Patent Assignment
Reel/Frame 031593/0974
Assignment of Assignor's Interest
Recorded: 2013-11-13
Pages: 3
Assignor
KERR, RICHARD KELSO
Executed: 2013-04-30
Assignee
NEXEN INC.
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 Lean Zones ("Lz-Sagdox")
Application:
14/078,983 →
Publication:
US 2014/0166278
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Change of Name
Nov 13, 2013
From: NEXEN ENERGY INC.
To: NEXEN ENERGY ULC
Reel/Frame 031594/0146 →
Certificate of Continuation
Nov 13, 2013
From: NEXEN INC.
To: NEXEN ENERGY INC.
Reel/Frame 031628/0452 →
Change of Name
Feb 19, 2019
From: NEXEN ENERGY ULC
To: CNOOC PETROLEUM NORTH AMERICA ULC
Reel/Frame 048366/0576 →