IP Library › Assignment 006952/0762
Patent Assignment
Reel/Frame 006952/0762

Release of Security Interest and Collateral Reassignment.

Recorded: 1994-04-21 Pages: 18
Assignor
Assignee
NATIONAL-OILWELL
5555 SAN FELIPE, HOUSTON,, TEXAS, 77056
Covered Properties (56)
Buoyant Riser
Patent: 4,040,264 →
Application: 05/635,843 →
Production Gate Valve
Patent: 4,081,174 →
Application: 05/764,379 →
Gate Valve Design
Patent: 4,146,209 →
Application: 05/858,671 →
Hanger Apparatus for Suspending Pipes
Patent: 4,167,970 →
Application: 05/915,829 →
Hanger Apparatus for Suspending Pipes
Patent: 4,167,971 →
Application: 05/915,830 →
Hanger Apparatus for Suspending Pipes
Patent: 4,181,331 →
Application: 05/915,902 →
Articulated Deep Water Production System
Patent: 4,211,281 →
Application: 06/014,036 →
Method and Apparatus for Remote Installation and Servicing of Underwater Well Apparatus
Patent: 4,284,142 →
Application: 06/036,658 →
Bearing-Equipped Well Tool
Patent: 4,252,187 →
Application: 06/036,660 →
Remote Multiple String Well Completion
Patent: 4,262,748 →
Application: 06/067,733 →
Remote Multiple String Well Completion
Patent: 4,289,206 →
Application: 06/067,745 →
Hanger Apparatus for Suspending Pipes with Positive Retrieval Capability
Patent: 4,269,268 →
Application: 06/076,185 →
Underwater Well Installations and Handling String Joint Therefor
Patent: 4,340,117 →
Application: 06/120,044 →
Split Fastening Ring and Assemblies Employing Same
Patent: 4,317,587 →
Application: 06/120,045 →
Fastener and Devices in Which Load Supporting Members Are Secured Thereby
Patent: 4,319,773 →
Application: 06/120,046 →
Remotely Operated Coupling and Well Devices Employing Same
Patent: 4,298,064 →
Application: 06/120,047 →
Position Indicating Valves
Patent: 4,300,750 →
Application: 06/120,048 →
Latch Means for Well Tools and Components
Patent: 4,290,483 →
Application: 06/120,052 →
Method and Apparatus for Multiple Well Completion
Patent: 4,333,531 →
Application: 06/120,695 →
Tool for Remotely Determing the Position of a Device in an Underwater Well Assembly
Patent: 4,300,637 →
Application: 06/120,696 →
Method and Apparatus for Installing Multiple Pipe Strings in Underwater Wells
Patent: 4,298,067 →
Application: 06/120,851 →
Remotely Operated Underwater Tension Connector
Patent: 4,451,056 →
Application: 06/170,970 →
Remotely Releasable Connector
Patent: 4,429,902 →
Application: 06/188,584 →
Combination Connector and Flex Joint for Underwater Tension Elements
Patent: 4,432,670 →
Application: 06/192,739 →
Well Tool Orientation System with Remote Indicator
Patent: 4,319,637 →
Application: 06/204,938 →
Subsea Template Levelling System and Method
Patent: 4,408,932 →
Application: 06/221,398 →
Well Devices with Annulus Check Valve and Hydraulic By-Pass
Patent: 4,449,583 →
Application: 06/304,078 →
Remotely Actuated Cutting Assembly for Broken Underwater Guidelines
Patent: 4,746,246 →
Application: 06/311,261 →
Weight-Set Pack-Off Unit
Patent: 4,421,164 →
Application: 06/316,395 →
Dual Ring Casing Hanger
Patent: 4,460,042 →
Application: 06/316,397 →
Method and Apparatus for Installing and Connecting Underwater Flowlines
Patent: 4,472,080 →
Application: 06/326,328 →
Multiple Flowline Connector
Patent: 4,490,073 →
Application: 06/326,329 →
Remotely Operated Valve
Patent: 4,422,618 →
Application: 06/326,331 →
Apparatus for Connecting Underwater Flowlines
Patent: 4,472,081 →
Application: 06/326,333 →
Diverless Subsea Template Levelling System and Method
Patent: 4,445,807 →
Application: 06/328,791 →
Remotely Operated Tool for Performing Functions Under Water
Patent: 4,443,130 →
Application: 06/330,671 →
Method and Apparatus for Deep Underwater Well Drilling and Completion
Patent: 4,427,072 →
Application: 06/380,910 →
Apparatus for Connecting a Tension Member to an Under-Water Anchoring Base
Patent: 4,451,170 →
Application: 06/404,812 →
Releasable Guide Post Mount and Method for Recovering Guide Posts by Remote Operations
Patent: 4,439,068 →
Application: 06/422,091 →
Laterally Releasable Connection Between Outer Well Member and Template
Patent: 4,460,047 →
Application: 06/422,092 →
Subsea Well with Retrievable Piping Deck
Patent: 4,438,817 →
Application: 06/426,695 →
Method and Apparatus for Independent Support of Well Pipe Hangers
Patent: 4,550,782 →
Application: 06/446,995 →
Dual Ring Casing Hanger
Patent: 4,528,738 →
Application: 06/572,916 →
Method and Apparatus for Remotely Cutting Broken Underwater Guidelines
Patent: 4,557,628 →
Application: 06/594,418 →
Method and Apparatus for Sealing Between Two Concentric Members
Patent: 4,583,746 →
Application: 06/665,659 →
Remotely Installing a Tubular String
Patent: 4,797,029 →
Application: 06/934,285 →
Wellhead Body Lockdown and Method for Engaging Same
Patent: 4,697,828 →
Application: 06/935,462 →
Fail-Safe Gate Valve with Separated Actuators
Patent: 4,809,733 →
Application: 07/041,269 →
Wellhead Connection of Hydraulic Control Lines
Patent: 4,852,611 →
Application: 07/097,490 →
Subsea Well Hanger
Patent: 5,082,060 →
Application: 07/464,809 →
Connection Seal
Patent: 5,062,667 →
Application: 07/467,600 →
Releasable Latch Mechanism for Attaching an Actuator to a Valve
Patent: 5,081,909 →
Application: 07/554,058 →
Piston Assembly with Primary and Co-Centric Secondary Portions
Patent: 5,129,311 →
Application: 07/554,060 →
Connector Assembly with Detachable Sleeve
Patent: 5,149,143 →
Application: 07/698,359 →
Casing Suspension System
Patent: 5,127,478 →
Application: 07/753,013 →
Guide Post Latching Mechanism
Patent: 5,246,075 →
Application: 07/817,230 →
Related Assignments (4)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignors Interest. Sep 18, 1980
From: COWAN WILLIAM S.
To: ARMCO, INC.
Reel/Frame 003816/0419 →
Assignment of Assignors Interest. Oct 1, 1980
From: LAWSON JOHN E.
To: ARMCO, INC.
Reel/Frame 003820/0495 →
Security Interest Apr 6, 1993
From: NATIONAL-OILWELL
To: CITICORP USA, INC., AS COLLATERAL AGENT
Reel/Frame 006486/0856 →
Assignment of Assignor's Interest Apr 21, 1994
From: NATIONAL - OILWELL
To: KVAERNER NATIONAL, INC.
Reel/Frame 006952/0738 →