Patent Assignment
Reel/Frame 026974/0340
Assignment of Assignor's Interest
Recorded: 2011-09-27
Pages: 2
Assignor
EWANEK, JOHN
Executed: 2006-11-30
Assignee
MUD KING DRILLING FLUIDS (2001) LTD.
1516 - 1ST STREET NORTH WEST, CALGARY, ALBERTA, T2M 2S8, CANADA
Covered Property
(1)
Water-Based Polymer Drilling Fluid and Method of Use
Application:
13/113,645 →
Publication:
US 2011/0224108
Related Assignments
(5)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Sep 27, 2011
From: MUD KING DRILLING FLUIDS (2008) LTD.
To: CCS CORPORATION
Reel/Frame 026975/0357 →
Change of Name
Apr 2, 2012
From: CCS CORPORATION
To: TERVITA CORPORATION
Reel/Frame 027975/0618 →
Grant of Security Interest in Patents
Feb 14, 2013
From: TERVITA CORPORATION
To: WILMINGTON TRUST, NATIONAL ASSOCIATION, AS COLLATERAL TRUSTEE
Reel/Frame 029817/0826 →
Assignment of Assignor's Interest
Jan 16, 2014
From: TERVITA CORPORATION
To: CANADIAN ENERGY SERVICES L.P.
Reel/Frame 031987/0835 →
Security Interest
Jan 30, 2015
From: CANADIAN ENERGY SERVICES L.P.
To: THE BANK OF NOVA SCOTIA
Reel/Frame 034857/0635 →