Patent Assignment
Reel/Frame 022216/0497
Assignment of Assignor's Interest
Recorded: 2009-02-05
Pages: 3
Assignor
LIU, ZHEN
Executed: 2009-02-04
Assignee
HYDRIL USA MANUFACTURING LLC
3300 NORTH SAM HOUSTON PARKWAY EAST, HOUSTON, TEXAS, 77032
Covered Property
(1)
Movement Detection Circuit of Solenoid Shear Seal Valve on Subsea Pressure Control System and Method of Detecting Movement of Solenoid Actuator
Related Assignments
(1)
Other recorded transfers of the patent in this record — the chain of ownership.