Patent Assignment
Reel/Frame 015413/0154
Corrective Assignment to Correct the Zip Code of the Assignee. Previously Recorded on Reel 014559 Frame 0735.
Recorded: 2004-06-04
Pages: 4
Assignors
HEMPHILL, EDWARD R.
Executed: 2003-10-01
HOLLAND, WILLIAM R.
Executed: 2003-10-01
BERCKENHOFF, MICHAEL W.
Executed: 2003-10-01
Assignee
HYDRIL COMPANY L.P.
3300 N. SAM HOUSTON PARKWAY EAST, HOUSTON, TEXAS, 77032
Covered Property
(1)
Removable Seal Carrier for Blowout Preventer Bonnet Assembly
Related Assignments
(5)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Oct 6, 2003
From: HEMPHILL, EDWARD R.; HOLLAND, WILLIAM R.; BERCKENHOFF, MICHAEL W.
To: HYDRIL COMPANY L.P.
Reel/Frame 014559/0735 →
Merger
Mar 28, 2008
From: HYDRIL COMPANY LP
To: HYDRIL GENERAL LLC
Reel/Frame 020710/0717 →
Change of Name
Mar 28, 2008
From: HDRYIL GENERAL LLC
To: HYDRIL LLC
Reel/Frame 020710/0950 →
Assignment of Assignor's Interest
Jun 5, 2008
From: HYDRIL LLC
To: HYDRIL USA MANUFACTURING LLC
Reel/Frame 021050/0491 →
Change of Name
Sep 27, 2021
From: HYDRIL USA MANUFACTURING LLC
To: HYDRIL USA DISTRIBUTION LLC
Reel/Frame 057608/0915 →