Assignment of Assignor's Interest

Recorded: 2011-01-19 Pages: 6

Assignors

GUPTA, D.V. SATYANARAYANA

Executed: 2011-01-04

CHETTY, MADHUKAR

Executed: 2010-12-13

CARMAN, PAUL SCOTT

Executed: 2010-12-14

Assignee

BAKER HUGHES INCORPORATED

4601 WESTWAY PARK BLVD., HOUSTON, TEXAS, 77041

Covered Property (1)

Oil Field Treatment Fluids Comprising Zwitterionic Betaine-Group-Containing Polymers

Patent: 8,183,181 →

Application: 12/950,756 →

Publication: US 2012/0129738

Related Assignments (2)

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