Patent Assignment
Reel/Frame 030499/0520
Assignment of Assignor's Interest
Recorded: 2013-05-29
Pages: 3
Assignor
KERR, RICHARD KELSO
Executed: 2012-05-03
Assignee
NEXEN INC.
2900, 801 - 7TH AVENUE S.W., CALGARY, ALBERTA, 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.
Change of Name
Nov 15, 2013
From: NEXEN ENERGY INC.
To: NEXEN ENERGY ULC
Reel/Frame 031611/0627 →
Certificate of Continuation
Nov 15, 2013
From: NEXEN INC.
To: NEXEN ENERGY INC.
Reel/Frame 031644/0988 →
Change of Name
Feb 19, 2019
From: NEXEN ENERGY ULC
To: CNOOC PETROLEUM NORTH AMERICA ULC
Reel/Frame 048366/0576 →