IP Library › Assignment 023551/0144
Patent Assignment
Reel/Frame 023551/0144

Assignment of Assignor's Interest

Recorded: 2009-11-20 Pages: 5
Assignors
RUSH, DAVID JOHN
Executed: 2009-11-18
GONZALEZ, JUAN LEAL
Executed: 2009-11-10
Assignee
UNIMIN CORPORATION
258 ELM STREET, NEW CANAAN, CONNECTICUT, 06840
Covered Property (1)
Method of Making Proppant Used in Gas or Oil Extraction
Patent: 8,022,019 →
Application: 12/622,900 →
Publication: US 2010/0197532
Related Assignments (4)
Other recorded transfers of the patent in this record — the chain of ownership.
Change of Name Aug 9, 2018
From: UNIMIN CORPORATION
To: COVIA HOLDINGS CORPORATION
Reel/Frame 046757/0764 →
Security Interest Aug 27, 2018
From: COVIA HOLDINGS CORPORATION; FAIMOUNT SANTROL INC.; TECHNISAND, INC.; SELF-SUSPENDING PROPPANT LLC
To: BARCLAYS BANK PLC, AS COLLATERAL AGENT
Reel/Frame 047320/0483 →
Security Interest Oct 19, 2020
From: BARCLAYS BANK PLC
To: WILMINGTON SAVINGS FUND SOCIETY, FSB
Reel/Frame 054113/0352 →
Release of Security Interest Jan 1, 2021
From: WILMINGTON SAVINGS FUND SOCIETY, FSB
To: COVIA HOLDINGS LLC (FORMERLY COVIA HOLDINGS CORPORATION)
Reel/Frame 054886/0318 →