IP Library › Assignment 026671/0964
Patent Assignment
Reel/Frame 026671/0964

Assignment of Assignor's Interest

Recorded: 2011-07-29 Pages: 4
Assignors
STOIAN, STEFAN ALEXANDRU
Executed: 2008-04-09
SMITH, CARL KEITH
Executed: 2008-04-09
Assignee
TECHSTAR ENERGY SERVICES INC.
1110, 640 - 8TH AVENUE SW, CALGARY, T2P 1G7, CANADA
Covered Property (1)
Drilling Fluid and Methods
Patent: 8,338,340 →
Application: 13/193,170 →
Publication: US 2011/0281777
Related Assignments (3)
Other recorded transfers of the patent in this record — the chain of ownership.
Change of Name Oct 31, 2011
From: TECH-STAR ENERGY SERVICES INC.
To: TECH-STAR FLUID SYSTEMS INC.
Reel/Frame 027151/0676 →
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 →