IP Library › Assignment 015493/0279
Patent Assignment
Reel/Frame 015493/0279

Assignment of Assignor's Interest

Recorded: 2004-06-15 Pages: 2
Assignor
HUGHES. W. JAMES
Executed: 2004-05-28
Assignee
SUNSTONE CORPORATION
101 N. ROBINSON, SUITE 810, OKLAHOMA CITY, OKLAHOMA, 73102
Covered Property (1)
Method and Apparatus for Inducing Under Balanced Drilling Conditions Using an Injection Tool Attached to a Concentric String of Casing
Patent: 6,769,498 →
Application: 10/198,833 →
Publication: US 2004/0011561
Related Assignments (4)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest Jan 22, 2009
From: SUNSTONE CORPORATION
To: SUNSTONE TECHNOLOGIES, LLC
Reel/Frame 022137/0199 →
Security Agreement Feb 19, 2014
From: SUNSTONE TECHNOLOGIES, LLC
To: SUNSTONE ENERGY GROUP, LLC
Reel/Frame 032276/0699 →
Amendment to Security Agreement Feb 19, 2014
From: SUNSTONE TECHNOLOGIES, LLC
To: SUNSTONE ENERGY GROUP, LLC
Reel/Frame 032276/0771 →
Notice of Lender Name Change Aug 18, 2017
From: SUNSTONE ENERGY GROUP, LLC
To: BLACK OAK ENERGY HOLDINGS, LLC
Reel/Frame 044102/0017 →