USPTO Assignments on the Web

	United States Patent and Trademark Office
	Home\|Site Index\|Search\|Guides\|Contacts\|eBusiness\|eBiz alerts\|News\|Help

Assignments on the Web > Patent Query

Patent Assignment Details

NOTE:Results display only for issued patents and published applications. For pending or abandoned applications please consult USPTO staff.

Reel/Frame:	007453/0241			Pages:	5
		Recorded:	03/01/1995
Conveyance:	RELEASE OF SECURITY INTEREST

Total properties: 45

Patent #:	4023469	Issue Dt:		Application #:	05278902	Filing Dt:
Title:

Patent #:	4032265	Issue Dt:	06/28/1977	Application #:	05489971	Filing Dt:	07/19/1974
Title:	SUCTION STABILIZER FOR RECIPROCATING PUMPS AND STABILIZING METHOD

Patent #:	3989993	Issue Dt:		Application #:	05530316	Filing Dt:
Title:

Patent #:	3964692	Issue Dt:	06/22/1976	Application #:	05548669	Filing Dt:	02/10/1975
Title:	WINCH SPOOL WITH DISC BRAKE SYSTEM

Patent #:	3985093	Issue Dt:	10/12/1976	Application #:	05572891	Filing Dt:	04/30/1975
Title:	ROPE/CHAIN SHEAVE

Patent #:	4056335	Issue Dt:		Application #:	05653425	Filing Dt:
Title:

Patent #:	4221549	Issue Dt:		Application #:	05731596	Filing Dt:
Title:

Patent #:	4086029	Issue Dt:		Application #:	05747569	Filing Dt:
Title:

Patent #:	4137933	Issue Dt:	02/06/1979	Application #:	05768040	Filing Dt:	02/14/1977
Title:	CONTROL VALVE

Patent #:	4207036	Issue Dt:		Application #:	05878205	Filing Dt:
Title:

Patent #:	4231671	Issue Dt:	11/04/1980	Application #:	05958458	Filing Dt:	11/06/1978
Title:	ECCENTRIC SHAFT AND METHOD OF MAKING A SHAFT

Patent #:	4241788	Issue Dt:	12/30/1980	Application #:	06008183	Filing Dt:	01/31/1979
Title:	MULTIPLE CUP DOWNWELL GAS SEPARATOR

Patent #:	4434971	Issue Dt:	03/06/1984	Application #:	06233561	Filing Dt:	02/11/1981
Title:	DRILLING RIG DRAWWORKS HOOK LOAD OVERSPEED PREVENTING SYSTEM

Patent #:	4409027	Issue Dt:	10/11/1983	Application #:	06393192	Filing Dt:	06/28/1982
Title:	ALLOY STEEL FOR ROLL CASTER SHELL

Patent #:	4467703	Issue Dt:	08/28/1984	Application #:	06411932	Filing Dt:	08/26/1982
Title:	IMPROVED RECIPROCABLE PUMP

Patent #:	4534706	Issue Dt:	08/13/1985	Application #:	06468341	Filing Dt:	02/22/1983
Title:	SELF-COMPENSATING OSCILLATORY PUMP CONTROL

Patent #:	4522450	Issue Dt:	06/11/1985	Application #:	06489116	Filing Dt:	04/27/1983
Title:	BRAKE SYSTEM

Patent #:	4487222	Issue Dt:	12/11/1984	Application #:	06491282	Filing Dt:	05/03/1983
Title:	POPPET TYPE FLUID VALVE WITH REPLACEABLE WEAR SURFACE

Patent #:	4504195	Issue Dt:	03/12/1985	Application #:	06506000	Filing Dt:	06/20/1983
Title:	JET PUMP FOR OIL WELLS

Patent #:	4519457	Issue Dt:	05/28/1985	Application #:	06580684	Filing Dt:	02/16/1984
Title:	OIL WELL STANDING VALVE

Patent #:	4627519	Issue Dt:	12/09/1986	Application #:	06594795	Filing Dt:	03/29/1984
Title:	HYDRAULIC DISK BRAKE HAVING A BRAKING TORQUE-TO-HYDRAULIC FORCE CONVERTER

Patent #:	4513869	Issue Dt:	04/30/1985	Application #:	06611116	Filing Dt:	05/17/1984
Title:	PEDESTAL CRANE MOUNTING SYSTEM

Patent #:	4601235	Issue Dt:	07/22/1986	Application #:	06621832	Filing Dt:	06/18/1984
Title:	RECIPROCATING PUMP PISTON

Patent #:	4585213	Issue Dt:	04/29/1986	Application #:	06638426	Filing Dt:	08/07/1984
Title:	WELL DERRICK

Patent #:	4653271	Issue Dt:	03/31/1987	Application #:	06655215	Filing Dt:	09/27/1984
Title:	BOOM CRANE CENTERING

Patent #:	4554947	Issue Dt:	11/26/1985	Application #:	06666186	Filing Dt:	10/29/1984
Title:	LOAD RECALL VALVE

Patent #:	4568393	Issue Dt:	02/04/1986	Application #:	06678955	Filing Dt:	12/06/1984
Title:	CARBURIZED HIGH CHROME LINER

Patent #:	4787524	Issue Dt:	11/29/1988	Application #:	06780007	Filing Dt:	09/25/1985
Title:	OVERLOAD PROTECTION SYSTEM FOR A CRANE

Patent #:	4651578	Issue Dt:	03/24/1987	Application #:	06864240	Filing Dt:	05/19/1986
Title:	WELL PUMPING UNIT

Patent #:	4667697	Issue Dt:	05/26/1987	Application #:	06875253	Filing Dt:	06/17/1986
Title:	UNITIZED CHECK VALVE

Patent #:	4703665	Issue Dt:	11/03/1987	Application #:	06921578	Filing Dt:	10/22/1986
Title:	WELL PUMPING UNIT

Patent #:	4716961	Issue Dt:	01/05/1988	Application #:	07011576	Filing Dt:	02/06/1987
Title:	ROTARY DRIVE APPARATUS FOR DOWNHOLE PUMP

Patent #:	4732061	Issue Dt:	03/22/1988	Application #:	07023384	Filing Dt:	03/09/1987
Title:	POWER TONGS AND CLAMPING UNITS THEREFOR

Patent #:	4843945	Issue Dt:	07/04/1989	Application #:	07023385	Filing Dt:	03/09/1987
Title:	APPARATUS FOR MAKING AND BREAKING THREADED WELL PIPE CONNECTIONS

Patent #:	4782662	Issue Dt:	11/08/1988	Application #:	07032180	Filing Dt:	03/30/1987
Title:	BOOM CRANE CENTERING

Patent #:	4781359	Issue Dt:	11/01/1988	Application #:	07100158	Filing Dt:	09/23/1987
Title:	SUB ASSEMBLY FOR A SWIVEL

Patent #:	4813498	Issue Dt:	03/21/1989	Application #:	07163580	Filing Dt:	03/03/1988
Title:	ACTIVE COUNTERBALANCE FOR A POWER SWIVEL DURING WELL DRILLING

Patent #:	4877093	Issue Dt:	10/31/1989	Application #:	07163583	Filing Dt:	03/03/1988
Title:	SPRING ACTUATED POWER SWIVEL SUPPORT ROLLERS

Patent #:	4809792	Issue Dt:	03/07/1989	Application #:	07163584	Filing Dt:	03/03/1988
Title:	SUPPORT SYSTEM FOR A TOP DRIVEN DRILLING UNIT

Patent #:	4928726	Issue Dt:	05/29/1990	Application #:	07212936	Filing Dt:	06/29/1988
Title:	CROSSARM VALVE SEAT WITH PULLING LEDGE

Patent #:	4922957	Issue Dt:	05/08/1990	Application #:	07321157	Filing Dt:	03/08/1989
Title:	VALVE WITH REPLACEABLE SEAL ELEMENT

Patent #:	4951707	Issue Dt:	08/28/1990	Application #:	07335725	Filing Dt:	04/10/1989
Title:	SEAL FOR A PUMP VALVE

Patent #:	4981180	Issue Dt:	01/01/1991	Application #:	07379765	Filing Dt:	07/14/1989
Title:	POSITIVE LOCK OF A DRIVE ASSEMBLY

Patent #:	5051007	Issue Dt:	09/24/1991	Application #:	07415841	Filing Dt:	10/02/1989
Title:	LUBRICATION OF A CENTRIFUGAL PUMP BEARING

Patent #:	5038871	Issue Dt:	08/13/1991	Application #:	07538634	Filing Dt:	06/13/1990
Title:	APPARATUS FOR SUPPORTING A DIRECT DRIVE DRILLING UNIT IN A POSITION OFFSET FROM THE CENTERLINE OF A WELL

Assignor

NATIONAL-OILWELL

Exec Dt:

02/28/1995

Assignee

CITICORP USA, INC., AS COLLATERAL AGENT

399 PARK AVENUE

NEW YORK, NEW YORK 10043

Correspondence name and address
	LEWIS ELDRIDGE
	C/O WEIL, GOTSHAL & MENGES
	767 FIFTH AVENUE
	32ND FLOOR
	NEW YORK, NY 10153

Search Results as of: 05/22/2024 11:09 AM

If you have any comments or questions concerning the data displayed, contact PRD / Assignments at 571-272-3350. v.2.6

Web interface last modified: August 25, 2017 v.2.6