Patent Assignment
Reel/Frame 021900/0399
Assignment of Assignor's Interest
Recorded: 2008-11-29
Pages: 4
Assignors
DVORKIN, JACK
Executed: 2008-11-20
DERZHI, NAUM
Executed: 2008-11-20
ARMBRUSTER, MEGHAN
Executed: 2008-11-20
FANG, QIAN
Executed: 2008-11-20
WOJCIK, ZBIGINEW
Executed: 2008-11-20
Assignee
INGRAIN, INC.
3733 WESTHEIMER RD., SUITE 200, HOUSTON, TEXAS, 77027
Covered Property
(1)
Method for Determining Permeability of Rock Formation Using Computer Tomograpic Images Thereof
Related Assignments
(5)
Other recorded transfers of the patent in this record — the chain of ownership.
Security Interest
Jan 23, 2015
From: INGRAIN, INC.
To: COMERICA BANK
Reel/Frame 034797/0255 →
Security Interest
Sep 1, 2016
From: INGRAIN, INC.
To: GEMCAP LENDING I, LLC
Reel/Frame 039973/0886 →
Release of Security Interest
Jul 5, 2017
From: COMERICA BANK
To: INGRAIN, INC.
Reel/Frame 042900/0176 →
Release of Security Interest
Jul 5, 2017
From: GEMCAP LENDING I, LLC
To: INGRAIN, INC.
Reel/Frame 043090/0263 →
Assignment of Assignor's Interest
Sep 6, 2018
From: INGRAIN, INC.
To: HALLIBURTON ENERGY SERVICES, INC.
Reel/Frame 047024/0084 →