IP Library Assignment 027885/0722
Patent Assignment
Reel/Frame 027885/0722

Assignment of Assignor's Interest

Recorded: 2012-03-19 Pages: 12
Assignors
LIMANOWKA, WOJCIECH A.
Executed: 2011-01-13
VUKADIN, ZORAN
Executed: 2011-01-13
PETTIGREW, DANA
Executed: 2012-01-16
Assignee
NEXEN INC.
2900, 801 - 7TH AVENUE S.W., CALGARY, T2P 3P7, CANADA
Covered Property (1)
High Pressure Multistage Centrifugal Pump for Fracturing Hydrocarbon Reserves
Patent: 8,944,168 →
Application: 13/353,353 →
Publication: US 2012/0205112
Related Assignments (3)
Other recorded transfers of the patent in this record — the chain of ownership.
Change of Name Nov 15, 2013
From: NEXEN ENERGY INC.
To: NEXEN ENERGY ULC
Reel/Frame 031611/0627 →
Certificate of Continuation Nov 15, 2013
From: NEXEN INC.
To: NEXEN ENERGY INC.
Reel/Frame 031644/0988 →
Change of Name Feb 19, 2019
From: NEXEN ENERGY ULC
To: CNOOC PETROLEUM NORTH AMERICA ULC
Reel/Frame 048366/0576 →