Patent Assignment
Reel/Frame 047298/0122
Assignment of Assignor's Interest
Recorded: 2018-10-24
Pages: 3
Assignor
DE, SUBHASIS
Executed: 2018-10-19
Assignee
ECOLAB USA INC.
1 ECOLAB PLACE, ST. PAUL, MINNESOTA, 55102
Covered Property
(1)
Preparation of New Stable Hydrogen Sulfide Scavengers Useful in Both Water as Well as Oil Medium Applications
Patent:
10,442,755 →
Application:
15/717,338 →
Publication:
US 2018/0093941
PCT:
PCT/US2017/053680 ↗
Related Assignments
(7)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Sep 27, 2017
From: ANANTANENI, PRAKASA RAO; HARRINGTON, RYAN MATTHEW; TARVERDI, DAVID; KARAS, LAWRENCE J.
To: ECOLAB USA INC.
Reel/Frame 043719/0140 →
Change of Address
Sep 17, 2019
From: ECOLAB USA INC.
To: ECOLAB USA INC.
Reel/Frame 050410/0502 →
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
Jan 28, 2021
From: ECOLAB USA INC.
To: CHAMPIONX USA INC.
Reel/Frame 055158/0707 →
Release of Security Interest
Jun 7, 2022
From: BANK OF AMERICA, N.A.
To: CHAMPIONX USA INC.
Reel/Frame 060304/0267 →
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 →