IP Library › Assignment 011676/0301
Patent Assignment
Reel/Frame 011676/0301

Assignment of Assignor's Interest

Recorded: 2001-03-29 Pages: 2
Assignor
STAUDT, JOHN J.
Executed: 2001-03-27
Assignee
HUNTING OILFIELD SERVICES, INC.
15355 VINTAGE PARKWAY WEST, SUITE 100, HOUSTON, TEXAS, 77032
Covered Property (1)
Method for Preventing Critical Annular Pressure Buildup
Patent: 6,457,528 →
Application: 09/821,251 →
Publication: US 2002/0139536
Related Assignments (3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest Oct 21, 2002
From: HUNTING OILFIELD SERVICES, INC.
To: HUNTING ENERGY SERVICES, L.P.
Reel/Frame 013403/0789 →
Merger Jul 26, 2007
From: HUNTING ENERGY SERVICES , L.P.
To: HUNTING ENERGY SERVICES, INC.
Reel/Frame 019605/0718 →
Nunc Pro Tunc Assignment Sep 24, 2019
From: HUNTING ENERGY SERVICES I, INC.
To: HUNTING ENERGY SERVICES, LLC
Reel/Frame 050472/0840 →