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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:	014059/0689			Pages:	35
		Recorded:	04/29/2003
Conveyance:	SECURITY INTEREST (SEE DOCUMENT FOR DETAILS).

Total properties: 22

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

Assignors

1

KEY ENERGY SERVICES, INC.

Exec Dt:

04/16/2003

2

BROOKS WELL SERVICING, INC.

Exec Dt:

04/16/2003

3

DAWSON PRODUCTION ACQUISITION CORP.

Exec Dt:

04/16/2003

4

DAWSON PRODUCTION MANAGEMENT, INC.

Exec Dt:

04/16/2003

5

DAWSON PRODUCTION TAYLOR, INC.

Exec Dt:

04/16/2003

6

KALKASKA OILFIELD SERVICES, INC.

Exec Dt:

04/16/2003

7

KEY ENERGY DRILLING, INC.

Exec Dt:

04/16/2003

8

KEY ENERGY SERVICES-CALIFORNIA, INC

Exec Dt:

04/16/2003

9

KEY ENERGY SERVICES-SOUTH TEXAS, INC.

Exec Dt:

04/16/2003

10

KEY FOUR CORNERS, INC.

Exec Dt:

04/16/2003

11

KEY ROCKY MOUNTAIN, INC.

Exec Dt:

04/16/2003

12

MISR KEY ENERGY SERVICES LLC

Exec Dt:

04/16/2003

13

Q SERVICES, INC

Exec Dt:

04/16/2003

14

Q.V. SERVICES INC.

Exec Dt:

04/16/2002

15

UNITRAK SERVICES HOLDING, INC.

Exec Dt:

04/16/2003

16

WATSON OILFIELD SERVICE & SUPPLY INC.

Exec Dt:

04/16/2003

17

WELL-CO OIL SERVICE, INC.

Exec Dt:

04/16/2003

18

WELLTECH EASTERN INC.

Exec Dt:

04/16/2003

19

WELLTECH MID-CONTINENT INC

Exec Dt:

04/16/2003

20

YALE E. KEY INC

Exec Dt:

04/16/2003

21

BROOKS WELL SERVICING BENEFICIAL, L.P.

Exec Dt:

04/16/2003

22

DAWSON PRODUCTION PARTNERS, L.P.

Exec Dt:

04/16/2003

23

KEY ENERGY DRILLING BENEFICIAL, L.P.

Exec Dt:

04/16/2003

24

Q.V. SERVICES BENEFICIAL, L.P.

Exec Dt:

04/16/2003

25

UNITRAK SERVICES, L.P.

Exec Dt:

04/16/2003

26

WELLTECH MID-CONTINENT BENEFICIAL, L.P.

Exec Dt:

04/16/2003

27

YALE E. KEY BENEFICIAL, L.P.

Exec Dt:

04/16/2003

28

AES ACQUISTION, L.P.

Exec Dt:

04/16/2003

29

Q PRODUCTION SERVICES, L.P.

Exec Dt:

04/16/2003

30

QUALITY OIL FIELD SERVICES, L.P.

Exec Dt:

04/16/2003

31

QUALITY TUBULAR SERVICES, L.P.

Exec Dt:

04/16/2003

32

Q.V. SERVICES, LLC

Exec Dt:

04/16/2003

33

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

Exec Dt:

04/16/2003

34

BROOKS WELL SERVICING, LLC

Exec Dt:

04/16/2003

35

KEY ENERGY DRILLING LLC

Exec Dt:

04/16/2003

36

Q ENERGY SERVICES, L.L.C.

Exec Dt:

04/16/2003

37

Q OIL & GAS SERVICES, LLC

Exec Dt:

04/16/2003

38

UNITRAK SERVICES, LLC

Exec Dt:

04/16/2003

39

YALE E. KEY, LLC

Exec Dt:

04/16/2003

40

WELLTECH MID-CONTINENT LLC

Exec Dt:

04/16/2003

Assignee

1

PNC BANK, NATIONAL ASSOCIATION

249 FIFTH AVENUE

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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