Patent Assignment
Reel/Frame 020650/0184
Assignment of Assignor's Interest
Recorded: 2008-03-14
Pages: 3
Assignor
KHANDOKER, SHAFIQ
Executed: 2007-09-18
Assignee
HYDRIL COMPANY LP
3300 N. SAM HOUSTON PARKWAY EAST, HOUSTON, TEXAS, 77032
Covered Property
(1)
Method of Designing Blowout Preventer Seal Using Finite Element Analysis
Application:
11/829,752 →
Publication:
US 2008/0027693
Related Assignments
(6)
Other recorded transfers of the patent in this record — the chain of ownership.
Merger
Mar 14, 2008
From: HYDRIL COMPANY LP
To: HYDRIL GENERAL LLC
Reel/Frame 020651/0551 →
Change of Name
Mar 14, 2008
From: HYDRIL GENERAL LLC
To: HYDRIL LLC
Reel/Frame 020655/0106 →
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 →
Assignment of Assignor's Interest
May 4, 2009
From: HYDRIL COMPANY LP
To: HYDRIL USA MANUFACTURING LLC
Reel/Frame 022635/0159 →