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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.

Total properties: 16

Patent #:	4442908	Issue Dt:	04/17/1984	Application #:	06281334	Filing Dt:	07/08/1981
Title:	TOOL FOR DRILLING CURVED SECTIONS OF WELL HOLES

Patent #:	4789032	Issue Dt:	12/06/1988	Application #:	07101249	Filing Dt:	09/25/1987
Title:	ORIENTING AND CIRCULATING SUB

Patent #:	4941354	Issue Dt:	07/17/1990	Application #:	07279936	Filing Dt:	12/05/1988
Title:	TRI-AXIAL ACCELEROMETERS

Patent #:	4956823	Issue Dt:	09/11/1990	Application #:	07286299	Filing Dt:	12/19/1988
Title:	SIGNAL TRANSMITTERS

Patent #:	4991668	Issue Dt:	02/12/1991	Application #:	07306050	Filing Dt:	02/06/1989
Title:	CONTROLLED DIRECTIONAL DRILLING SYSTEM AND METHOD

Patent #:	4938298	Issue Dt:	07/03/1990	Application #:	07315882	Filing Dt:	02/24/1989
Title:	DIRECTIONAL WELL CONTROL

Patent #:	4999920	Issue Dt:	03/19/1991	Application #:	07363681	Filing Dt:	06/09/1989
Title:	SURVEYING OF BOREHOLES

Patent #:	5036921	Issue Dt:	08/06/1991	Application #:	07544910	Filing Dt:	06/28/1990
Title:	UNDERREAMER WITH SEQUENTIALLY EXPANDABLE CUTTER BLADES

Patent #:	5060738	Issue Dt:	10/29/1991	Application #:	07586599	Filing Dt:	09/20/1990
Title:	THREE-BLADE UNDERREAMER

Patent #:	5042597	Issue Dt:	08/27/1991	Application #:	07598583	Filing Dt:	10/15/1990
Title:	HORIZONTAL DRILLING METHOD AND APPARATUS

Patent #:	5090480	Issue Dt:	02/25/1992	Application #:	07633687	Filing Dt:	12/26/1990
Title:	UNDERREAMER WITH SIMULTANEOUSLY EXPANDABLE CUTTER BLADES AND METHOD

Patent #:	5182731	Issue Dt:	01/26/1993	Application #:	07889888	Filing Dt:	05/29/1992
Title:	WELL BORE DATA TRANSMISSION APPARATUS

Patent #:	5320179	Issue Dt:	06/14/1994	Application #:	07925100	Filing Dt:	08/06/1992
Title:	STEERING SUB FOR FLEXIBLE DRILLING

Patent #:	5368109	Issue Dt:	11/29/1994	Application #:	08145579	Filing Dt:	11/04/1993
Title:	APPARATUS FOR ARCUATE DRILLING

Patent #:	5396966	Issue Dt:	03/14/1995	Application #:	08217352	Filing Dt:	03/24/1994
Title:	STEERING SUB FOR FLEXIBLE DRILLING

Patent #:	5588818	Issue Dt:	12/31/1996	Application #:	08433544	Filing Dt:	04/20/1995
Title:	ROTOR-TO-ROTOR COUPLING

Assignor

Exec Dt:

11/06/1997

Assignee

10 SOUTH LASALLE STREET, SUITE 2700

CHICAGO, ILLINOIS 60603

Correspondence name and address
	KELLY MORGAN
	5800 SEARS TOWER
	CHICAGO, IL 60606

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