Patent Assignment
Reel/Frame 031601/0716
Assignment of Assignor's Interest
Recorded: 2013-11-14
Pages: 4
Assignee
TECHSTAR ENERGY SERVICES INC.
1110, 640 - 8TH AVENUE SW, CALGARY, T2P 1G7, CANADA
Covered Property
(1)
Drilling Fluid and Method for Drilling in Coal-Containing Formations
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Change of Name
Nov 14, 2013
From: TECHSTAR ENERGY SERVICES INC.
To: TECH-STAR FLUID SYSTEMS INC.
Reel/Frame 031637/0118 →
Assignment of Assignor's Interest
Feb 21, 2014
From: TECH-STAR FLUID SYSTEMS INC.
To: CANADIAN ENERGY SERVICES L.P.
Reel/Frame 032267/0036 →
Security Interest
Jan 30, 2015
From: CANADIAN ENERGY SERVICES L.P.
To: THE BANK OF NOVA SCOTIA
Reel/Frame 034857/0635 →