IP Library › Assignment 031972/0046
Patent Assignment
Reel/Frame 031972/0046

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
Patent: 8,864,982 →
Application: 12/648,164 →
Publication: US 2011/0155648
Related Assignments (4)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest Apr 6, 2010
From: DUYVESTEYN, WILLEM P.C.; KIFT, JULIAN; HOFFMAN, CHERISH M.; THOMPSON, WHIP C.
To: MARATHON OIL CANADA CORPORATION
Reel/Frame 024194/0016 →
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 →