Patent Assignment
Reel/Frame 053281/0616
Release of Security Interest at R/F 38860/0012
Recorded: 2020-07-22
Pages: 11
Assignor
WELLS FARGO BANK, N.A., AS COLLATERAL AGENT
Executed: 2020-07-22
Assignee
PQ CORPORATION
300 LINDENWOOD DRIVE, MALVERN, PENNSYLVANIA, 19355
Covered Properties
(39)
Stable High Solids, High Ratio Alkali Metal Silicate Solutions
Patent:
5,624,651 →
Application:
08/603,667 →
Silicas with Specific Contents of Cations as Supports for Olefin Polymerization Catalysts
Patent:
5,723,402 →
Application:
08/655,178 →
Olefin Polymerization Catalysts with Specific Silica Supports
Patent:
5,895,770 →
Application:
08/822,453 →
Process for Preparing Ferrierite
Patent:
5,985,238 →
Application:
08/885,628 →
Method for Purifying Alkali Metal Silicate Solutions
Patent:
6,132,618 →
Application:
09/061,825 →
Process and Composition for Refining Oils Using Metal-Substituted Silica Xerogels
Patent:
6,248,911 →
Application:
09/134,445 →
Particle Size Classifier
Patent:
6,220,446 →
Application:
09/276,178 →
Titanium on Silica Catalysts with Controlled Distributions
Aluminosilicate Stabilized Halogenated Polymers
Patent:
6,096,820 →
Application:
09/363,337 →
Process for Preparing a Modified Zeolite
Patent:
6,521,208 →
Application:
09/673,286 →
Process for Making and Using a Low Beverage Soluble Iron Content Adsorbent and Composition Made Thereby
Method for Making Zeolites and Zeolite Mixtures Having Enhanced Cation Exchange Properties
Method for Making Silica Supported, Crush-Resistant Catalysts
Composition of, and Process for Using, Silica Xerogel for Beer Stabilization
Preparation of Molecular Sieves Involving Spray Drying
Wood-Polymer-Zeolite Composites
Composition of, and Process for Preparing, Silica Xerogel for Beer Stabilization
Novel Microporous Crystalline Material Comprising a Molecular Sieve or Zeolite Having an 8-Ring Pore Opening Structure and Methods of Making and Using Same
Novel Iron-Containing Aluminosilicate Zeolites and Methods of Making and Using Same
Novel Microporous Crystalline Material Comprising a Molecular Sieve or Zeolite Having an 8-Ring Pore Opening Structure and Methods of Making and Using Same
High Silica Chabazite for Selective Catalytic Reduction, Methods of Making and Using Same
Novel Iron-Containing Aluminosilicate Zeolites and Methods of Making and Using Same
NOVEL METAL-CONTAINING ZEOLITE BETA FOR NOx REDUCTION AND METHODS OF MAKING THE SAME
Application:
13/110,337 →
Publication:
US 2011/0286914
Mixtures of Zeolite and Rap/Ras
Zeolite and Water Slurries for Asphalt Concrete Pavement
Use of High Ratio Aqueous Alkali Silicates in Drilling Fluids
Fe-SAPO-34 CATALYST AND METHODS OF MAKING AND USING THE SAME
Application:
13/438,365 →
Publication:
US 2012/0251422
Large Crystal, Organic-Free Chabazite, Methods of Making and Using the Same
Application:
13/449,230 →
Publication:
US 2012/0269719
Zeolite Impregnated with Titanium Dioxide
Stabilized Microporous Crystalline Material, the Method of Making the Same, and the Use for Selective Catalytic Reduction of Nox
Stabilized Microporous Crystalline Material, the Method of Making the Same, and the Use for Selective Catalytic Reduction of Nox
Catalyst Supports, Catalysts and Their Manufacture and Use
Use of Aqueous Alkali Aluminosilicate for Profile Modification, Water Control and Stabilization
Small Crystal Ferrierite and Method of Making the Same
Preparation of Silica-Alumina Composition
Application:
14/132,801 →
Publication:
US 2014/0187411
Zeolite Y
STABILIZED MICROPOROUS CRYSTALLINE MATERIAL, THE METHOD OF MAKING THE SAME, AND THE USE FOR SELECTIVE CATALYTIC REDUCTION OF NOx
Silica Gel as a Viscosifier for Subterranean Fluid System
Application:
14/892,051 →
Publication:
US 2016/0090525
Self-Pressurizing Soluble Alkali Silicate for use in Sealing Subterranean Spaces
Application:
62/253,834 →
Related Assignments
(25)
Other recorded transfers of the patents in this record — the chain of ownership.
First Lien Grant of Security Interest in Patents Amendment No. 1
Apr 3, 2012
From: PQ CORPORATION
To: CREDIT SUISSE AG, AS SUCCESSOR AGENT
Reel/Frame 027980/0194 →
Second Lien Grant of Security Interest in Patents Amendment No. 1
Apr 3, 2012
From: PQ CORPORATION
To: CREDIT SUISSE AG, AS SUCCESSOR AGENT
Reel/Frame 027980/0219 →
Release of Security Interest in Patents
Nov 26, 2012
From: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH
To: PQ CORPORATION
Reel/Frame 029349/0592 →
Release of Security Interest in Patents
Nov 26, 2012
From: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH
To: PQ CORPORATION
Reel/Frame 029349/0556 →
Security Agreement
Nov 29, 2012
From: PQ CORPORATION; POTTERS INDUSTRIES, LLC
To: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS ADMINISTRATIVE AGENT
Reel/Frame 029370/0103 →
Security Agreement
Nov 30, 2012
From: PQ CORPORATION; POTTERS INDUSTRIES, LLC
To: WILMINGTON TRUST, NATIONAL ASSOCIATION, AS ADMINISTRATIVE AGENT
Reel/Frame 029377/0878 →
Release of Security Interest
May 4, 2016
From: WILMINGTON TRUST, NATIONAL ASSOCIATION, AS ADMINISTRATIVE AGENT
To: PQ CORPORATION; POTTERS INDUSTRIES, LLC
Reel/Frame 038611/0927 →
Release of Security Interest
May 5, 2016
From: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS ADMINISTRATIVE AGENT
To: PQ CORPORATION; POTTERS INDUSTRIES, LLC
Reel/Frame 038612/0222 →
Patent Security Agreement (Abl)
Jun 1, 2016
From: PQ CORPORATION
To: CITIBANK, N.A., AS COLLATERAL AGENT
Reel/Frame 038861/0071 →
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 (Term)
Jun 1, 2016
From: PQ CORPORATION
To: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS COLLATERAL AGENT
Reel/Frame 038860/0900 →
Security Interest
Jul 22, 2020
From: PQ CORPORATION
To: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS COLLATERAL AGENT
Reel/Frame 053281/0474 →
Term Loan Patent Security Agreement
Jun 10, 2021
From: PQ CORPORATION
To: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS AGENT
Reel/Frame 056539/0903 →
Release of Security Interest in Patents at R/F 053281/0474
Jun 10, 2021
From: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS COLLATERAL AGENT
To: PQ CORPORATION
Reel/Frame 056539/0782 →
Assignment of Assignor's Interest
Aug 3, 2021
From: PQ CORPORATION
To: ECOVYST CATALYST TECHNOLOGIES LLC
Reel/Frame 057140/0261 →
Partial Release of Security Interest in Patents Recorded at R/F 056539/0903
Aug 5, 2021
From: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS ADMINISTRATIVE AGENT
To: PQ CORPORATION
Reel/Frame 057089/0255 →
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 →
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 →
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 →
Abl Patent Security Agreement
Aug 13, 2021
From: ECOVYST CATALYST TECHNOLOGIES LLC
To: CITIBANK, N.A., AS AGENT
Reel/Frame 057182/0449 →
Term Loan Patent Security Agreement
Aug 13, 2021
From: ECOVYST CATALYST TECHNOLOGIES LLC
To: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS ADMINISTRATIVE AGENT
Reel/Frame 057182/0552 →
Change of Name
Dec 2, 2021
From: PQ CORPORATION
To: PQ LLC
Reel/Frame 058295/0836 →
Merger
Jul 15, 2024
From: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS COLLATERAL AGENT
To: UBS AG, STAMFORD BRANCH, AS COLLATERAL AGENT
Reel/Frame 068321/0831 →
Confirmation of Division
Dec 22, 2025
From: ECOVYST CATALYST TECHNOLOGIES LLC
To: ECOVYST US CATALYSTS LLC
Reel/Frame 074023/0497 →
Term Loan Patent Security Agreement
Dec 23, 2025
From: ECOVYST US CATALYSTS LLC
To: UBS AG, STAMFORD BRANCH, AS COLLATERAL AGENT
Reel/Frame 074050/0311 →