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Patent Assignment
Reel/Frame 031925/0207

Amalgamation-Dissolution-General Conveyance and Assumption Agreement

Recorded: 2014-01-07 Pages: 24
Assignor
Assignee
WEATHERFORD CANADA PARTNERSHIP
333 5TH AVE SW, #1200, CALGARY, T2P3B6, CANADA
Covered Properties (4)
Recycling of Oil-Based Drilling Muds
Patent: 7,754,661 →
Application: 11/945,980 →
Publication: US 2008/0121564
Non-Phosphorus-Based Gellants for Hydrocarbon Fluids
Patent: 7,932,216 →
Application: 11/957,248 →
Publication: US 2008/0146466
Bitumen Anti-Accretion Additive
Patent: 9,249,350 →
Application: 12/779,827 →
Publication: US 2010/0298173
Non-Phosphorus-Based Gellant for Hydrocarbon Fluids
Patent: 8,709,983 →
Application: 13/020,860 →
Publication: US 2011/0124534
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 →