Patent Assignment
Reel/Frame 026206/0721
Assignment of Assignor's Interest
Recorded: 2011-05-02
Pages: 3
Assignor
ERVIN, DAVID L
Executed: 2011-04-13
Assignee
SMITH INTERNATIONAL, INC.
1310 RANKIN RD., HOUSTON, TEXAS, 77073
Covered Property
(1)
Cementing Whipstock Apparatus and Methods
Related Assignments
(4)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Jun 5, 2013
From: DEWEY, CHARLES H.; CAMPBELL, JOHN E.; SWADI, SHANTANU N.; GREGUREK, PHILIP M.
To: SMITH INTERNATIONAL, INC.
Reel/Frame 030549/0359 →
Assignment of Assignor's Interest
Jan 3, 2020
From: SMITH INTERNATIONAL, INC.
To: WELLBORE INTEGRITY SOLUTIONS LLC
Reel/Frame 051470/0680 →
Abl Patent Security Agreement
Mar 17, 2020
From: WELLBORE INTEGRITY SOLUTIONS LLC
To: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS COLLATERAL AGENT
Reel/Frame 052184/0900 →
Release of Security Interest
Jul 20, 2021
From: WELLS FARGO BANK, NATIONAL ASSOCIATION
To: WELLBORE INTEGRITY SOLUTIONS LLC
Reel/Frame 056910/0165 →