Patent Assignment
Reel/Frame 022183/0342
Assignment of Assignor's Interest
Recorded: 2009-01-30
Pages: 3
Assignor
BERCKENHOFF, MICHAEL WAYNE
Executed: 2009-01-23
Assignee
HYDRIL USA MANUFACTURING LLC
3300 NORTH SAM HOUSTON PARKWAY EAST, HOUSTON, TEXAS, 77032
Covered Property
(1)
Pressure energized radial seal
Related Assignments
(4)
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 →
Change of Name
Sep 27, 2021
From: HYDRIL USA MANUFACTURING LLC
To: HYDRIL USA DISTRIBUTION LLC
Reel/Frame 057608/0915 →