Patent Assignment
Reel/Frame 025104/0722
Merger
Recorded: 2010-10-07
Pages: 8
Assignor
CENTURY OILFIELD SERVICES INC.
Executed: 2010-01-01
Assignee
CALFRAC WELL SERVICES LTD.
4500, 855 - 2ND STREET S.W., CALGARY, T2P 4K7, CANADA
Covered Properties
(3)
Hydrocarbon-Based Fracturing Fluid Compositions, Methods of Preparation and Methods of Use
Non-toxic, green fracturing fluid compositions, methods of preparation and methods of use
Application:
12/458,763 →
Publication:
US 2010/0044048
Green Coal Bed Methane Fracturing Fluid Compositions, Methods of Preparation and Methods of Use
Related Assignments
(3)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignor's Interest
Nov 3, 2009
From: LESHCHYSHYN, TIMOTHY TYLER; BEATON, PETER W; COOLEN, THOMAS MICHAEL
To: CENTURY OILFIELD SERVICES, INC.
Reel/Frame 023461/0058 →
Assignment of Assignor's Interest
Nov 3, 2009
From: LESHCHYSHYN, TIMOTHY TYLER; BEATON, PETER W; COOLEN, THOMAS MICHAEL
To: CENTURY OILFIELD SERVICES, INC.
Reel/Frame 023461/0113 →
Assignment of Assignor's Interest
Oct 7, 2010
From: LESHCHYSHYN, TIMOTHY T; BEATON, PETER WILLIAM; COOLEN, THOMAS MICHAEL
To: CENTURY OILFIELD SERVICES INC.
Reel/Frame 025104/0467 →