Patent Assignment
Reel/Frame 027299/0478
Assignment of Assignor's Interest
Recorded: 2011-11-30
Pages: 2
Assignor
ZHANG, KEWEI
Executed: 2008-04-10
Assignee
TRICAN WELL SERVICE LTD.
645-7TH AVENUE S.W., SUITE 2900, CALGARY, ALBERTA, T2P 4G8, CANADA
Covered Property
(1)
Aqueous Particulate Slurry Compositions and Methods of Making Same
Related Assignments
(2)
Other recorded transfers of the patent in this record — the chain of ownership.