Patent Assignment
Reel/Frame 004296/0042
Assignment of Assignors Interest.
Recorded: 1984-05-18
Pages: 1
Assignee
NL INDUSTRIES, INC.
1230 AVENUE OF THE AMERICAS,, NEW YORK,, NEW YORK
Covered Property
(1)
Method for Optimizing the Tripping Velocity of a Drill String
Patent:
4,566,318 →
Application:
06/595,284 →
Related Assignments
(4)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest.
Feb 14, 1988
From: NL INDUSTRIES, INC., A NJ CORP.
To: BAROID TECHNOLOGY, INC.
Reel/Frame 005091/0020 →
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 →