Patent Assignment
Reel/Frame 031443/0317
Change of Name
Recorded: 2013-10-21
Pages: 2
Assignor
NEXEN ENERGY INC.
Executed: 2013-06-18
Assignee
NEXEN ENERGY ULC
2900, 801 - 7TH AVENUE S.W., CALGARY, ALBERTA, T2P 3P7, CANADA
Covered Property
(1)
Use of Steam Assisted Gravity Drainage with Oxygen ("Sagdox") in the Recovery of Bitumen in Thin Pay Zones
Application:
14/058,488 →
Publication:
US 2014/0096960
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Oct 21, 2013
From: KERR, RICHARD KELSO
To: NEXEN INC.
Reel/Frame 031443/0224 →
Certificate of Continuation
Oct 21, 2013
From: NEXEN INC.
To: NEXEN ENERGY INC.
Reel/Frame 031447/0819 →
Change of Name
Feb 19, 2019
From: NEXEN ENERGY ULC
To: CNOOC PETROLEUM NORTH AMERICA ULC
Reel/Frame 048366/0576 →