Patent Assignment
Reel/Frame 022419/0357
Assignment of Assignor's Interest
Recorded: 2009-03-19
Pages: 3
Assignor
ZHENG, LIEHUA
Executed: 2008-08-21
Assignee
SICHUAN SANYUAN CHEM LIMITED, CORPORATION
52 (509) YONGFENG ROAD, GAOXIN DISTRICT, CHENGDU, CHINA
Covered Property
(1)
Scale Inhibiting Well Treatment
Related Assignments
(6)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Mar 19, 2009
From: MONTGOMERIE, HARRY; CHEN, PING; HAGEN, THOMAS
To: CHAMPION TECHNOLOGIES LIMITED
Reel/Frame 022419/0420 →
Assignment of Assignor's Interest
Feb 4, 2013
From: SICHUAN SANYUAN CHEM LIMITED, CORPORATION
To: CHAMPION TECHNOLOGIES LIMITED
Reel/Frame 029748/0065 →
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 →
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 →