DUAL GRADIENT SYSTEMS, LLC

City:

Richmond, Texas

Country:

United States

Published Applications:

Last publication date:

2011-12-22

Patent Grants:

Last grant date:

2014-09-30

Top Inventors for applications by DUAL GRADIENT SYSTEMS, LLC

These are the the leading inventors for applications assigned to DUAL GRADIENT SYSTEMS, LLC:

Luc deBoer 4 Houston, TX United States
Luc de Boer 2 Richmond, TX United States
Luc DEBOER 1 Richmond, TX United States

Recent patent applications by DUAL GRADIENT SYSTEMS, LLC

DUAL GRADIENT SYSTEMS, LLC based in Richmond, US has been assigned the rights to these inventions. The list includes both Pending Applications and Patent Grants:

#1 | 2011-12-22 ✅ Patent 8,844,653 granted on 2014-09-30

US20110308860A1

Fixed constructions

Continuous circulating sub for drill strings

#2 | 2010-02-25 ✅ Patent 8,393,403 granted on 2013-03-12

US20100044054A1

Fixed constructions

Drill string flow control valves and methods

#3 | 2009-08-27 ✅ Patent 8,066,079 granted on 2011-11-29

US20090211814A1

Fixed constructions

Drill string flow control valves and methods

#4 | 2008-12-11 ✅ Patent 7,992,654 granted on 2011-08-09

US20080302570A1

Fixed constructions

Dual gradient drilling method and apparatus with an adjustable centrifuge

#5 | 2008-12-11 ✅ Patent 7,762,357 granted on 2010-07-27

US20080302569A1

Fixed constructions

Dual gradient drilling method and apparatus with an adjustable centrifuge

#6 | 2007-10-25 ✅ Patent 7,584,801 granted on 2009-09-08

US20070246265A1

Fixed constructions

Drill string flow control valves and methods

#7 | 2006-04-06 ✅ Patent 7,992,655 granted on 2011-08-09

US20060070772A1

Fixed constructions

Dual gradient drilling method and apparatus with multiple concentric drill tubes and blowout preventers

AssigneeID:

232623 ⎘