Assignment of Assignor's Interest

Recorded: 2009-02-10 Pages: 9

Assignors

JUDZIS, ARNIS

Executed: 2009-01-16

BLACK, ALAN D

Executed: 2009-01-22

GREEN, SIDNEY J

Executed: 2009-01-19

ROBERTSON, HOMER A

Executed: 2009-01-19

Assignee

TERRA TEK INC.

1935 SOUTH FREMONT DRIVE, SALT LAKE CITY, UTAH, 84104

Covered Property (1)

Optimizing Drilling Performance Using a Selected Drilling Fluid

Patent: 7,926,588 →

Application: 12/337,198 →

Publication: US 2009/0152007

Related Assignments (1)

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