Craig Knull

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Leduc, CA

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Patents Grantslast 30 patents

Information Patent Grant
Rotary drag bit
- Patent number 9,038,752
- Issue date May 26, 2015
- Ulterra Drilling Tehcnologies, L.P.
- Craig Knull
- E21 - EARTH DRILLING MINING
Information Patent Grant
Fixed cutter drill bit with rotating cutter disc
- Patent number 8,881,848
- Issue date Nov 11, 2014
- Ulterra Drilling Technologies, L.P.
- Craig Knull
- E21 - EARTH DRILLING MINING
Information Patent Grant
Mud motor with integrated percussion tool and drill bit
- Patent number 8,851,204
- Issue date Oct 7, 2014
- Ulterra Drilling Technologies, L.P.
- Craig Knull
- F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
Information Patent Grant
Rotational impact drill assembly
- Patent number 6,742,609
- Issue date Jun 1, 2004
- United Diamond Ltd.
- Peter J. Gillis
- E21 - EARTH DRILLING MINING
Information Patent Grant
Apparatus and method for directional drilling with coiled tubing
- Patent number 6,571,888
- Issue date Jun 3, 2003
- Precision Drilling Technology Services Group, Inc.
- Laurier E. Comeau
- E21 - EARTH DRILLING MINING
Information Patent Grant
Pack-off bushing
- Patent number 6,330,912
- Issue date Dec 18, 2001
- Halliburton Energy Services, Inc.
- Ian Gillis
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
FIXED CUTTER DRILL BIT WITH ROTATING CUTTER DISC
- Publication number 20130292185
- Publication date Nov 7, 2013
- Ulterra Drilling Technologies, L.P.
- CRAIG KNULL
- E21 - EARTH DRILLING MINING
Information Patent Application
Rotary Drag Bit
- Publication number 20130075167
- Publication date Mar 28, 2013
- ULTERRA DRILLING TECHNOLOGIES, L.P.
- Craig Knull
- E21 - EARTH DRILLING MINING
Information Patent Application
Rotational impact drill assembly
- Publication number 20020166700
- Publication date Nov 14, 2002
- Peter J. Gillis
- E21 - EARTH DRILLING MINING
Information Patent Application
Apparatus and method for directional drilling with coiled tubing
- Publication number 20020166701
- Publication date Nov 14, 2002
- Laurier E. Comeau
- E21 - EARTH DRILLING MINING