface elements

Method for simulating drilling of roller cone bits and its applicat...

Rolling cone bit with gage and off-gage cutter elements positioned...

Engineered enhanced inserts for rock drilling bits

Engineered enhanced inserts for rock drilling bits

Drill bit inserts with variations in thickness of diamond coating

Centered-leg roller cone drill bit

Dual-seal drill bit pressure communication system

Rolling cone bit with gage and off-gage cutter elements positioned...

Composite constructions having ordered microstructures

Drill bit having canted seal

Engineered enhanced inserts for rock drilling bits

Dual-seal drill bit pressure communication system

Dual functioning seal for rock bits

Dual functioning seal for rock bits

Cutter element with non-rectilinear crest

Composite earth boring bit seal

Non-symmetrical stress-resistant rotary drill bit cutter element

Sealed bearing drill bit with dual-seal configuration

Rolling cone bit having gage and nestled gage cutter elements havin...

Steel tooth cutter element with gage facing knee

Patents Applicationslast 30 patents

Bearing and lubrication system for earth boring bit

Shaped inserts with increased retention force

Cutter element with non-linear, expanded crest

Rock bit seal with extrusion prevention member

Dual-seal drill bit pressure communication system

Roller cone bits with wear and fracture resistant surface

Dual-seal drill bit pressure communication system

Rolling cone bit with gage and off-gage cutter elements positioned...

Cutter element with non-linear, expanded crest