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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:	006783/0444			Pages:	8
		Recorded:	12/03/1993
Conveyance:	CHANGE OF NAME (SEE DOCUMENT FOR DETAILS).

Total properties: 34

Patent #:	4498534	Issue Dt:	02/12/1985	Application #:	06079037	Filing Dt:	09/26/1979
Title:	LINER HANGER ASSEMBLY

Patent #:	4287949	Issue Dt:	09/08/1981	Application #:	06109979	Filing Dt:	01/07/1980
Title:	SETTING TOOLS AND LINER HANGER ASSEMBLY

Patent #:	4454913	Issue Dt:	06/19/1984	Application #:	06222537	Filing Dt:	01/05/1981
Title:	SAFETY VALVE SYSTEM WITH RETRIEVABLE EQUALIZING FEATURE

Patent #:	4497371	Issue Dt:	02/05/1985	Application #:	06274170	Filing Dt:	06/16/1981
Title:	SETTING TOOL AND RETRIEVABLE LANDING ASSEMBLY

Patent #:	4399873	Issue Dt:	08/23/1983	Application #:	06274284	Filing Dt:	06/16/1981
Title:	RETRIEVABLE INSERT LANDING ASSEMBLY

Patent #:	4441519	Issue Dt:	04/10/1984	Application #:	06346811	Filing Dt:	02/08/1982
Title:	GAS LIFT VALVE AND METHOD OF PRESETTING

Patent #:	4482014	Issue Dt:	11/13/1984	Application #:	06397680	Filing Dt:	07/12/1982
Title:	BARRIER TOOL FOR POLISHED BORE RECEPTACLE

Patent #:	4530398	Issue Dt:	07/23/1985	Application #:	06404386	Filing Dt:	08/02/1982
Title:	RETRIEVABLE WELL BORE PACKER

Patent #:	RE31881	Issue Dt:	05/14/1985	Application #:	06529757	Filing Dt:	09/06/1983
Title:	SETTING TOOLS AND LINER HANGER ASSEMBLY

Patent #:	4572290	Issue Dt:	02/25/1986	Application #:	06577144	Filing Dt:	02/06/1984
Title:	MECHANICAL SETTING TOOL

Patent #:	5181570	Issue Dt:	01/26/1993	Application #:	06609104	Filing Dt:	05/10/1984
Title:	LINER HANGER ASSEMBLY

Patent #:	4603743	Issue Dt:	08/05/1986	Application #:	06697231	Filing Dt:	02/01/1985
Title:	HYDRAULIC/MECHANICAL SETTING TOOL AND LINER HANGER

Patent #:	4601343	Issue Dt:	07/22/1986	Application #:	06698145	Filing Dt:	02/04/1985
Title:	PBR WITH LATCHING SYSTEM FOR TUBING

Patent #:	4640351	Issue Dt:	02/03/1987	Application #:	06783207	Filing Dt:	10/02/1985
Title:	SEALING PACKER

Patent #:	4671358	Issue Dt:	06/09/1987	Application #:	06810089	Filing Dt:	12/18/1985
Title:	WIPER PLUG CEMENTING SYSTEM AND METHOD OF USE THEREOF

Patent #:	4712615	Issue Dt:	12/15/1987	Application #:	06881053	Filing Dt:	07/01/1986
Title:	LINER HANGER ASSEMBLY WITH SETTING TOOL

Patent #:	4712614	Issue Dt:	12/15/1987	Application #:	06901835	Filing Dt:	08/29/1986
Title:	LINER HANGER ASSEMBLY WITH COMBINATION SETTING TOOL

Patent #:	4784226	Issue Dt:	11/15/1988	Application #:	07053828	Filing Dt:	05/22/1987
Title:	DRILLABLE BRIDGE PLUG

Patent #:	4813486	Issue Dt:	03/21/1989	Application #:	07100303	Filing Dt:	09/23/1987
Title:	RETRACTABLE SLIP ASSEMBLY

Patent #:	4898243	Issue Dt:	02/06/1990	Application #:	07147533	Filing Dt:	01/25/1988
Title:	LINER AND DRILL PIPE ASSEMBLY

Patent #:	4848462	Issue Dt:	07/18/1989	Application #:	07191387	Filing Dt:	05/09/1988
Title:	ROTATABLE LINER HANGER

Patent #:	4828037	Issue Dt:	05/09/1989	Application #:	07191578	Filing Dt:	05/09/1988
Title:	LINER HANGER WITH RETRIEVABLE BALL VALVE SEAT

Patent #:	4862966	Issue Dt:	09/05/1989	Application #:	07194131	Filing Dt:	05/16/1988
Title:	LINER HANGER WITH COLLAPSIBLE BALL VALVE SEAT

Patent #:	4880058	Issue Dt:	11/14/1989	Application #:	07194132	Filing Dt:	05/16/1988
Title:	STAGE CEMENTING VALVE

Patent #:	4926938	Issue Dt:	05/22/1990	Application #:	07351734	Filing Dt:	05/12/1989
Title:	ROTATABLE LINER HANGER WITH MULTIPLE BEARINGS AND CONES

Patent #:	5048611	Issue Dt:	09/17/1991	Application #:	07533028	Filing Dt:	06/04/1990
Title:	PRESSURE OPERATED CIRCULATION VALVE

Patent #:	5058672	Issue Dt:	10/22/1991	Application #:	07566064	Filing Dt:	08/13/1990
Title:	LANDING COLLAR AND FLOAT VALVE ASSEMBLY

Patent #:	5048606	Issue Dt:	09/17/1991	Application #:	07579547	Filing Dt:	09/10/1990
Title:	SETTING TOOL FOR A LINER HANGER ASSEMBLY

Patent #:	5074362	Issue Dt:	12/24/1991	Application #:	07579653	Filing Dt:	09/10/1990
Title:	FINGER NUT SETTING TOOL AND LINER HANGER ASSEMBLY

Patent #:	5048612	Issue Dt:	09/17/1991	Application #:	07579654	Filing Dt:	09/10/1990
Title:	DOUBLE NUT SETTING TOOL AND LINGER HANGER ASSEMBLY

Patent #:	5058071	Issue Dt:	10/15/1991	Application #:	07646508	Filing Dt:	01/24/1991
Title:	SEMICONDUCTOR MEMORY DEVICE HAVING MEANS FOR REPAIRING THE MEMORY DEVICE WITH RESPECT TO POSSIBLE DETECTIVE MEMORY PORTIONS

Patent #:	4111608	Issue Dt:		Application #:	UNAVAILABLE	Filing Dt:
Title:

Patent #:	4043390	Issue Dt:		Application #:	UNAVAILABLE	Filing Dt:
Title:

Patent #:	4014386	Issue Dt:		Application #:	UNAVAILABLE	Filing Dt:
Title:

Assignor

LINDSEY COMPLETION SYSTEMS, INC.

Exec Dt:

12/31/1989

Assignee

MASX ENERGY SERVICES GROUP, INC.

3317 WEST 11TH STREET

HOUSTON, TEXAS 77008

Correspondence name and address
	MASCOTECH, INC.
	EDGAR A. ZARINS
	LEGAL DEPT.
	21001 VAN BORN ROAD
	TAYLOR, MI 48180

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