IP Library › Assignment 026936/0171
Patent Assignment
Reel/Frame 026936/0171

Assignment of Assignor's Interest

Recorded: 2011-09-20 Pages: 4
Assignors
SMITH, HARRY D., JR.
Executed: 2011-09-17
DUENCKEL, ROBERT
Executed: 2011-09-19
Assignee
CARBO CERAMICS INC.
575 N. DAIRY ASHFORD ROAD, SUITE 300, HOUSTON, TEXAS, 77079
Covered Property (1)
Spectral Identification of Proppant in Subterranean Fracture Zones
Patent: 8,648,309 →
Application: 13/237,406 →
Publication: US 2012/0080588
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 →