Assignment of Assignor's Interest

Recorded: 2012-07-26 Pages: 3

Assignor

ZHANG, KEWEI

Executed: 2012-07-18

Assignee

TRICAN WELL SERVICE LTD

645-7TH AVENUE S.W., SUITE 2900, CALGARY, ALBERTA, CANADA

Covered Property (1)

Compositions and Methods for Enhancing Fluid Recovery for Hydraulic Fracturing Treatments

Application: 13/522,679 →

Publication: US 2012/0322697

Related Assignments (1)

Other recorded transfers of the patent in this record — the chain of ownership.