Patent Assignment
Reel/Frame 031971/0946
Assignment of Assignor's Interest
Recorded: 2014-01-15
Pages: 4
Assignors
MARATHON OIL CANADA CORPORATION
Executed: 2013-12-05
ALBERTA CORPORATION
Executed: 2013-12-05
Assignees
SHELL CANADA ENERGY
400 4TH AVENUE, S.W., CALGARY, ALBERTA, T2P 2H5, CANADA
CHEVRON CANADA LIMITED
500 5TH AVENUE, S.W., CALGARY, ALBERTA, T2P 0L7, CANADA
Covered Property
(1)
Methods for Obtaining Bitumen from Bituminous Materials
Related Assignments
(4)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Oct 22, 2009
From: DUYVESTEYN, WILLEM P.C.; KIFT, JULIAN
To: MARATHON OIL CANADA CORPORATION
Reel/Frame 023407/0668 →
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 →
Nunc Pro Tunc Assignment
Feb 27, 2018
From: SHELL CANADA ENERGY
To: CANADIAN NATURAL UPGRADING LIMITED
Reel/Frame 045054/0463 →