Patent Assignment
Reel/Frame 037824/0176
Assignment of Assignor's Interest
Recorded: 2016-02-15
Pages: 3
Assignor
NGUYEN, DUY T.
Executed: 2009-10-21
Assignee
NALCO COMPANY
1601 WEST DIEHL ROAD, NAPERVILLE, ILLINOIS, 60563
Covered Property
(1)
Foamers for Downhole Injection
Related Assignments
(8)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Aug 22, 2017
From: NALCO COMPANY LLC
To: ECOLAB USA INC.
Reel/Frame 043357/0541 →
Change of Name
Aug 22, 2017
From: NALCO COMPANY
To: NALCO COMPANY LLC
Reel/Frame 043633/0992 →
Security Interest
Jun 5, 2020
From: CHAMPIONX USA INC.
To: JPMORGAN CHASE BANK, N.A.
Reel/Frame 053250/0001 →
Security Interest
Jun 5, 2020
From: CHAMPIONX USA INC.
To: BANK OF AMERICA, N.A.
Reel/Frame 052848/0368 →
Assignment of Assignor's Interest
Sep 22, 2020
From: ECOLAB USA INC.
To: CHAMPIONX USA INC.
Reel/Frame 053849/0537 →
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 7, 2023
From: CHAMPIONX USA INC.
To: CHAMPIONX LLC
Reel/Frame 065799/0403 →
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 →