Patent Assignment
Reel/Frame 012943/0911
Assignment of Assignor's Interest
Recorded: 2002-05-31
Pages: 2
Assignors
GRIFFIN, NIGEL DENNIS
Executed: 2002-04-29
HUGHES, PETER R.
Executed: 2002-04-29
MATTHIAS, TERRY R.
Executed: 2002-04-29
Assignee
CAMCO INTERNATIONAL (UK) LIMITED
OLDENDS INDUSTRIAL ESTATE, STONEHOUSE, GLOUCESTERSHIRE, GL10, UNITED KINGDOM
Covered Property
(1)
Polycrystalline Diamond Cutters with Working Surfaces Having Varied Wear Resistance While Maintaining Impact Strength
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Grant of Patent (Security Agreement)
Jan 6, 2003
From: REED-HYCALOG OPERATING, L.P.
To: DEUTSCHE BANK TRUST COMPANY AMERICAS
Reel/Frame 013336/0691 →
Assignment of Assignor's Interest
Dec 3, 2003
From: CAMCO INTERNATIONAL (UK) LIMITED
To: REEDHYCALOG UK LTD.
Reel/Frame 014743/0406 →
Release of Grant of Patent Security Agreement
Jun 1, 2005
From: DEUTSCHE BANK TRUST COMPANY AMERICAS
To: REED-HYCALOG OPERATING, L.P.
Reel/Frame 016079/0429 →