Patent Assignment
Reel/Frame 019404/0094
Assignment of Assignor's Interest
Recorded: 2007-06-08
Pages: 12
Assignors
HUGHES, WILLIAM JAMES
Executed: 2007-04-27
RICHARDSON, MURL RAY
Executed: 2007-05-04
PETTIGREW, THOMAS L.
Executed: 2007-04-30
VANDERVORT, KURT D.
Executed: 2007-04-30
YOUNG, KENNETH D.
Executed: 2007-04-27
Assignee
SUNSTONE CORPORATION
101 N. ROBINSON, SUITE #810, OKLAHOMA CITY, OKLAHOMA, 73102
Covered Property
(1)
Force Balanced Rotating Pressure Control Device
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 →