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Patent Assignment
Reel/Frame 031923/0521

Amalgamation-Dissolution-General Conveyance and Assumption Agreement

Recorded: 2014-01-06 Pages: 24
Assignor
Assignee
WEATHERFORD CANADA PARTNERSHIP
333 5TH AVE SW, #1200, CALGARY, T2P3B6, CANADA
Covered Properties (2)
Clay Control Additive for Wellbore Fluids
Patent: 7,740,071 →
Application: 11/426,175 →
Publication: US 2006/0289164
Clay Control Additive for Wellbore Fluids
Patent: 7,915,202 →
Application: 12/768,618 →
Publication: US 2010/0210484
Related Assignments (2)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignor's Interest Oct 15, 2015
From: WEATHERFORD CANADA PARTNERSHIP
To: LUBRIZOL OILFIELD SOLUTIONS, INC.
Reel/Frame 036796/0095 →
Assignment of Assignor's Interest Jan 18, 2018
From: LUBRIZOL OILFIELD SOLUTIONS, INC.
To: THE LUBRIZOL CORPORATION
Reel/Frame 044655/0922 →