Corrective Assignment to Correct the Application Number, Which Was Incorrectly Listed as 12/644,036 Previously Recorded on Reel 025547 Frame 0705. Assignor(S) Hereby Confirms the Text of the Original Assignment Shows in Bold Type the Correct Application Number 12/664,036..

Recorded: 2011-02-07 Pages: 7

Assignors

ZHANG, KEWEI

Executed: 2010-05-19

WIGGINS, CHRIS

Executed: 2010-05-19

Assignee

TRICAN WELL SERVICES, LTD.

645-7TH AVENUE SW, SUITE 2900, CALGARY, CANADA

Covered Property (1)

Well Service Compositions for Consolidation of Particulates in Subterranean Coal Seams

Patent: 8,499,835 →

Application: 12/664,036 →

Publication: US 2011/0011589

Related Assignments (3)

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