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Patent Assignment Details

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

Reel/Frame:	010977/0150			Pages:	7
		Recorded:	07/18/2000
Conveyance:	ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).

Total properties: 42

Patent #:	4346629	Issue Dt:	08/31/1982	Application #:	06145905	Filing Dt:	05/02/1980
Title:	TONG ASSEMBLY

Patent #:	4394883	Issue Dt:	07/26/1983	Application #:	06203527	Filing Dt:	11/03/1980
Title:	WELL JAR

Patent #:	4361195	Issue Dt:	11/30/1982	Application #:	06214454	Filing Dt:	12/08/1980
Title:	DOUBLE ACTING HYDRAULIC MECHANISM

Patent #:	4466273	Issue Dt:	08/21/1984	Application #:	06292121	Filing Dt:	07/20/1981
Title:	LEAK DETECTION SYSTEM

Patent #:	4440241	Issue Dt:	04/03/1984	Application #:	06294497	Filing Dt:	08/24/1981
Title:	METHOD AND APPARATUS FOR DRILLING A WELL BORE

Patent #:	4480462	Issue Dt:	11/06/1984	Application #:	06436619	Filing Dt:	10/25/1982
Title:	HYDROSTATIC TEST APPARATUS

Patent #:	4548069	Issue Dt:	10/22/1985	Application #:	06488694	Filing Dt:	04/26/1983
Title:	PIPE TESTING TOOL

Patent #:	4526241	Issue Dt:	07/02/1985	Application #:	06498744	Filing Dt:	05/27/1983
Title:	ADJUSTABLE LENGTH DRILLING SUB

Patent #:	4498548	Issue Dt:	02/12/1985	Application #:	06505981	Filing Dt:	06/20/1983
Title:	WELL JAR INCORPORATRING ELONGATE RESILIENT VIBRATION SNUBBERS AND MOUNTING APPARATUS THEREFOR

Patent #:	4517828	Issue Dt:	05/21/1985	Application #:	06508464	Filing Dt:	06/28/1983
Title:	APPARATUS FOR LEAK TESTING OF PIPE

Patent #:	4508182	Issue Dt:	04/02/1985	Application #:	06515199	Filing Dt:	07/20/1983
Title:	METHOD AND APPARATUS FOR CONTROLLING AZIMUTHAL DRIFT OF A DRILL BIT

Patent #:	4600063	Issue Dt:	07/15/1986	Application #:	06614474	Filing Dt:	05/29/1984
Title:	DOUBLE-TAPER SLIP-ON DRILL STRING STABILIZER

Patent #:	4600062	Issue Dt:	07/15/1986	Application #:	06630777	Filing Dt:	07/13/1984
Title:	SHOCK ABSORBING DRILLING TOOL

Patent #:	4566546	Issue Dt:	01/28/1986	Application #:	06648711	Filing Dt:	09/10/1984
Title:	SINGLE ACTING HYDRAULIC FISHING JAR

Patent #:	4630690	Issue Dt:	12/23/1986	Application #:	06755053	Filing Dt:	07/12/1985
Title:	SPIRALLING TAPERED SLIP-ON DRILL STRING STABILIZER

Patent #:	4727749	Issue Dt:	03/01/1988	Application #:	06868009	Filing Dt:	05/29/1986
Title:	METHOD AND APPARATUS FOR LEAK TESTING OF PIPE

Patent #:	4715454	Issue Dt:	12/29/1987	Application #:	06870087	Filing Dt:	06/03/1986
Title:	MECHANICAL DIRECTIONAL DRILLING JAR WITH SWIVEL MEANS

Patent #:	4879896	Issue Dt:	11/14/1989	Application #:	07086792	Filing Dt:	08/19/1987
Title:	METHOD AND APPARATUS FOR LEAK TESTING OF PIPE

Patent #:	4844183	Issue Dt:	07/04/1989	Application #:	07114560	Filing Dt:	10/28/1987
Title:	ACCELERATOR FOR FISHING JAR WITH HYDROSTATIC ASSIST

Patent #:	4873675	Issue Dt:	10/10/1989	Application #:	07205291	Filing Dt:	06/10/1988
Title:	METHOD AND APPARATUS FOR SEISMIC EXPLORATION OF STRATA SURROUNDING A BOREHOLE

Patent #:	4878539	Issue Dt:	11/07/1989	Application #:	07227197	Filing Dt:	08/02/1988
Title:	METHOD AND SYSTEM FOR MAINTAINING AND PRODUUCTION HORIZONTAL WELL BORES

Patent #:	4838353	Issue Dt:	06/13/1989	Application #:	07227198	Filing Dt:	08/02/1988
Title:	SYSTEM FOR COMPLETING AND MAINTAINING LATERAL WELLS

Patent #:	4998435	Issue Dt:	03/12/1991	Application #:	07296859	Filing Dt:	01/13/1989
Title:	METHOD AND APPARATUS FOR LEAK TESTING OF PIPE

Patent #:	5111885	Issue Dt:	05/12/1992	Application #:	07598932	Filing Dt:	10/17/1990
Title:	DECENTRALIZED CASING HOLE PUNCHER

Patent #:	5165492	Issue Dt:	11/24/1992	Application #:	07604783	Filing Dt:	10/26/1990
Title:	APPARATUS FOR PREVENTING SEPARATION OF A DOWN-HOLE MOTOR FROM A DRILL STRING

Patent #:	5086851	Issue Dt:	02/11/1992	Application #:	07604784	Filing Dt:	10/26/1990
Title:	COMBINATION THRUST AND RADIAL BEARING FOR USE IN DOWN-HOLE DRILLING TOOLS

Patent #:	5086853	Issue Dt:	02/11/1992	Application #:	07670249	Filing Dt:	03/15/1991
Title:	LARGE BORE HYDRAULIC DRILLING JAR

Patent #:	5232060	Issue Dt:	08/03/1993	Application #:	07745416	Filing Dt:	08/15/1991
Title:	DOUBLE-ACTING ACCELERATOR FOR USE WITH HYDRAULIC DRILLING JARS

Patent #:	5323684	Issue Dt:	06/28/1994	Application #:	07864420	Filing Dt:	04/06/1992
Title:	DOWNHOLE CHARGE CARRIER

Patent #:	5295544	Issue Dt:	03/22/1994	Application #:	07876485	Filing Dt:	04/30/1992
Title:	DECENTRALIZED CASING HOLE PUNCHER

Patent #:	5303776	Issue Dt:	04/19/1994	Application #:	07927392	Filing Dt:	09/25/1992
Title:	DEVICE FOR A DOWN-HOLE ASSEMBLY

Patent #:	5318139	Issue Dt:	06/07/1994	Application #:	08054718	Filing Dt:	04/29/1993
Title:	REDUCED WAITING TIME HYDRAULIC DRILLING JAR

Patent #:	5624001	Issue Dt:	04/29/1997	Application #:	08473067	Filing Dt:	06/07/1995
Title:	MECHANICAL-HYDRAULIC DOUBLE-ACTING DRILLING JAR

Patent #:	5669457	Issue Dt:	09/23/1997	Application #:	08581772	Filing Dt:	01/02/1996
Title:	DRILL STRING ORIENTING TOOL

Patent #:	5884716	Issue Dt:	03/23/1999	Application #:	08731550	Filing Dt:	10/16/1996
Title:	CONSTANT BOTTOM CONTACT THRUSTER

Patent #:	5984028	Issue Dt:	11/16/1999	Application #:	08893207	Filing Dt:	07/15/1997
Title:	CONVERTED DUAL-ACTING HYDRAULIC DRILLING JAR

Patent #:	6014933	Issue Dt:	01/18/2000	Application #:	08942631	Filing Dt:	10/02/1997
Title:	DOWNHOLE CHARGE CARRIER

Patent #:	5918688	Issue Dt:	07/06/1999	Application #:	08947622	Filing Dt:	10/09/1997
Title:	GAS FILLED ACCELERATOR

Patent #:	6105675	Issue Dt:	08/22/2000	Application #:	09225786	Filing Dt:	01/05/1999
Title:	DOWNHOLE WINDOW MILLING APPARATUS AND METHOD FOR USING THE SAME

Patent #:	6135217	Issue Dt:	10/24/2000	Application #:	09233008	Filing Dt:	01/19/1999
Title:	CONVERTED DUAL-ACTING HYDRAULIC DRILLING JAR

Patent #:	6116354	Issue Dt:	09/12/2000	Application #:	09274458	Filing Dt:	03/19/1999
Title:	ROTARY STEERABLE SYSTEM FOR USE IN DRILLING DEVIATED WELLS

Patent #:	6361217	Issue Dt:	03/26/2002	Application #:	09338259	Filing Dt:	06/22/1999
Title:	HIGH CAPACITY THRUST BEARING

Assignor

DAILEY INTERNATIONAL, INC.

Exec Dt:

04/13/2000

Assignee

WEATHERFORD U.S. L.P.

515 POST OAK BLVD., SUITE 600

ATTN: SCOTT BROWN

HOUSTON, TEXAS 77027

Correspondence name and address
	FULBRIGHT & JAWORSKI L.L.P.
	ERIC B. HALL
	1301 MCKINNEY, SUITE 5100
	HOUSTON, TX 77010-3095

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