Patent Assignment
Reel/Frame 036529/0835
Assignment of Assignor's Interest
Recorded: 2015-09-10
Pages: 3
Assignor
GASFRAC ENERGY SERVICES INC.
Executed: 2015-04-02
Assignee
STEP ENERGY SERVICES LTD.
300, 505 3RD STREET, CALGARY, T2P 3E6, CANADA
Covered Property
(1)
Pressure Balancing Proppant Addition Method and Apparatus
Related Assignments
(4)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Mar 14, 2013
From: ROBERTS, ROBBIE
To: GASFRAC ENERGY SERVICES INC.
Reel/Frame 030000/0793 →
Security Interest
Jul 24, 2014
From: GASFRAC ENERGY SERVICES INC.
To: PNC BANK CANADA BRANCH
Reel/Frame 033395/0370 →
Assignment of Assignor's Interest
Apr 24, 2017
From: STEP ENERGY SERVICES LTD.
To: STEP ENERGY SERVICES (BVI) LTD.
Reel/Frame 042130/0954 →
Assignment of Assignor's Interest
Apr 24, 2017
From: STEP ENERGY SERVICES (BVI) LTD.
To: STEP ENERGY SERVICES LLC
Reel/Frame 042131/0181 →