Assignment of Assignor's Interest

Recorded: 2010-10-07 Pages: 3

Assignors

LESHCHYSHYN, TIMOTHY T

Executed: 2008-10-15

BEATON, PETER WILLIAM

Executed: 2008-10-15

COOLEN, THOMAS MICHAEL

Executed: 2008-10-15

Assignee

CENTURY OILFIELD SERVICES INC.

404 - 6TH AVE. SW, SUITE 300, CALGARY, T2P 0R9, CANADA

Covered Property (1)

Hydrocarbon-Based Fracturing Fluid Compositions, Methods of Preparation and Methods of Use

Patent: 8,211,834 →

Application: 12/457,559 →

Publication: US 2010/0101796

Related Assignments (1)

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