IP Library › Assignment 028128/0322
Patent Assignment
Reel/Frame 028128/0322

Assignment of Assignor's Interest

Recorded: 2012-04-30 Pages: 7
Assignor
MARATHON OIL CANADA CORPORATION
Executed: 2011-07-01
Assignee
SHELL CANADA ENERGY
400 - 4TH AVENUE S.W., CALGARY, T2P 0J4, CANADA
Covered Properties (3)
Processing Asphaltene-Containing Tailings
Patent: 7,585,407 →
Application: 11/371,327 →
Publication: US 2007/0209971
Processing Asphaltene-Containing Tailings
Patent: 8,679,325 →
Application: 12/404,150 →
Publication: US 2009/0173668
Processing Asphaltene-Containing Tailings
Patent: 8,354,067 →
Application: 12/404,165 →
Publication: US 2009/0175769
Related Assignments (3)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignor's Interest Jun 5, 2006
From: DUYVESTEYN, WILLEM P.C.; KIFT, JULIAN; MORLEY, RAYMOND L.
To: WESTERN OIL SANDS USA, INC.
Reel/Frame 017736/0950 →
Assignment of Assignor's Interest Dec 23, 2008
From: WESTERN OIL SANDS USA, INC.
To: MARATHON OIL CANADA CORPORATION
Reel/Frame 022023/0013 →
Nunc Pro Tunc Assignment Feb 27, 2018
From: SHELL CANADA ENERGY
To: CANADIAN NATURAL UPGRADING LIMITED
Reel/Frame 045054/0463 →