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Patent Assignment Details

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Reel/Frame:	027269/0065			Pages:	8
		Recorded:	11/22/2011
Attorney Dkt #:	9097-34
Conveyance:	SUPPLEMENT TO PATENT SECURITY AGREEMENT

Total properties: 13

Patent #:	5303774	Issue Dt:	04/19/1994	Application #:	07989202	Filing Dt:	12/11/1992
Title:	RING SEAL PACKER

Patent #:	6199914	Issue Dt:	03/13/2001	Application #:	09274857	Filing Dt:	03/23/1999
Title:	DRILLING QUICK CONNECTORS

Patent #:	RE43697	Issue Dt:	10/02/2012	Application #:	10325047	Filing Dt:	12/20/2002
Title:	DRILLING QUICK CONNECTORS

Patent #:	7493944	Issue Dt:	02/24/2009	Application #:	10947778	Filing Dt:	09/23/2004
Publication #:	US20050092496	Pub Dt:	05/05/2005
Title:	WELLHEAD ISOLATION TOOL AND METHOD OF FRACTURING A WELL

Patent #:	7322407	Issue Dt:	01/29/2008	Application #:	11272289	Filing Dt:	11/09/2005
Publication #:	US20060060349	Pub Dt:	03/23/2006
Title:	WELLHEAD ISOLATION TOOL AND METHOD OF FRACTURING A WELL

Patent #:	RE43773	Issue Dt:	10/30/2012	Application #:	11581229	Filing Dt:	10/12/2006
Title:	DRILLING QUICK CONNECTORS

Patent #:	7416020	Issue Dt:	08/26/2008	Application #:	11891431	Filing Dt:	08/09/2007
Publication #:	US20070272402	Pub Dt:	11/29/2007
Title:	WELLHEAD ISOLATION TOOL, WELLHEAD ASSEMBLY INCORPORATING THE SAME, AND METHOD OF FRACTURING A WELL

Patent #:	7520322	Issue Dt:	04/21/2009	Application #:	12001621	Filing Dt:	12/11/2007
Publication #:	US20080093067	Pub Dt:	04/24/2008
Title:	WELLHEAD ISOLATION TOOL AND METHOD OF FRACTURING A WELL

Patent #:	7726393	Issue Dt:	06/01/2010	Application #:	12154338	Filing Dt:	05/21/2008
Publication #:	US20080223570	Pub Dt:	09/18/2008
Title:	WELLHEAD ISOLATION TOOL AND WELLHEAD ASSEMBLY INCORPORATING THE SAME

Patent #:	8272433	Issue Dt:	09/25/2012	Application #:	12757940	Filing Dt:	04/09/2010
Publication #:	US20100193178	Pub Dt:	08/05/2010
Title:	WELLHEAD ISOLATION TOOL AND WELLHEAD ASSEMBLY INCORPORATING THE SAME

Assignor

Exec Dt:

11/18/2011

Assignee

500 WEST MADISON

CHICAGO, ILLINOIS 60661

Correspondence name and address
	LAURA KONRATH
	35 W WACKER DRIVE
	WINSTON & STRAWN LLP, SUITE 2800
	CHICAGO, IL 60601

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