Patent Assignment
Reel/Frame 017923/0150
Assignment of Assignor's Interest
Recorded: 2006-07-12
Pages: 5
Assignors
DUYVESTEYN, WILLEM P.C.
Executed: 2006-03-28
MORLEY, RAYMOND L.
Executed: 2006-06-01
HANSON, JAMES S.
Executed: 2006-06-14
Assignee
WESTERN OIL SANDS USA, INC.
204 EDISON WAY, RENO, NEVADA, 89502
Covered Properties
(2)
Method for Obtaining Bitumen from Tar Sands
Method for obtaining bitumen from tar sands
Application:
60/617,739 →
Related Assignments
(7)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignor's Interest
Dec 23, 2008
From: WESTERN OIL SANDS USA, INC.
To: MARATHON OIL CANADA CORPORATION
Reel/Frame 022022/0971 →
Assignment of Assignor's Interest
Jun 22, 2009
From: WESTERN OIL SANDS USA, INC.,
To: MARATHON OIL CANADA CORPORATION
Reel/Frame 022854/0865 →
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 →