Patent Assignment
Reel/Frame 037893/0076
Assignment of Assignor's Interest
Recorded: 2016-03-04
Pages: 5
Assignors
MCDONALD, MICHAEL JAMES
Executed: 2016-01-28
MILLER, NEIL THOMAS
Executed: 2015-12-07
LI, XIANGLIAN
Executed: 2016-01-28
ELPHINGSTONE, EUGENE ALBERT
Executed: 2015-12-04
OTT, WILLIAM K.
Executed: 2015-12-04
Assignee
PQ CORPORATION
300 LINDENWOOD DRIVE, VALLEYBROOKE CORPORATE CENTER, MALVERN, PENNSYLVANIA, 19355-1740
Covered Properties
(2)
Silica Gel as a Viscosifier for Subterranean Fluid System
Application:
14/892,051 →
Publication:
US 2016/0090525
Silica-Based Hydraulic Fracture Fluid
Application:
61/827,211 →
Related Assignments
(7)
Other recorded transfers of the patents in this record — the chain of ownership.
Patent Security Agreement (Notes)
Jun 1, 2016
From: PQ CORPORATION
To: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS COLLATERAL AGENT
Reel/Frame 038860/0012 →
Patent Security Agreement (Abl)
Jun 1, 2016
From: PQ CORPORATION
To: CITIBANK, N.A., AS COLLATERAL AGENT
Reel/Frame 038861/0071 →
Patent Security Agreement (Term)
Jun 1, 2016
From: PQ CORPORATION
To: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS COLLATERAL AGENT
Reel/Frame 038860/0900 →
Release of Security Interest at R/F 38860/0012
Jul 22, 2020
From: WELLS FARGO BANK, N.A., AS COLLATERAL AGENT
To: PQ CORPORATION
Reel/Frame 053281/0616 →
Partial Release of Security Interest in Patents Recorded at R/F 038861/0071
Aug 5, 2021
From: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS COLLATERAL AGENT
To: PQ CORPORATION
Reel/Frame 057089/0345 →
Release of Security Interest in Patents Recorded at R/F 038860/0900
Aug 5, 2021
From: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS ADMINISTRATIVE AGENT
To: PQ CORPORATION
Reel/Frame 057089/0382 →
Corrective Assignment to Correct the Conveying Party Name Previously Recorded at Reel: 057089 Frame: 0345. Assignor(S) Hereby Confirms the Release of Security Interest.
Aug 6, 2021
From: CITIBANK, N.A., AS COLLATERAL AGENT
To: PQ CORPORATION
Reel/Frame 057109/0688 →