Patent Assignment
Reel/Frame 053471/0077
Assignment of Assignor's Interest
Recorded: 2020-08-12
Pages: 4
Assignor
CARRUTH, DON V.
Executed: 2014-11-05
Assignee
DON-NAN PUMP AND SUPPLY CO., INC.
3427 E TX-158, MIDLAND, TEXAS, 79706
Covered Properties
(4)
Cage Assembly for Ball Check Valves
Patent:
6,029,685 →
Application:
09/231,119 →
Downhole Gas/Liquid Separator and Method
Plunger Adapter
Patent:
700,622 →
Application:
29/418,661 →
Plunger Adapter
Patent:
682,317 →
Application:
29/425,948 →
Related Assignments
(7)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignor's Interest
Aug 12, 2020
From: DON-NAN PUMP AND SUPPLY CO., INC.
To: SCHLUMBERGER TECHNOLOGY CORPORATION
Reel/Frame 053471/0291 →
Recordable Confirmatory Patent Assignment
Nov 6, 2020
From: SCHLUMBERGER TECHNOLOGY CORPORATION
To: SCHLUMBERGER LIFT SOLUTIONS, LLC
Reel/Frame 054341/0311 →
Security Interest
Nov 23, 2020
From: SCHLUMBERGER LIFT SOLUTIONS LLC
To: PNC BANK, NATIONAL ASSOCIATION
Reel/Frame 054443/0693 →
Change of Name
Dec 4, 2020
From: SCHLUMBERGER LIFT SOLUTIONS LLC
To: LUFKIN LIFT SOLUTIONS LLC
Reel/Frame 054600/0108 →
Assignment of Assignor's Interest
Mar 6, 2025
From: LUFKIN LIFT SOLUTIONS LLC; LUFKIN US ACQUISITION COMPANY, LLC
To: RAVDOS HOLDINGS INC.
Reel/Frame 070423/0404 →
Partial Termination and Release of Patent Security Agreement
Apr 16, 2025
From: PNC BANK, NATIONAL ASSOCIATION
To: RAVDOS HOLDINGS INC.
Reel/Frame 070863/0829 →
Assignment of Assignor's Interest
Jul 18, 2025
From: RAVDOS HOLDINGS INC.
To: Q2 ARTIFICIAL LIFT SERVICES LLC
Reel/Frame 071755/0547 →