Patent Assignment
Reel/Frame 036796/0095
Assignment of Assignor's Interest
Recorded: 2015-10-15
Pages: 8
Assignor
WEATHERFORD CANADA PARTNERSHIP
Executed: 2014-12-30
Assignee
LUBRIZOL OILFIELD SOLUTIONS, INC.
29400 LAKELAND BLVD., WICKLIFFE, OHIO, 44092
Covered Properties
(9)
Packer Fluid
Single Fluid Acidizing Treatment
Clay Control Additive for Wellbore Fluids
Fluid with Asphaltene Control
Recycling of Oil-Based Drilling Muds
Non-Phosphorus-Based Gellants for Hydrocarbon Fluids
Clay Control Additive for Wellbore Fluids
Bitumen Anti-Accretion Additive
Non-Phosphorus-Based Gellant for Hydrocarbon Fluids
Related Assignments
(5)
Other recorded transfers of the patents in this record — the chain of ownership.
Amalgamation-Dissolution-General Conveyance and Assumption Agreement
Dec 11, 2013
From: WEATHERFORD ENGINEERED CHEMISTRY CANADA LTD
To: WEATHERFORD CANADA PARTNERSHIP
Reel/Frame 031794/0755 →
Amalgamation-Dissolution-General Conveyance and Assumption Agreement
Jan 6, 2014
From: WEATHERFORD ENGINEERED CHEMISTRY CANADA LTD
To: WEATHERFORD CANADA PARTNERSHIP
Reel/Frame 031923/0486 →
Amalgamation-Dissolution-General Conveyance and Assumption Agreement
Jan 6, 2014
From: WEATHERFORD ENGINEERED CHEMISTRY CANADA LTD
To: WEATHERFORD CANADA PARTNERSHIP
Reel/Frame 031923/0521 →
Amalgamation-Dissolution-General Conveyance and Assumption Agreement
Jan 7, 2014
From: WEATHERFORD ENGINEERED CHEMISTRY CANADA LTD
To: WEATHERFORD CANADA PARTNERSHIP
Reel/Frame 031925/0207 →
Assignment of Assignor's Interest
Jan 18, 2018
From: LUBRIZOL OILFIELD SOLUTIONS, INC.
To: THE LUBRIZOL CORPORATION
Reel/Frame 044655/0922 →