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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:	053090/0860			Pages:	12
		Recorded:	06/30/2020
Conveyance:	SECURITY INTEREST (SEE DOCUMENT FOR DETAILS).

Total properties: 24

Patent #:	6568492	Issue Dt:	05/27/2003	Application #:	09798171	Filing Dt:	03/02/2001
Publication #:	US20020121393	Pub Dt:	09/05/2002
Title:	DRAG-TYPE CASING MILL/DRILL BIT

Patent #:	6926099	Issue Dt:	08/09/2005	Application #:	10397566	Filing Dt:	03/26/2003
Publication #:	US20040188149	Pub Dt:	09/30/2004
Title:	DRILL OUT BI-CENTER BIT AND METHOD FOR USING SAME

Patent #:	7258833	Issue Dt:	08/21/2007	Application #:	10657896	Filing Dt:	09/09/2003
Publication #:	US20050053511	Pub Dt:	03/10/2005
Title:	HIGH-ENERGY CASCADING OF ABRASIVE WEAR COMPONENTS

Patent #:	7677333	Issue Dt:	03/16/2010	Application #:	11406470	Filing Dt:	04/18/2006
Publication #:	US20070240905	Pub Dt:	10/18/2007
Title:	DRILL BIT WITH MULTIPLE CUTTER GEOMETRIES

Patent #:	7721827	Issue Dt:	05/25/2010	Application #:	12147238	Filing Dt:	06/26/2008
Publication #:	US20090045585	Pub Dt:	02/19/2009
Title:	ROCK BIT HAVING A SEAL GLAND WITH A CONICAL SEALING SURFACE

Patent #:	7832505	Issue Dt:	11/16/2010	Application #:	12252252	Filing Dt:	10/15/2008
Publication #:	US20090114452	Pub Dt:	05/07/2009
Title:	ROCK BIT WITH A THERMAL INSULATING SEAL RING POSITIONED IN THE SEAL GLAND

Patent #:	8082104	Issue Dt:	12/20/2011	Application #:	12359065	Filing Dt:	01/23/2009
Publication #:	US20100191471	Pub Dt:	07/29/2010
Title:	METHOD TO DETERMINE ROCK PROPERTIES FROM DRILLING LOGS

Patent #:	8109346	Issue Dt:	02/07/2012	Application #:	12708003	Filing Dt:	02/18/2010
Publication #:	US20100139988	Pub Dt:	06/10/2010
Title:	DRILL BIT SUPPORTING MULTIPLE CUTTING ELEMENTS WITH MULTIPLE CUTTER GEOMETRIES AND METHOD OF ASSEMBLY

Patent #:	8403079	Issue Dt:	03/26/2013	Application #:	12757958	Filing Dt:	04/09/2010
Publication #:	US20100193251	Pub Dt:	08/05/2010
Title:	ROCK BIT HAVING A SEAL GLAND WITH A CONICAL SEALING SURFACE

Patent #:	8393418	Issue Dt:	03/12/2013	Application #:	12757959	Filing Dt:	04/09/2010
Publication #:	US20100194057	Pub Dt:	08/05/2010
Title:	ROCK BIT HAVING A SEAL GLAND WITH A CONICAL SEALING SURFACE

Patent #:	8191656	Issue Dt:	06/05/2012	Application #:	12794640	Filing Dt:	06/04/2010
Publication #:	US20100243334	Pub Dt:	09/30/2010
Title:	AUTO ADAPTABLE CUTTING STRUCTURE

Patent #:	7971660	Issue Dt:	07/05/2011	Application #:	12870471	Filing Dt:	08/27/2010
Publication #:	US20100320002	Pub Dt:	12/23/2010
Title:	ROCK BIT WITH A THERMAL INSULATING SEAL RING POSITIONED IN THE SEAL GLAND

Patent #:	8522899	Issue Dt:	09/03/2013	Application #:	12896406	Filing Dt:	10/01/2010
Publication #:	US20120080236	Pub Dt:	04/05/2012
Title:	WEAR RESISTANT MATERIAL AT THE SHIRTTAIL EDGE AND LEADING EDGE OF A ROTARY CONE DRILL BIT

Patent #:	8534390	Issue Dt:	09/17/2013	Application #:	12896484	Filing Dt:	10/01/2010
Publication #:	US20120080237	Pub Dt:	04/05/2012
Title:	WEAR RESISTANT MATERIAL FOR THE SHIRTTAIL OUTER SURFACE OF A ROTARY CONE DRILL BIT

Patent #:	8544568	Issue Dt:	10/01/2013	Application #:	12960926	Filing Dt:	12/06/2010
Publication #:	US20120138365	Pub Dt:	06/07/2012
Title:	SHOULDER DURABILITY ENHANCEMENT FOR A PDC DRILL BIT USING SECONDARY AND TERTIARY CUTTING ELEMENTS

Patent #:	8528667	Issue Dt:	09/10/2013	Application #:	13156458	Filing Dt:	06/09/2011
Publication #:	US20120080238	Pub Dt:	04/05/2012
Title:	WEAR RESISTANT MATERIAL AT THE LEADING EDGE OF THE LEG FOR A ROTARY CONE DRILL BIT

Patent #:	9423370	Issue Dt:	08/23/2016	Application #:	13401188	Filing Dt:	02/21/2012
Publication #:	US20130214799	Pub Dt:	08/22/2013
Title:	USE OF CAPACITANCE TO ANALYZE POLYCRYSTALLINE DIAMOND

Patent #:	9377428	Issue Dt:	06/28/2016	Application #:	14286136	Filing Dt:	05/23/2014
Publication #:	US20140253149	Pub Dt:	09/11/2014
Title:	NON-DESTRUCTIVE LEACHING DEPTH MEASUREMENT USING CAPACITANCE SPECTROSCOPY

Patent #:	10538970	Issue Dt:	01/21/2020	Application #:	15018542	Filing Dt:	02/08/2016
Publication #:	US20160153241	Pub Dt:	06/02/2016
Title:	METHOD FOR DRILLING OUT A PLUG USING A HYBRID ROTARY CONE DRILL BIT

Patent #:	9988854	Issue Dt:	06/05/2018	Application #:	15151552	Filing Dt:	05/11/2016
Publication #:	US20170328135	Pub Dt:	11/16/2017
Title:	ROLLER CONE DRILL BIT WITH IMPROVED EROSION RESISTANCE

Patent #:	10428584	Issue Dt:	10/01/2019	Application #:	15629083	Filing Dt:	06/21/2017
Publication #:	US20180016847	Pub Dt:	01/18/2018
Title:	BIT FOR DRILLING WITH CASING OR LINER STRING AND MANUFACTURE THEREOF

Patent #:	11060356	Issue Dt:	07/13/2021	Application #:	16496189	Filing Dt:	09/20/2019
Publication #:	US20200157890	Pub Dt:	05/21/2020
Title:	Superabrasive Cutters for Earth Boring Bits with Multiple Raised Cutting Surfaces

Assignor

Exec Dt:

06/30/2020

Assignee

30 GRESHAM STREET

LONDON, UNITED KINGDOM EC2V 7QP

Correspondence name and address
	DLA PIPER LLP (US)
	401 B STREET, SUITE 1700
	SAN DIEGO, CA 92101

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