Patent Assignment
Reel/Frame 022022/0971
Assignment of Assignor's Interest
Recorded: 2008-12-23
Pages: 3
Assignor
WESTERN OIL SANDS USA, INC.
Executed: 2008-11-30
Assignee
MARATHON OIL CANADA CORPORATION
440 - SECOND AVENUE, S.W., ERNST & YOUNG TOWER, SUITE 2400, CALGARY, ALBERTA, T2P 5E9, CANADA
Covered Property
(1)
Method for Obtaining Bitumen from Tar Sands
Related Assignments
(6)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Jul 12, 2006
From: DUYVESTEYN, WILLEM P.C.; MORLEY, RAYMOND L.; HANSON, JAMES S.
To: WESTERN OIL SANDS USA, INC.
Reel/Frame 017923/0150 →
Change of Name
Jan 23, 2013
From: MARATHON OIL CANADA CORPORATION
To: MARATHON CANADIAN OIL SANDS HOLDING LIMITED
Reel/Frame 029676/0704 →
Change of Name
May 22, 2013
From: MARATHON CANADIAN OIL SANDS HOLDING LIMITED
To: MARATHON OIL CANADA CORPORATION
Reel/Frame 030467/0595 →
Assignment of Assignor's Interest
Jan 15, 2014
From: MARATHON OIL CANADA CORPORATION; ALBERTA CORPORATION
To: SHELL CANADA ENERGY; CHEVRON CANADA LIMITED
Reel/Frame 031971/0555 →
Assignment of Assignor's Interest
Jul 2, 2014
From: MARATHON OIL CANADA CORPORATION
To: SHELLCANADA ENERGY; CHEVRON CANADA LIMITED
Reel/Frame 033233/0477 →
Nunc Pro Tunc Assignment
Feb 27, 2018
From: SHELL CANADA ENERGY
To: CANADIAN NATURAL UPGRADING LIMITED
Reel/Frame 045054/0463 →