Patent Assignment
Reel/Frame 029019/0740
Assignment of Assignor's Interest
Recorded: 2012-09-25
Pages: 6
Assignors
JOSHI, MAHENDRA
Executed: 2012-08-09
KIFT, JULIAN
Executed: 2012-08-06
HOFFMAN, CHERISH M.
Executed: 2012-08-07
THOMPSON, WHIP C.
Executed: 2012-08-08
ZELNIK, DOMINIC J.
Executed: 2012-08-23
Assignee
MARATHON OIL CANADA CORPORATION
2400, 440 - 2ND AVENUE SW, CALGARY, T2P 5E9, CANADA
Covered Properties
(3)
Methods for Extracting Bitumen From Bituminous Material
Application:
13/559,124 →
Publication:
US 2013/0026078
Methods for Extracting Bitumen from Bituminous Material
Application:
61/511,913 →
Methods for Extracting Bitumen from Bituminous Material
Application:
61/525,582 →
Related Assignments
(4)
Other recorded transfers of the patents 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
Jan 15, 2014
From: MARATHON OIL CANADA CORPORATION
To: SHELL CANADA ENERGY; CHEVRON CANADA LIMITED
Reel/Frame 031973/0031 →
Nunc Pro Tunc Assignment
Feb 27, 2018
From: SHELL CANADA ENERGY
To: CANADIAN NATURAL UPGRADING LIMITED
Reel/Frame 045054/0463 →