Patent Assignment
Reel/Frame 016994/0136
Assignment of Assignor's Interest
Recorded: 2005-09-16
Pages: 3
Assignors
HEMPHILL, EDWARD RYAN
Executed: 2005-09-14
BERCKENHOFF, MICHAEL WAYNE
Executed: 2005-09-14
CARBAUGH, WILLIAM L.
Executed: 2005-09-14
Assignee
HYDRIL COMPANY LP
3300 NORTH SAM HOUSTON PARKWAY EAST, HOUSTON, TEXAS, 77032
Covered Property
(1)
Mounts for Blowout Preventer Bonnets
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Merger
Mar 28, 2008
From: HYDRIL COMPANY LP
To: HYDRIL GENERAL LLC
Reel/Frame 020718/0733 →
Change of Name
Mar 28, 2008
From: HYDRIL GENERAL LLC
To: HYDRIL LLC
Reel/Frame 020718/0758 →
Assignment of Assignor's Interest
Jun 5, 2008
From: HYDRIL LLC
To: HYDRIL USA MANUFACTURING LLC
Reel/Frame 021050/0491 →