IP Library › Assignment 028807/0690
Patent Assignment
Reel/Frame 028807/0690

Assignment of Assignor's Interest

Recorded: 2012-08-17 Pages: 4
Assignors
DUYVESTEYN, WILLEM P. C.
Executed: 2009-08-06
KIFT, JULIAN
Executed: 2009-08-21
Assignee
MARATHON OIL CANADA CORPORATION
440 - SECOND AVENUE, S.W., ERNST & YOUNG TOWER, CALGARY, ALBERTA, T2P 5E9, CANADA
Covered Property (1)
Dry, Stackable Tailings and Methods for Producing the Same
Patent: 8,658,029 →
Application: 13/584,677 →
Publication: US 2012/0305452
Related Assignments (4)
Other recorded transfers of the patent in this record — the chain of ownership.
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 Oct 9, 2014
From: MARATHON OIL CANADA CORPORATION
To: SHELL CANADA ENERGY; CHEVRON CANADA LIMITED
Reel/Frame 033923/0067 →
Nunc Pro Tunc Assignment Feb 27, 2018
From: SHELL CANADA ENERGY
To: CANADIAN NATURAL UPGRADING LIMITED
Reel/Frame 045054/0463 →