IP Library Assignment 030000/0793
Patent Assignment
Reel/Frame 030000/0793

Assignment of Assignor's Interest

Recorded: 2013-03-14 Pages: 2
Assignor
ROBERTS, ROBBIE
Executed: 2013-03-04
Assignee
GASFRAC ENERGY SERVICES INC.
SUITE 1900, 801 - 6 AVENUE S.W., CALGARY, ALBERTA, T2P 3W2, CANADA
Covered Property (1)
Pressure Balancing Proppant Addition Method and Apparatus
Patent: 9,664,025 →
Application: 13/822,966 →
Publication: US 2013/0168086
Related Assignments (4)
Other recorded transfers of the patent in this record — the chain of ownership.
Security Interest Jul 24, 2014
From: GASFRAC ENERGY SERVICES INC.
To: PNC BANK CANADA BRANCH
Reel/Frame 033395/0370 →
Assignment of Assignor's Interest Sep 10, 2015
From: GASFRAC ENERGY SERVICES INC.
To: STEP ENERGY SERVICES LTD.
Reel/Frame 036529/0835 →
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 →