Patent Assignment
Reel/Frame 009837/0798
Assignment of Assignor's Interest
Recorded: 1999-03-08
Pages: 5
Assignee
GAS RESEARCH INSTITUTE
8600 WEST BRYN MAWR AVENUE, CHICAGO, ILLINOIS, 60631
Covered Property
(1)
Apparatus and Method for Monitoring Underground Fracturing
Patent:
5,934,373 →
Application:
08/790,292 →
Related Assignments
(7)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Jan 22, 1999
From: WARPINSKI, NORMAN R.; STEINFORT, TERRY D.
To: SANDIA NATIONAL LABORATORIES
Reel/Frame 009976/0748 →
Assignment of Assignor's Interest
Mar 8, 1999
From: SANDIA CORPORATION
To: GAS RESEARCH INSTITUTE
Reel/Frame 009838/0448 →
Confirmatory License
Dec 13, 2004
From: SANDIA CORPORATION
To: U.S. DEPARTMENT OF ENERGY
Reel/Frame 015451/0693 →
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 →