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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:	006705/0467			Pages:	5
		Recorded:	09/14/1993
Conveyance:	ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).

Total properties: 14

Patent #:	4202120	Issue Dt:	05/13/1980	Application #:	05895011	Filing Dt:	04/10/1978
Title:	NOVEL IDENTIFICATION CARD, SENSOR, AND SYSTEM

Patent #:	4345651	Issue Dt:	08/24/1982	Application #:	06133363	Filing Dt:	03/21/1980
Title:	APPARATUS AND METHOD FOR THE MECHANICAL SEQUENTIAL RELEASE OF CEMENTING PLUGS

Patent #:	4420865	Issue Dt:	12/20/1983	Application #:	06318909	Filing Dt:	11/06/1981
Title:	METHOD FOR RETHREADING TUBULAR MEMBERS

Patent #:	4442894	Issue Dt:	04/17/1984	Application #:	06385615	Filing Dt:	06/07/1982
Title:	UNITARY FLOAT VALVE AND WIPING PLUG RETAINER

Patent #:	4450912	Issue Dt:	05/29/1984	Application #:	06385616	Filing Dt:	06/07/1982
Title:	METHOD AND APPARATUS FOR WELL CEMENTING THROUGH A TUBULAR MEMBER

Patent #:	4531582	Issue Dt:	07/30/1985	Application #:	06547408	Filing Dt:	10/31/1983
Title:	WELL CONDUIT CENTRALIZER

Patent #:	4641776	Issue Dt:	02/10/1987	Application #:	06765798	Filing Dt:	08/15/1985
Title:	SEGMENTED CONCENTRIC CENTRALIZER

Patent #:	4893844	Issue Dt:	01/16/1990	Application #:	06771137	Filing Dt:	08/28/1985
Title:	TUBULAR COUPING WITH VENTABLE SEAL VENTABLE SEAL

Patent #:	4838068	Issue Dt:	06/13/1989	Application #:	07218839	Filing Dt:	07/14/1988
Title:	THREADED CONNECTION FOR PIPES AND METHOD OF FABRICATING SAME

Patent #:	4872510	Issue Dt:	10/10/1989	Application #:	07252043	Filing Dt:	09/30/1988
Title:	SUBTERRANEAN WELL CASING FLOAT TOOL

Patent #:	5029906	Issue Dt:	07/09/1991	Application #:	07379106	Filing Dt:	07/13/1989
Title:	METHOD AND APPARATUS FOR FORMING A VENTABLE SEAL

Patent #:	4953622	Issue Dt:	09/04/1990	Application #:	07392906	Filing Dt:	08/14/1989
Title:	SUBTERRANEAN WELL CASING FLOAT TOOL

Patent #:	5092635	Issue Dt:	03/03/1992	Application #:	07516138	Filing Dt:	04/27/1990
Title:	THREAD FORM

Patent #:	4088186	Issue Dt:		Application #:	UNAVAILABLE	Filing Dt:
Title:

Assignor

Exec Dt:

08/13/1993

Assignee

1000 LOUISIANA

HOUSTON, TEXAS 77002

Correspondence name and address
	ROBERT C. CURFISS
	BUTLER & BINION, L.L.P.
	1000 LOUISIANA, STE. 1536
	HOUSTON, TX 77002

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