Assignment of Assignor's Interest

Recorded: 2011-05-04 Pages: 3

Assignor

HUANG, MING YU

Executed: 2011-05-04

Assignee

HYDRIL USA MANUFACTURING LLC

3300 NORTH SAM HOUSTON PARKWAY E., HOUSTON, TEXAS, 77032-3411

Covered Property (1)

Fluorinated Elastomeric Blowout Preventer Packers and Method

Patent: 8,091,855 →

Application: 12/827,383 →

Publication: US 2012/0000644

Related Assignments (2)

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