Patent Assignment
Reel/Frame 007558/0312
Assignment of Assignor's Interest
Recorded: 1995-07-21
Pages: 7
Assignor
PRIDECO, INC.
Executed: 1995-07-07
Assignee
GRANT TFW, INC.
363 N SAM HOUSTON PARKWAY E., SUITE 1660, HOUSTON, TEXAS, 77060
Covered Properties
(6)
Method of Horizontal Drilling
Patent:
5,165,491 →
Application:
07/692,620 →
Lightweight Drill Pipe
Patent:
5,148,876 →
Application:
07/712,529 →
Method of Internally and Externally Upsetting the End of a Metal Tube
Patent:
5,184,495 →
Application:
07/801,969 →
Stress Relief Groove for Drill Pipe
Patent:
5,286,069 →
Application:
07/985,832 →
Stress Relief Groove for Drill Pipe
Patent:
5,358,285 →
Application:
08/182,211 →
Method and Apparatus for Measuring the Length (Miu) of the Internal Taper of an Internally Upset Drill Pipe Tube
Patent:
5,479,721 →
Application:
08/220,281 →
Related Assignments
(14)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignors Interest.
Apr 29, 1991
From: WILSON, GERALD E.
To: PRIDECO, INC., A CORPORATION OF TX
Reel/Frame 005694/0501 →
Assignment of Assignors Interest.
Jun 10, 1991
From: WILSON, GERALD E.
To: PRIDECO, INC. A CORP. OF TEXAS
Reel/Frame 005738/0098 →
Assignment of Assignors Interest.
Dec 3, 1991
From: CHUNN, WILLIAM G.; MOORE, RALPH T.
To: PRIDECO, INC., A CORP. OF TEXAS
Reel/Frame 005937/0020 →
Assignment of Assignors Interest.
Dec 3, 1992
From: WILSON, GERALD E.
To: PRIDECO, INC.
Reel/Frame 006333/0806 →
Assignment of Assignor's Interest
Jan 13, 1994
From: WILSON, GERALD E.
To: PRIDECO, INC.
Reel/Frame 006848/0674 →
Assignment of Assignor's Interest
Mar 30, 1994
From: WICKANDER, NELS
To: PRIDECO, INC.
Reel/Frame 006935/0611 →
Security Interest
Apr 4, 1994
From: PRIDECO, INC.
To: BANKAMERICA BUSINESS CREDIT, INC.
Reel/Frame 006932/0885 →
Change of Name
Jan 8, 2001
From: GRANT TFW, INC.
To: GRANT PRIDECO, INC.
Reel/Frame 011436/0249 →
Assignment of Assignor's Interest
Jan 17, 2001
From: GRANT PRIDECO, INC.
To: GRANT PRIDECO, L.P.
Reel/Frame 011449/0400 →
Grant of Patent
Jan 3, 2003
From: GRANT PRIDECO, L.P.
To: DEUTSCHE BANK TRUST COMPANY AMERICAS
Reel/Frame 013333/0021 →
Release of Grant of Patent Security Agreement
Jun 1, 2005
From: DEUTSCHE BANK TRUST COMPANY AMERICAS
To: GRANT PRIDECO, L.P.
Reel/Frame 016079/0694 →
Security Agreement
Jun 3, 2005
From: GRANT PRIDECO, L.P.
To: WELLS FARGO BANK
Reel/Frame 016087/0629 →
Release of Patent Security Agreement
Sep 18, 2006
From: WELLS FARGO BANK
To: GRANT PRIDECO, L.P.
Reel/Frame 018268/0796 →
Release of Patent Security Agreement
Sep 18, 2006
From: WELLS FARGO BANK
To: GRANT PRIDECO, L.P.
Reel/Frame 018279/0119 →