IP Library › Assignment 005366/0664
Patent Assignment
Reel/Frame 005366/0664

Merger

Recorded: 1990-07-09 Pages: 12
Assignor
Assignee
Covered Properties (107)
Piston Actuated Well Safety Valve
Patent: 4,161,219 →
Application: 05/881,484 →
Method of and Apparatus for Measuring Bottom Hole Well Pressure
Patent: 4,159,643 →
Application: 05/929,154 →
Lockout for a Well Injection Valve
Patent: 4,215,748 →
Application: 06/002,650 →
Multiple Flow Valves and Sidepocket Mandrel
Patent: 4,239,082 →
Application: 06/023,061 →
Piston Actuated Well Safety Valve
Patent: 4,252,197 →
Application: 06/027,207 →
Externally Adjusted Spring Actuated Well Valve
Patent: 4,248,308 →
Application: 06/033,596 →
Well Locking Device
Patent: 4,254,829 →
Application: 06/078,112 →
Void-Free Electrical Conductor for Power Cables and Process for Making Sam
Patent: 4,319,074 →
Application: 06/079,280 →
Annular Flow Control Safety Valve
Patent: 4,273,194 →
Application: 06/120,439 →
Hydraulic Set and Straight Pull Release Well Packer
Patent: 4,263,968 →
Application: 06/129,454 →
Subsurface Conduit Setting and Pulling Tool
Patent: 4,368,911 →
Application: 06/183,117 →
Drill Bit and Method of Manufacture
Patent: 4,350,215 →
Application: 06/189,370 →
Mechanical Tubing Anchor
Patent: 4,336,841 →
Application: 06/207,161 →
Fluid Displacement Well Safety Valve
Patent: 4,373,587 →
Application: 06/214,069 →
Tubing Retrievable Variable Setting Differential Pressure Actuated Well Safety Valve
Patent: 4,362,214 →
Application: 06/226,295 →
Drill Bit and Method of Metallurgical and Mechanical Holding of Cutters in a Drill Bit
Patent: 4,453,605 →
Application: 06/259,182 →
Apparatus for Measuring Bottom Hole Well Conditions
Patent: 4,415,028 →
Application: 06/300,087 →
Metal-To-Metal High/Low Pressure Seal
Patent: 4,452,310 →
Application: 06/322,318 →
Control Fluid Communication Nipple
Patent: 4,460,046 →
Application: 06/440,667 →
Drill Bit
Patent: 4,505,342 →
Application: 06/443,657 →
Method and Apparatus of Sealing Threaded Sections of a Well Tool
Patent: 4,538,838 →
Application: 06/450,943 →
Deep Set Piston Actuated Well Safety Valve
Patent: 4,444,266 →
Application: 06/463,462 →
Pdc Cutter and Bit
Patent: 4,538,690 →
Application: 06/468,668 →
Drag Bit and Cutters
Patent: 4,558,753 →
Application: 06/468,669 →
Grease Injection Control Head Having a Specific Gas Trap
Patent: 4,476,924 →
Application: 06/472,827 →
Shearable No Go Insert for a Well Lock
Patent: 4,457,368 →
Application: 06/478,741 →
Locking Annulus Safety Valve
Patent: 4,538,685 →
Application: 06/540,080 →
Hydraulic Control Fluid Communication Nipple
Patent: 4,534,414 →
Application: 06/565,324 →
Hydraulic Controlled Well Valve
Patent: 4,524,831 →
Application: 06/565,506 →
Low Profile Submersible Electrical Cable
Patent: 4,515,993 →
Application: 06/571,315 →
Drill Bit Manufacturing Method
Patent: 4,605,157 →
Application: 06/575,555 →
Drill Bit Cutter
Patent: 4,570,725 →
Application: 06/575,556 →
Drill Bit and Cutter Therefor
Patent: 4,640,375 →
Application: 06/578,182 →
Drag Bit and Cutters
Patent: 4,593,777 →
Application: 06/578,183 →
Integrally Formed Sidepocket Mandrel
Patent: 4,553,310 →
Application: 06/584,048 →
Piston Actuated High Temperature Well Packer
Patent: 4,531,581 →
Application: 06/587,477 →
Fluid Actuated Energy Charged Well Service Line Cutter
Patent: 4,512,411 →
Application: 06/601,896 →
Pressure Charged Low Spread Safety Valve
Patent: 4,676,307 →
Application: 06/612,271 →
Offset Open Bore Sidepocket Mandrel
Patent: 4,541,482 →
Application: 06/624,074 →
Hydraulically Actuated Control Fluid Communication Nipple
Patent: 4,566,540 →
Application: 06/624,431 →
Flat Submersible Electrical Cable
Patent: 4,600,805 →
Application: 06/638,150 →
Balance Line Hydraulically Operated Well Safety Valve
Patent: 4,621,695 →
Application: 06/644,183 →
Fluid Level Controlled Safety Valve
Patent: 4,721,162 →
Application: 06/645,574 →
Method and Apparatus for Stopping Well Production
Patent: 4,585,067 →
Application: 06/645,575 →
Nipple Protector Sleeve for Use in a Well Conduit
Patent: 4,577,685 →
Application: 06/645,982 →
Expandable Metal Seal for a Well Tool
Patent: 4,588,029 →
Application: 06/655,388 →
Piston Actuated Chemical Injection Valve
Patent: 4,562,854 →
Application: 06/655,480 →
Well Tool Having a Metal Seal and Bi-Directional Lock
Patent: 4,588,030 →
Application: 06/655,481 →
Fail-Safe Well Safety Valve and Method
Patent: 4,598,773 →
Application: 06/678,125 →
Soft Set and Pull Latch and Setting Tool for a Well Measuring Instrument
Patent: 4,538,681 →
Application: 06/681,049 →
Drill Bit and Cutter Therefor
Patent: 4,669,556 →
Application: 06/693,848 →
Solenoid Actuated Well Safety Valve
Patent: 4,566,534 →
Application: 06/697,544 →
Subsurface Solenoid Latched Safety Valve
Patent: 4,579,177 →
Application: 06/702,295 →
Well Subsurface Safety Valve
Patent: 4,597,445 →
Application: 06/702,980 →
Method and Apparatus for Locking a Subsurface Safety Valve in the Open Position
Patent: 4,574,889 →
Application: 06/710,642 →
Subsurface Well Safety Valve
Patent: 4,569,398 →
Application: 06/711,706 →
Flexible Piston Well Safety Valve
Patent: 4,601,341 →
Application: 06/713,080 →
Redundant Safety Valve System and Method
Patent: 4,605,070 →
Application: 06/718,628 →
Rotary Drill Bits
Patent: 4,718,505 →
Application: 06/754,506 →
Control Line Protector for Use on a Well Tubular Member
Patent: 4,616,704 →
Application: 06/759,384 →
Drag Type Drill Bit
Patent: 4,660,659 →
Application: 06/763,031 →
Combination Electrically Operated Solenoid Safety Valve and Measuring Sensor
Patent: 4,649,993 →
Application: 06/776,065 →
Dual Metal Seal for a Well Safety Valve
Patent: 4,583,596 →
Application: 06/776,066 →
Hydraulic Actuating Means for Subsurface Safety Valve
Patent: 32,390 →
Application: 06/782,783 →
Equalizing Means for a Subsurface Well Safety Valve
Patent: 4,629,002 →
Application: 06/789,234 →
Failsafe Gas Closed Safety Valve
Patent: 4,660,646 →
Application: 06/802,656 →
Well Reverse Flow Check Valve
Patent: 4,688,593 →
Application: 06/809,645 →
Drill Bit and Cutter Therefor
Patent: 4,676,324 →
Application: 06/823,681 →
Dump and Kill Valve for a Sidepocket Mandrel
Patent: 4,651,822 →
Application: 06/855,194 →
Retrievable Well Safety Valve with Expandable External Seals
Patent: 4,691,776 →
Application: 06/868,916 →
Drill Bit and Method of Manufacture
Patent: 4,711,144 →
Application: 06/870,075 →
High Temperature Subsurface Safety Valve
Patent: 4,669,547 →
Application: 06/871,958 →
Rotary Drill Bits
Patent: 4,727,946 →
Application: 06/876,847 →
Rotary Drill Bits for Use in Coring Holes in Subsurface Formations
Patent: 4,790,396 →
Application: 06/879,137 →
Well Packer with Releasable Head and Method of Releasing
Patent: 4,688,641 →
Application: 06/889,539 →
Equalizing Means for a Subsurface Well Safety Valve
Patent: 4,703,805 →
Application: 06/911,832 →
Circulating Kill Valve
Patent: 4,724,908 →
Application: 06/915,220 →
Method and Apparatus of Injecting Fluid into a Well Conduit by Coil Tubing
Patent: 4,694,908 →
Application: 06/923,452 →
An Electrical Conductor Insulated with Insulating and Jacketing Material Having Improved Resistance to Hot Fluids and Gases
Patent: 4,806,424 →
Application: 06/924,884 →
An Electrical Conductor Insulated with Insulating and Jacketing Material Having Improved Physical Properties
Patent: 4,816,337 →
Application: 06/924,936 →
Method of and Apparatus for Injection of Steam into Multiple Well Zones
Patent: 4,711,304 →
Application: 06/941,671 →
Variable Fluid Passageway for a Well Tool
Patent: 4,709,762 →
Application: 06/941,973 →
Hydraulic Valve Actuating Means for Subsurface Safety Valve
Patent: 4,716,969 →
Application: 07/002,323 →
Double Seated Well Valve
Patent: 4,716,968 →
Application: 07/002,350 →
Pump-Out Plug System for a Well Conduit
Patent: 4,718,488 →
Application: 07/024,950 →
Self Closing Equalizing Valve for a Subsurface Well Safety Valve
Patent: 4,722,399 →
Application: 07/024,957 →
Drill Bit and Cutter Therefor
Patent: 4,862,977 →
Application: 07/033,072 →
Pipeline Safety Valve
Patent: 4,768,539 →
Application: 07/098,444 →
Liquid Level Actuated Sleeve Valve
Patent: 4,771,831 →
Application: 07/106,466 →
Choke and Kill Control System
Patent: 4,760,879 →
Application: 07/126,137 →
Subsurface Well Safety Valve with Hydraulic Strainer
Patent: 4,791,991 →
Application: 07/164,697 →
Threadless Well Tool and Method of Making
Patent: 4,862,965 →
Application: 07/202,350 →
Method and Apparatus for Recompleting Wells with Coil Tubing
Patent: 4,844,166 →
Application: 07/205,762 →
Dual Hydraulic Safety Valve
Patent: 4,838,355 →
Application: 07/242,747 →
Large Bore Retrievable Well Safety Valve
Patent: 4,854,387 →
Application: 07/255,818 →
Coil Tubing Fluid Power Actuating Tool
Patent: 4,862,958 →
Application: 07/268,129 →
Method and Apparatus for Stimulating Hydraulically Pumped Wells
Patent: 4,865,131 →
Application: 07/297,274 →
Method of Plugging Openings in Well Conduits
Patent: 4,869,321 →
Application: 07/308,485 →
Backup for a Clamp Crimper
Patent: 4,884,432 →
Application: 07/313,110 →
Safety Valve
Patent: 4,860,991 →
Application: 07/334,035 →
Subsurface Well Safety Valve with Curved Flapper and Method of Making
Patent: 4,926,945 →
Application: 07/404,241 →
Subsurface Well Safety Valve with Light Weight Components
Patent: 4,977,957 →
Application: 07/415,677 →
A Method of Making a Subsurface Well Safety Valve
Patent: 4,983,803 →
Application: 07/448,429 →
Foam Breaker and Method
Patent: 5,015,273 →
Application: 07/494,704 →
Well Tool Having a Variable Area Hydraulic Actuator
Patent: 4,986,357 →
Application: 07/506,313 →
Flapper Mount for Well Safety Valve
Patent: 4,986,358 →
Application: 07/509,531 →
Well Landing Nipple and Method of Operation
Patent: 4,997,043 →
Application: 07/519,194 →
Related Assignments (18)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignors Interest. Sep 2, 1980
From: PRINGLE RONALD E.
To: CAMCO, INCORPORATED
Reel/Frame 003799/0320 →
Assignment of Assignors Interest. Nov 17, 1980
From: GARNER JAMES K. JR.
To: CAMCO, INCORPORATED, HOUSTON, TX., A CORP. OF
Reel/Frame 003846/0698 →
Assignment of Assignors Interest. Dec 8, 1980
From: PRINGLE RONALD E.
To: CAMCO, INCORPORATED
Reel/Frame 003830/0886 →
Assignment of Assignors Interest. Jan 19, 1981
From: PRINGLE RONALD E.; MORRIS ARTHUR J.
To: CAMCO, INCORPORATED
Reel/Frame 003856/0646 →
Assignment of Assignors Interest. Apr 30, 1981
From: SHORT LOT W. JR.
To: NL INDUSTRIES, INC.
Reel/Frame 003882/0358 →
Assignment of Assignors Interest. Sep 8, 1981
From: WATKINS, FRED E.
To: CAMCO, INCORPORATED
Reel/Frame 003918/0249 →
Assignment of Assignors Interest. Nov 17, 1981
From: PRINGLE, RONALD E.; EATWELL, WILLIAM D.
To: CAMCO, INCORPORATED, A CORP. OF TEX.
Reel/Frame 003958/0633 →
Assignment of Assignors Interest. Nov 10, 1982
From: PRINGLE, RONALD E.
To: CAMCO, INCORPORATED
Reel/Frame 004069/0205 →
Assignment of Assignors Interest. Dec 20, 1982
From: PRINGLE, RONALD E.
To: CAMCO, INCORPORATED
Reel/Frame 004078/0899 →
Assignment of Assignors Interest. Feb 3, 1983
From: PRINGLE, RONALD E.
To: CAMCO, INCORPORATED,A CORP.OF TX
Reel/Frame 004092/0800 →
Assignment of Assignors Interest. Feb 22, 1983
From: SHORT, LOT W. JR.
To: NL INDUSTRIES, INC., 1230 AVENUE OF THE AMERICAS, A CORP. OF N.J.
Reel/Frame 004099/0096 →
Assignment of Assignors Interest. Mar 7, 1983
From: WINDERS, CARL E.; WATKINS, FRED E.
To: CAMCO, INCORPORATED, HOUSTON, TX., A CORP. OF TX.
Reel/Frame 004136/0546 →
Assignment of Assignors Interest. Mar 14, 1984
From: BARR, JOHN D.; FULLER, JOHN M.
To: NL INDUSTRIES, INC., A CORP OF NJ
Reel/Frame 004232/0119 →
Assignment of Assignors Interest. Mar 14, 1984
From: BARR, JOHN D.
To: NL INDUSTRIES, INC., A CORP OF NJ
Reel/Frame 004232/0112 →
Assignment of Assignors Interest. Dec 30, 1988
From: TRW INC.
To: CAMCO, INCORPORATED, 7030 ARDMORE STREET, HOUSTON, TEXAS 77054, A TX CORP.
Reel/Frame 004994/0518 →
Assignment of Assignors Interest. Jul 5, 1990
From: NL INDUSTRIES, INC.
To: CAMCO, INCORPORATED, A CORP. OF TX
Reel/Frame 005370/0475 →
Merger Oct 24, 2002
From: CAMCO INTERNATIONAL INC.
To: SCHLUMBERGER TECHNOLOGY CORPORATION
Reel/Frame 013417/0342 →
Assignment of Assignor's Interest Nov 22, 2002
From: SCHLUMBERGER TECHNOLOGY CORPORATION
To: REED HYCALOG OPERATING LP
Reel/Frame 013506/0905 →