IP Library Assignment 016542/0205
Patent Assignment
Reel/Frame 016542/0205

Assignment of Assignor's Interest

Recorded: 2005-09-15 Pages: 4
Assignors
RINGGENBERG, PAUL
Executed: 2005-07-21
SIERRA, JOSE
Executed: 2005-09-13
Assignee
HALLIBURTON ENERGY SERVICES, INC.
10200 BELLAIRE BOULEVARD, HOUSTON, TEXAS, 77072
Covered Property (1)
Safety Valve Apparatus for Downhole Pressure Transmission Systems
Patent: 7,325,597 →
Application: 11/182,641 →
Publication: US 2007/0012434
Related Assignments (2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest Jan 18, 2007
From: HALLIBURTON ENERGY SERVICES, INC.
To: WELLDYNAMICS, B.V.
Reel/Frame 018767/0859 →
Assignment of Assignor's Interest Sep 5, 2007
From: HALLIBURTON ENERGY SERVICES, INC.
To: WELLDYNAMICS, B.V.
Reel/Frame 019781/0406 →