Patent Assignment
Reel/Frame 004182/0937
Assignment of Assignors Interest.
Recorded: 1983-10-05
Pages: 3
Assignee
Covered Property
(1)
Subsurface Safety Valve
Patent:
4,552,219 →
Application:
06/539,333 →
Related Assignments
(5)
Other recorded transfers of the patent in this record — the chain of ownership.
Security Interest
Apr 21, 1998
From: HYDRIL COMPANY
To: CHASE BANK OF TEXAS, NATIONAL ASSOC., AS AGENT
Reel/Frame 009123/0016 →
Assignment and Security Agreement
Dec 21, 1999
From: EMPLAST, INC., A MINNESOTA CORPORATION
To: MARQUETTE CAPITAL BANK, N.A.
Reel/Frame 010452/0632 →
Assignment of Assignor's Interest
Sep 23, 2003
From: HYDRIL COMPANY
To: HYDRIL COMPANY LP
Reel/Frame 014499/0197 →
Assignment of Assignor's Interest
Dec 2, 2003
From: HYDRIL COMPANY
To: HYDRIL COMPANY LP
Reel/Frame 014763/0830 →
Release of Lien
Jun 16, 2004
From: CHASE BANK OF TEXAS, NATIONAL ASSOCIATION
To: HYDRIL COMPANY
Reel/Frame 014734/0860 →