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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:	014119/0460			Pages:	34
		Recorded:	11/12/2003
Conveyance:	SECURITY INTEREST (SEE DOCUMENT FOR DETAILS).

Total properties: 24

1

Patent #:	5711382	Issue Dt:	01/27/1998	Application #:	08506955	Filing Dt:	07/26/1995
Title:	AUTOMATED OIL RIG SERVICING SYSTEM

2

Patent #:	5988299	Issue Dt:	11/23/1999	Application #:	08623041	Filing Dt:	03/28/1996
Title:	AUTOMATED OIL RIG SERVICING SYSTEM

3

Patent #:	6079490	Issue Dt:	06/27/2000	Application #:	09058477	Filing Dt:	04/10/1998
Title:	REMOTELY ACCESSIBLE MOBILE REPAIR UNIT FOR WELLS

4

Patent #:	6168054	Issue Dt:	01/02/2001	Application #:	09200490	Filing Dt:	11/25/1998
Title:	OIL RECOVERY SYSTEM AND APPARATUS

5

Patent #:	6377189	Issue Dt:	04/23/2002	Application #:	09281864	Filing Dt:	03/31/1999
Title:	OIL WELL SERVICING SYSTEM

6

Patent #:	6212763	Issue Dt:	04/10/2001	Application #:	09342564	Filing Dt:	06/29/1999
Title:	TORQUE-TURN SYSTEM FOR A THREE-ELEMENT SUCKER ROD JOINT

7

Patent #:	6276449	Issue Dt:	08/21/2001	Application #:	09533511	Filing Dt:	03/23/2000
Title:	Engine speed control for hoist and tongs

8

Patent #:	6253849	Issue Dt:	07/03/2001	Application #:	09534599	Filing Dt:	03/27/2000
Title:	Method of distinguishing the raising and lowering of tubing and sucker rods

9

Patent #:	6209639	Issue Dt:	04/03/2001	Application #:	09534601	Filing Dt:	03/27/2000
Title:	METHOD OF ENSURING THAT WELL TUBING WAS PROPERLY STRETCHED

10

Patent #:	6213207	Issue Dt:	04/10/2001	Application #:	09535239	Filing Dt:	03/27/2000
Title:	Method of distinguishing between installing different sucker rods

11

Patent #:	6241020	Issue Dt:	06/05/2001	Application #:	09535555	Filing Dt:	03/27/2000
Title:	METHOD OF RECORDING A CROSS-LOAD ON A MOBILE REPAIR UNIT FOR A WELL

12

Patent #:	6164493	Issue Dt:	12/26/2000	Application #:	09566166	Filing Dt:	05/05/2000
Title:	Oil recovery method

13

Patent #:	6374706	Issue Dt:	04/23/2002	Application #:	09768551	Filing Dt:	01/25/2001
Title:	SUCKER ROD TOOL

14

Patent #:	6728638	Issue Dt:	04/27/2004	Application #:	09838857	Filing Dt:	04/23/2001
Publication #:	US20020156582	Pub Dt:	10/24/2002
Title:	METHOD OF MONITORING OPERATIONS OF MULTIPLE SERVICE VEHICLES AT A WELL SITE

15

Patent #:	NONE	Issue Dt:		Application #:	09839080	Filing Dt:	04/23/2001
Publication #:	US20020153134	Pub Dt:	10/24/2002
Title:	Method of managing work orders at a well site

16

Patent #:	NONE	Issue Dt:		Application #:	09839103	Filing Dt:	04/23/2001
Publication #:	US20020156730	Pub Dt:	10/24/2002
Title:	Method of managing billing information at a well site

17

Patent #:	NONE	Issue Dt:		Application #:	09839411	Filing Dt:	04/23/2001
Publication #:	US20020156670	Pub Dt:	10/24/2002
Title:	Method of managing workers at a well site

18

Patent #:	6826492	Issue Dt:	11/30/2004	Application #:	09839444	Filing Dt:	04/23/2001
Publication #:	US20020156591	Pub Dt:	10/24/2002
Title:	METHOD OF MANAGING A WELL FILE RECORD AT A WELL SITE

19

Patent #:	6578634	Issue Dt:	06/17/2003	Application #:	09945924	Filing Dt:	09/05/2001
Publication #:	US20030042020	Pub Dt:	03/06/2003
Title:	METHOD OF MONITORING PUMPING OPERATIONS OF A SERVICE VEHICLE AT A WELL SITE

20

Patent #:	6758095	Issue Dt:	07/06/2004	Application #:	10046688	Filing Dt:	01/16/2002
Publication #:	US20030188584	Pub Dt:	10/09/2003
Title:	TONGS MONITOR WITH LEARNING MODE

21

Patent #:	7006009	Issue Dt:	02/28/2006	Application #:	10113609	Filing Dt:	04/01/2002
Publication #:	US20030183382	Pub Dt:	10/02/2003
Title:	SERVICING SYSTEM FOR WELLS

22

Patent #:	7004456	Issue Dt:	02/28/2006	Application #:	10263630	Filing Dt:	10/03/2002
Publication #:	US20040065874	Pub Dt:	04/08/2004
Title:	ENGINE SPEED LIMITER FOR A HOIST

23

Patent #:	NONE	Issue Dt:		Application #:	10437673	Filing Dt:	05/14/2003
Publication #:	US20040226712	Pub Dt:	11/18/2004
Title:	Portable memory device for mobile workover rig

24

Patent #:	7064677	Issue Dt:	06/20/2006	Application #:	10440633	Filing Dt:	05/19/2003
Publication #:	US20030196798	Pub Dt:	10/23/2003
Title:	METHOD OF MONITORING SERVICE OPERATIONS OF A SERVICE VEHICLE AT A WELL SITE

Assignors

1

KEY ENERGY SERVICES, INC.

Exec Dt:

11/10/2003

2

BROOKS WELL SERVICING, INC.

Exec Dt:

11/10/2003

3

DAWSON PRODUCTION ACQUISITION CORP.

Exec Dt:

11/10/2003

4

DAWSON PRODUCTION MANAGEMENT, INC.

Exec Dt:

11/10/2003

5

DAWSON PRODUCTION TAYLOR, INC.

Exec Dt:

11/10/2003

6

KALKASKA OILFIELD SERVICES, INC.

Exec Dt:

11/10/2003

7

KEY ENERGY DRILLING, INC.

Exec Dt:

11/10/2003

8

KEY ENERGY SERVICES-CALIFORNIA, INC.

Exec Dt:

11/10/2003

9

KEY ENERGY SERVICES-SOUTH TEXAS, INC.

Exec Dt:

11/10/2003

10

KEY FOUR CORNERS, INC.

Exec Dt:

11/10/2003

11

KEY ROCKY MOUNTAIN, INC.

Exec Dt:

11/10/2003

12

MISR KEY ENERGY SERVICES, LLC

Exec Dt:

11/10/2003

13

Q SERVICES, INC.

Exec Dt:

11/10/2003

14

Q.V. SERVICES, INC.

Exec Dt:

11/10/2003

15

UNITRAK SERVICES HOLDING, INC.

Exec Dt:

11/10/2003

16

WATSON OILFIELD SERVICE & SUPPLY, INC.

Exec Dt:

11/10/2003

17

WELL-CO OIL SERVICE, INC.

Exec Dt:

11/10/2003

18

WELLTECH EASTERN, INC.

Exec Dt:

11/10/2003

19

WELLTECH MID-CONTINENT, INC.

Exec Dt:

11/10/2003

20

YALE E. KEY, INC.

Exec Dt:

11/10/2003

21

BROOKS WELL SERVICING BENEFICIAL, L.P.

Exec Dt:

11/10/2003

22

DAWSON PRODUCTION PARTNERS, L.P.

Exec Dt:

11/10/2003

23

KEY ENERGY DRILLING BENEFICIAL, L.P.

Exec Dt:

11/10/2003

24

Q.V. SERVICES BENEFICIAL, L.P.

Exec Dt:

11/10/2003

25

UNITRAK SERVICES, L.P.

Exec Dt:

11/10/2003

26

WELLTECH MID-CONTINENT BENEFICIAL, L.P.

Exec Dt:

11/10/2003

27

YALE E. KEY BENEFICIAL, L.P.

Exec Dt:

11/10/2003

28

AES ACQUISITION, L.P.

Exec Dt:

11/10/2003

29

Q PRODUCTION SERVICES, L.P.

Exec Dt:

11/10/2003

30

QUALITY OIL FIELD SERVICES, L.P.

Exec Dt:

11/10/2003

31

QUALITY TUBULAR SERVICES, L.P.

Exec Dt:

11/10/2003

32

Q.V. SERVICES OF TEXAS, L.P.

Exec Dt:

11/10/2003

33

BROOKS WELL SERVICING, LLC

Exec Dt:

11/10/2003

34

KEY ENERY DRILLING, LLC

Exec Dt:

11/10/2003

35

Q ENERGY SERVICES, L.L.C.

Exec Dt:

11/10/2003

36

Q OIL & GAS SERVICES, LLC

Exec Dt:

11/10/2003

37

Q.V. SERVICES, LLC

Exec Dt:

11/10/2003

38

UNITRAK SERVICES, LLC

Exec Dt:

11/10/2003

39

YALE E. KEY, LLC

Exec Dt:

11/10/2003

40

WELLTECH MID-CONTINENT, LLC

Exec Dt:

11/10/2003

Assignee

1

PNC BANK, NATIONAL ASSOCIATION

249 FIFTH AVENUE

ONE PNC PLAZA 2ND FLOOR

PITTSBURGH, PENNSYLVANIA 15222

Correspondence name and address
	BUCHANAN INGERSOLL, P.C.
	MICHAEL L. DEVER
	301 GRANT STREET
	20TH FLOOR
	PITTSBURGH, PA 15219

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