Membership
Tour
Register
Log in
Wendall L. Siemens
Follow
Person
Calgary, CA
People
Overview
Industries
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Fluid erosion protection washer for rotating shaft in MWD tool
Patent number
7,839,719
Issue date
Nov 23, 2010
Schlumberger Technology Corporation
Anthony R. Dopf
E21 - EARTH DRILLING MINING
Information
Patent Grant
Fluid erosion protection washer for rotating shaft in MWD tool
Patent number
7,532,540
Issue date
May 12, 2009
Extreme Engineering Ltd.
Anthony R. Dopf
E21 - EARTH DRILLING MINING
Information
Patent Grant
Multi-conductor plug and socket apparatus
Patent number
7,462,957
Issue date
Dec 9, 2008
Extreme Engineering Ltd.
Paul L. Camwell
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Apparatus for receiving downhole acoustic signals
Patent number
6,956,791
Issue date
Oct 18, 2005
XAcT Downhole Telemetry Inc.
Anthony R. Dopf
G01 - MEASURING TESTING
Information
Patent Grant
Circuit to mitigate transformer shorted turn
Patent number
6,816,053
Issue date
Nov 9, 2004
Extreme Engineering Ltd.
Paul L. Camwell
H01 - BASIC ELECTRIC ELEMENTS
Patents Applications
last 30 patents
Information
Patent Application
FLUID EROSION PROTECTION WASHER FOR ROTATING SHAFT IN MWD TOOL
Publication number
20090224193
Publication date
Sep 10, 2009
SCHLUMBERGER TECHNOLOGY CORPORATION
Anthony R. Dopf
E21 - EARTH DRILLING MINING
Information
Patent Application
Acoustic telemetry system optimization
Publication number
20070257809
Publication date
Nov 8, 2007
XAcT Downhole Telemetry Inc.
Paul L. Camwell
E21 - EARTH DRILLING MINING
Information
Patent Application
Fluid erosion protection washer for rotating shaft in MWD tool
Publication number
20070045583
Publication date
Mar 1, 2007
Anthony R. Dopf
E21 - EARTH DRILLING MINING
Information
Patent Application
Multi-conductor plug and socket apparatus
Publication number
20050052796
Publication date
Mar 10, 2005
Paul L. Camwell
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
CIRCUIT TO MITIGATE TRANSFORMER SHORTED TURN
Publication number
20040196129
Publication date
Oct 7, 2004
Paul L. Camwell
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Apparatus for receiving downhole acoustic signals
Publication number
20040145970
Publication date
Jul 29, 2004
Extreme Engineering Ltd.
Anthony R. Dopf
E21 - EARTH DRILLING MINING