Patent Assignment
Reel/Frame 008864/0886
Assignment of Assignor's Interest
Recorded: 1997-12-12
Pages: 3
Assignor
ENERGY, UNITED STATES DEPARTMENT OF
Executed: 1996-12-16
Assignee
GAS RESEARCH INSTITUTE
8600 WEST BRYN MAWR AVE., CHICAGO, ILLINOIS, 60631
Covered Property
(1)
High Speed Point Derivative Microseismic Detector
Patent:
5,774,419 →
Application:
08/665,471 →
Related Assignments
(4)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Sep 9, 2005
From: GAS RESEARCH INSTITUTE
To: PINNACLE TECHNOLOGIES, INC.
Reel/Frame 016500/0829 →
Assignment of Assignor's Interest
Jan 17, 2006
From: GAS RESEARCH INSTITUTE
To: GAS TECHNOLOGY INSTITUTE
Reel/Frame 017448/0282 →
Assignment of Assignor's Interest
Feb 20, 2009
From: GAS TECHNOLOGY INSTITUTE
To: PINNACLE TECHNOLOGIES, INC.
Reel/Frame 022309/0036 →
Assignment of Assignor's Interest
Apr 6, 2009
From: PINNACLE TECHNOLOGIES, INC.
To: HALLIBURTON ENERGY SERVICES, INC.
Reel/Frame 022520/0919 →