IP Library › Assignment 033234/0189
Patent Assignment
Reel/Frame 033234/0189

Assignment of Assignor's Interest

Recorded: 2014-07-02 Pages: 3
Assignor
MARATHON OIL CANADA CORPORATION
Executed: 2013-12-05
Assignee
SHELL CANADA ENERGY
400 4TH AVENUE S.W., HOUSTON, TEXAS, 77252-2463
Covered Property (1)
Methods for Extracting Bitumen from Bituminous Material
Patent: 8,877,044 →
Application: 12/956,701 →
Publication: US 2011/0180459
Related Assignments (5)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest Feb 25, 2011
From: DUYVESTEYN, WILLEM P.C.; MAHENDRA, JOSHI; KIFT, JULIAN; ZELNIK, DOMINIC J.
To: MARATHON OIL CANADA CORPORATION
Reel/Frame 025866/0530 →
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 Jan 15, 2014
From: MARATHON OIL CANADA CORPORATION
To: SHELL CANADA ENERGY; CHEVRON CANADA LIMITED
Reel/Frame 031972/0440 →
Nunc Pro Tunc Assignment Feb 27, 2018
From: SHELL CANADA ENERGY
To: CANADIAN NATURAL UPGRADING LIMITED
Reel/Frame 045054/0463 →