Patent Assignment
Reel/Frame 013394/0948
Assignment of Assignor's Interest
Recorded: 2003-01-24
Pages: 3
Assignor
GO BONCAN, VIRGILIO C.
Executed: 2003-01-14
Assignee
BJ SERVICES COMPANY
5500 NORTHWEST CENTRAL DRIVE, HOUSTON, TEXAS, 77092
Covered Property
(1)
Polymer Shell Encapsulated Gas as a Cement Expansion Additive
Related Assignments
(2)
Other recorded transfers of the patent in this record — the chain of ownership.