Patent Assignment
Reel/Frame 020686/0181
Assignment of Assignor's Interest
Recorded: 2008-03-21
Pages: 3
Assignor
DUYVESTEYN, WILLEM P.C.
Executed: 2008-03-20
Assignee
MARATHON OIL COMPANY
5555 SAN FELIPE, HOUSTON, TEXAS, 77056
Covered Property
(1)
Separation of Tailings That Include Asphaltenes
Related Assignments
(6)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Dec 23, 2008
From: KIFT, JULIAN
To: MARATHON OIL CANADA CORPORATION
Reel/Frame 022023/0137 →
Assignment of Assignor's Interest
Dec 23, 2008
From: MARATHON OIL COMPANY
To: MARATHON OIL CANADA CORPORATION
Reel/Frame 022023/0180 →
Change of Name
Jan 23, 2013
From: MARATHON OIL CANADA CORPORATION
To: MARATHON CANADIAN OIL SANDS HOLDING LIMITED
Reel/Frame 029675/0197 →
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
Dec 9, 2015
From: MARATHON OIL CANADA CORPORATION
To: MARATHON OIL CANADA CORPORATION; SHELL CANADA ENERGY
Reel/Frame 037245/0777 →
Nunc Pro Tunc Assignment
Feb 27, 2018
From: SHELL CANADA ENERGY
To: CANADIAN NATURAL UPGRADING LIMITED
Reel/Frame 045054/0463 →