Patent Assignment
Reel/Frame 050223/0280
Assignment of Assignor's Interest
Recorded: 2019-08-30
Pages: 7
Assignors
DHAWAN, ASHISH
Executed: 2019-08-21
HARKNESS, KELLEN
Executed: 2019-08-21
SILVERNAIL, CARTER M.
Executed: 2019-08-21
MONK, KEITH A.
Executed: 2019-08-21
Assignee
ECOLAB USA INC.
1 ECOLAB PLACE, SAINT PAUL, MINNESOTA, 55102
Covered Property
(1)
Use of Multiple Charged Cationic Compounds Derived from Polyamines for Clay Stabilization in Oil and Gas Operations
Related Assignments
(6)
Other recorded transfers of the patent in this record — the chain of ownership.
Security Interest
Jun 5, 2020
From: CHAMPIONX USA INC.
To: BANK OF AMERICA, N.A.
Reel/Frame 052848/0368 →
Security Interest
Jun 5, 2020
From: CHAMPIONX USA INC.
To: JPMORGAN CHASE BANK, N.A.
Reel/Frame 053250/0001 →
Assignment of Assignor's Interest
Aug 31, 2020
From: ECOLAB USA INC.
To: CHAMPIONX USA INC.
Reel/Frame 053639/0001 →
Release of Security Interest
Jun 7, 2022
From: BANK OF AMERICA, N.A.
To: CHAMPIONX USA INC.
Reel/Frame 060304/0267 →
Assignment of Assignor's Interest
Dec 14, 2023
From: CHAMPIONX USA INC.
To: CHAMPIONX LLC
Reel/Frame 065869/0839 →
Release of Security Interest in Patents
Jul 17, 2025
From: JPMORGAN CHASE BANK, N.A.
To: CHAMPIONX LLC; APERGY ESP SYSTEMS, LLC; APERGY BMCS ACQUISITION CORP; HARBISON-FISCHER, INC.
Reel/Frame 072004/0019 →