Patent Assignment
Reel/Frame 017736/0950
Assignment of Assignor's Interest
Recorded: 2006-06-05
Pages: 6
Assignors
DUYVESTEYN, WILLEM P.C.
Executed: 2006-06-01
KIFT, JULIAN
Executed: 2006-06-01
MORLEY, RAYMOND L.
Executed: 2006-06-01
Assignee
WESTERN OIL SANDS USA, INC.
204 EDISON WAY, RENO, NEVADA, 89502
Covered Property
(1)
Processing Asphaltene-Containing Tailings
Related Assignments
(3)
Other recorded transfers of the patent 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 022023/0013 →
Assignment of Assignor's Interest
Apr 30, 2012
From: MARATHON OIL CANADA CORPORATION
To: SHELL CANADA ENERGY
Reel/Frame 028128/0322 →
Nunc Pro Tunc Assignment
Feb 27, 2018
From: SHELL CANADA ENERGY
To: CANADIAN NATURAL UPGRADING LIMITED
Reel/Frame 045054/0463 →