Patent Assignment
Reel/Frame 029485/0725
Corrective Assignment to Correct the Corrective Assignment to Re-Record Assignee's Address Previously Recorded on Reel 025573 Frame 0358. Assignor(S) Hereby Confirms the to Managed Pressure Operations Pte Ltd., 1 Maritime Square, #12-04A, Harbour Front Centre, Singapore, Singapore 099253.
Recorded: 2012-12-17
Pages: 9
Assignor
LEUCHTENBERG, CHRISTIAN
Executed: 2010-12-08
Assignee
MANAGED PRESSURE OPERATIONS PTE LTD
1 MARITIME SQUARE, #12-04A, HARBOUR FRONT CENTRE, SINGAPORE, 099253, SINGAPORE
Covered Property
(1)
Method of Drilling a Subterranean Borehole
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Dec 8, 2010
From: LEUCHTENBERG, CHRISTIAN
To: SAUDI ARABIAN OIL COMPANY
Reel/Frame 025479/0234 →
Corrective Assignment to Correct the Assignee Previously Recorded on Reel 025479 Frame 0234. Assignor(S) Hereby Confirms the Saudi Arabian Oil Company 1 Eastern Avenue Dhahran, Saudi Arabia 31311.
Dec 30, 2010
From: LEUCHTENBERG, CHRISTIAN
To: MANAGED PRESSURE OPERATIONS PTE LTD.
Reel/Frame 025573/0358 →
Assignment of Assignor's Interest
Sep 27, 2022
From: MANAGED PRESSURE OPERATIONS PTE. LTD.
To: GRANT PRIDECO, INC.
Reel/Frame 061541/0558 →