Patent Assignment
Reel/Frame 036855/0306
Assignment of Assignor's Interest
Recorded: 2015-10-22
Pages: 7
Assignors
HAN, XIAOGANG
Executed: 2015-09-25
SMITH, HARRY D., JR.
Executed: 2015-09-23
DUENCKEL, ROBERT
Executed: 2015-10-01
ZHANG, QIANMEI (JEREMY)
Executed: 2015-09-23
Assignee
CARBO CERAMICS INC.
575 N. DAIRY ASHFORD, SUITE 300, HOUSTON, TEXAS, 77079
Covered Property
(1)
Identification of Proppant in Subterranean Fracture Zones Using a Ratio of Capture to Inelastic Gamma Rays
Related Assignments
(2)
Other recorded transfers of the patent in this record — the chain of ownership.
Patent Security Agreement
Apr 28, 2016
From: CARBO CERAMICS INC.; FALCON TECHNOLOGIES AND SERVICES, INC.; STRATAGEN, INC.
To: WELLS FARGO BANK, NATIONAL ASSOCIATION
Reel/Frame 038555/0688 →
Release of Security Interest
Mar 3, 2017
From: WELLS FARGO BANK, NATIONAL ASSOCIATION
To: CARBO CERAMICS INC.; ASSET GUARD PRODUCTS INC. (F/K/A FALCON TECHNOLOGIES AND SERVICES, INC.); STRATAGEN, INC.
Reel/Frame 041879/0930 →