Patent Assignment
Reel/Frame 004562/0522
Assignment of Assignors Interest.
Recorded: 1986-05-28
Pages: 2
Assignors
HAUCK, MICHAEL L.
Executed: 1986-05-23
HOLBROOK, PHIL
Executed: 1986-05-23
ROBERTSON, HOMER A.
Executed: 1986-05-23
HAUCK, MICHAEL L.
Executed: 1986-05-23
Assignee
NL INDUSTRIES, INC.
1230 AVENUE OF AMERICAS, A CORP. OF NEW JERSEY, NEW YORK, NEW YORK
Covered Property
(1)
Method for Determining Pore Pressure and Horizontal Effective Stress from Overburden and Effective Vertical Stresses
Patent:
4,981,037 →
Application:
06/868,317 →
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Security Interest
Mar 8, 1989
From: BAROID CORPORATION, A CORP. OF DE.
To: CHASE MANHATTAN BANK (NATIONAL ASSOCIATION), THE
Reel/Frame 005196/0501 →
Released by Secured Party
May 7, 1992
From: CHASE MANHATTAN BANK, THE
To: BAROID CORPORATION
Reel/Frame 006085/0590 →
Assignment of Assignor's Interest
Mar 18, 2003
From: BAROID TECHNOLOGY, INC.
To: HALLIBURTON ENERGY SERVICES, INC.
Reel/Frame 013821/0799 →