Patent Assignment
Reel/Frame 041217/0407
Change of Name
Recorded: 2017-02-09
Pages: 2
Assignor
NEXEN ENERGY INC.
Executed: 2013-06-18
Assignee
NEXEN ENERGY ULC
2900, 801 - 7TH AVENUE S.W., CALGARY, T2P 3P7, CANADA
Covered Property
(1)
Steam Assisted Gravity Drainage Processes with the Addition of Oxygen
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Feb 9, 2017
From: KERR, RICHARD KELSO
To: NEXEN INC.
Reel/Frame 041217/0041 →
Certificate of Continuation
Feb 9, 2017
From: NEXEN INC.
To: NEXEN ENERGY INC.
Reel/Frame 041671/0044 →
Change of Name
Feb 19, 2019
From: NEXEN ENERGY ULC
To: CNOOC PETROLEUM NORTH AMERICA ULC
Reel/Frame 048366/0576 →