Patent Assignment
Reel/Frame 020791/0127
Assignment of Assignor's Interest
Recorded: 2008-04-11
Pages: 2
Assignor
EWANEK, JOHN
Executed: 2006-11-30
Assignee
MUD KING DRILLING FLUIDS (2001) LTD.
#706, 505 6TH STREET SOUTH WEST, CALGARY, ALBERTA, T2P 1X5, CANADA
Covered Property
(1)
Water-Based Polymer Drilling Fluid and Method of Use
Application:
12/090,016 →
Publication:
US 2008/0214413
Related Assignments
(5)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Jan 2, 2009
From: MUD KING DRILLING FLUIDS (2008) LTD.
To: CCS CORPORATION
Reel/Frame 022048/0698 →
Notice of Grant of Security Interest in Patents
May 7, 2009
From: CCS CORPORATION
To: DEUTSCHE BANK AG NEW YORK BRANCH, AS COLLATERAL AGENT
Reel/Frame 022645/0715 →
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 →