P

Inventor

DOPF ANTHONY R

CA13 patents
⚠️ This page may combine multiple inventors who share the name “DOPF ANTHONY R”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SCHLUMBERGER TECHNOLOGY CORP

3 patents
US7900968B2Mar 8, 2011

Electrical isolation connector for electromagnetic gap sub

SCHLUMBERGER TECHNOLOGY CORP16 citations90
US7839719B2Nov 23, 2010

Fluid erosion protection washer for rotating shaft in MWD tool

SCHLUMBERGER TECHNOLOGY CORP29 citations87
US7821178B2Oct 26, 2010

Brush and brush housing arrangement to mitigate hydrodynamic brush lift in fluid-immersed electric motors

SCHLUMBERGER TECHNOLOGY CORP2 citations61

CAMWELL PAUL L

3 patents
US8308199B2Nov 13, 2012

Electrical isolation connector for electromagnetic gap sub

CAMWELL PAUL L12 citations81
US8174929B2May 8, 2012

Spindle for mud pulse telemetry applications

CAMWELL PAUL L13 citations81
US8634274B2Jan 21, 2014

Spindle for mud pulse telemetry applications

CAMWELL PAUL L0 citations49

EXTREME ENGINEERING LTD

2 patents
US6902414B2Jun 7, 2005

Harsh environment rotatable connector

EXTREME ENGINEERING LTD59 citations94
US7532540B2May 12, 2009

Fluid erosion protection washer for rotating shaft in MWD tool

EXTREME ENGINEERING LTD0 citations46

DOPF ANTHONY R

2 patents
US8648733B2Feb 11, 2014

Electromagnetic telemetry assembly with protected antenna

DOPF ANTHONY R12 citations80
US8624464B2Jan 7, 2014

Brush and brush housing arrangement to mitigate hydrodynamic brush lift in fluid-immersed electric motors

DOPF ANTHONY R1 citations48

XACT DOWNHOLE TELEMETRY INC

1 patent
US6956791B2Oct 18, 2005

Apparatus for receiving downhole acoustic signals

XACT DOWNHOLE TELEMETRY INC65 citations94

CLARK BRIAN

1 patent
US9022144B2May 5, 2015

Drill bit assembly having electrically isolated gap joint for measurement of reservoir properties

CLARK BRIAN3 citations61

DRUMHELLER DOUGLAS S

1 patent
US8270251B2Sep 18, 2012

Acoustic isolator

DRUMHELLER DOUGLAS S4 citations60