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Patent Assignment Assignor Details
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Assignor Name : WALKER, COLIN
Total Assignments: 23
Assignment: 1
Reel/Frame:006235/0443   Pages: 3
Recorded: 08/07/1992
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignor
1
Exec Dt:
07/01/1992
Assignee
1
Property
 
Pat #
Pub #
Intl #
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NONE
07926912
Correspondence name and address
LOREN G. HELMREICH
BROWNING, BUSHMAN, DANDERSON & BROOKHART
5718 WESTHEIMER, STE. 1800
HOUSTON, TX 77057
Assignment: 2
Reel/Frame:007740/0783   Pages: 2
Recorded: 12/07/1995
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
Exec Dt:
10/12/1994
Assignee
1
3000 N. SAM HOUSTON PKWY. EAST
HOUSTON, TEXAS 77032
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
08341547
Correspondence name and address
BROWNING, BUSHMAN, ANDERSON & BROOKHART
WILLIAM E. JOHNSON, JR.
5718 WESTHEIMER
SUITE 1800
HOUSTON, TX 77057
Assignment: 3
Reel/Frame:010675/0326   Pages: 19
Recorded: 03/09/2000
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
Exec Dt:
10/18/1999
2
Exec Dt:
08/19/1999
3
Exec Dt:
08/19/1999
4
Exec Dt:
10/18/1999
5
Exec Dt:
08/26/1999
6
Exec Dt:
10/28/1999
7
Exec Dt:
08/20/1999
8
Exec Dt:
10/18/1999
Assignee
1
4100 CLINTON DRIVE, 6TH FLOOR
HOUSTON, TEXAS 77020
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
09353599
Correspondence name and address
FIELD ATKINSON PERRATON
TERRENCE N. KUHARCHUK
2000 OXFORD TOWER, 10235 - 101 STREET
EDMONTON, ALBERTA
CANADA T5J 3G1
Assignment: 4
Reel/Frame:010440/0319   Pages: 5
Recorded: 12/06/1999
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
Exec Dt:
09/27/1999
2
Exec Dt:
09/27/1999
3
Exec Dt:
09/27/1999
4
Exec Dt:
09/27/1999
Assignee
1
300 DELAWARE AVENUE, SUITE 508
WILMINGTON, DELAWARE 19801
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
09177317
Correspondence name and address
WOODARD, EMHARDT, NAUGHTON, ET AL.
CHRISTOPHER A. BROWN
111 MONUMENT CIRCLE, SUITE 3700
INDIANAPOLIS, IN 46204
INDIANAPOLIS, INDIANA 46204
Assignment: 5
Reel/Frame:016688/0890   Pages: 4
Recorded: 10/26/2005
Attorney Dkt #:4002-3270
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
Exec Dt:
09/27/1999
2
Exec Dt:
09/27/1999
3
Exec Dt:
09/27/1999
4
Exec Dt:
09/27/1999
Assignee
1
300 DELAWARE AVENUE
SUITE 508
WILMINGTON, DELAWARE 19801
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
10404515
Correspondence name and address
CHRISTOPHER A. BROWN
WOODARD, EMHARDT ET AL.
SUITE 3700
INDIANAPOLIS, IN 46204-5137
Assignment: 6
Reel/Frame:011926/0734   Pages: 7
Recorded: 06/22/2001
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
Exec Dt:
10/11/1999
2
Exec Dt:
10/25/1999
3
Exec Dt:
10/11/1999
4
Exec Dt:
10/12/1999
5
Exec Dt:
10/21/1999
6
Exec Dt:
10/13/1999
7
Exec Dt:
10/26/1999
Assignee
1
4100 CLINTON DRIVE
HOUSTON, TEXAS 77020
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
09378023
Correspondence name and address
BROWNING BUSHMAN
LOREN G. HELMREICH
5718 WESTHEIMER
SUITE 1800
HOUSTON, TX 77057
Assignment: 7
Reel/Frame:013250/0361   Pages: 7
Recorded: 08/29/2002
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
Exec Dt:
10/26/1999
2
Exec Dt:
10/11/1999
3
Exec Dt:
10/25/1999
4
Exec Dt:
10/11/1999
5
Exec Dt:
10/12/1999
6
Exec Dt:
10/13/1999
7
Exec Dt:
10/21/1999
Assignee
1
4100 CLINTON DRIVE
HOUSTON, TEXAS 77020
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
10230709
Correspondence name and address
BROWNING BUSHMAN
LOREN G. HELMREICH
5718 WESTHEIMER, SUITE 1800
HOUSTON, TX 77057
Assignment: 8
Reel/Frame:018298/0776   Pages: 7
Recorded: 07/24/2006
Attorney Dkt #:SPERRY SUN-209-3
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
Exec Dt:
10/26/1999
2
Exec Dt:
10/11/1999
3
Exec Dt:
10/25/1999
4
Exec Dt:
10/11/1999
5
Exec Dt:
10/12/1999
6
Exec Dt:
10/13/1999
7
Exec Dt:
10/21/1999
Assignee
1
4100 CLINTON DRIVE
HOUSTON, TEXAS 77020
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
11491738
Correspondence name and address
LOREN G. HELMREICH
BROWNING BUSHMAN P.C.
5718 WESTHEIMER, SUITE 1800
HOUSTON, TX 77057
Assignment: 9
Reel/Frame:010671/0782   Pages: 20
Recorded: 03/10/2000
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
Exec Dt:
01/20/2000
2
Exec Dt:
01/11/2000
3
Exec Dt:
01/27/2000
4
Exec Dt:
01/25/2000
5
Exec Dt:
01/17/2000
6
Exec Dt:
01/25/2000
7
Exec Dt:
02/12/2000
Assignee
1
6TH FLOOR
4100 CLINTON DRIVE
HOUSTON, TEXAS 77020
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
09453820
Correspondence name and address
FIELD ATKINSON PERRATON
TERRENCE N. KUHARCHUK
2000 OXFORD TOWER
101 STREET
EDMONTON, ALBERTA
Assignment: 10
Reel/Frame:014071/0748   Pages: 25
Recorded: 05/16/2003
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
Exec Dt:
03/25/2003
2
Exec Dt:
03/24/2003
3
Exec Dt:
03/25/2003
4
Exec Dt:
04/10/2003
5
Exec Dt:
03/27/2003
6
Exec Dt:
03/25/2003
7
Exec Dt:
03/25/2003
8
Exec Dt:
03/25/2003
9
Exec Dt:
03/25/2003
10
Exec Dt:
03/25/2003
11
Exec Dt:
03/27/2003
12
Exec Dt:
04/02/2003
13
Exec Dt:
04/07/2003
14
Exec Dt:
03/24/2003
15
Exec Dt:
03/24/2003
16
Exec Dt:
03/21/2003
17
Exec Dt:
03/27/2003
18
Exec Dt:
03/27/2003
19
Exec Dt:
04/03/2003
Assignee
1
10200 BELLAIRE BLVD.
HOUSTON, TEXAS 77072
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
10293013
Correspondence name and address
CONLEY ROSE P.C
DAVID A. ROSE
P.O. BOX 3267
HOUSTON, TX 77253-3267
Assignment: 11
Reel/Frame:026680/0180   Pages: 25
Recorded: 08/01/2011
Attorney Dkt #:1391-27615
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
Exec Dt:
03/25/2003
2
Exec Dt:
03/25/2003
3
Exec Dt:
04/02/2003
4
Exec Dt:
04/07/2003
5
Exec Dt:
03/24/2003
6
Exec Dt:
04/10/2003
7
Exec Dt:
03/27/2003
8
Exec Dt:
03/25/2003
9
Exec Dt:
03/25/2003
10
Exec Dt:
03/25/2003
11
Exec Dt:
03/25/2003
12
Exec Dt:
03/25/2003
13
Exec Dt:
03/27/2003
14
Exec Dt:
04/07/2003
15
Exec Dt:
03/24/2003
16
Exec Dt:
03/21/2003
17
Exec Dt:
03/27/2003
18
Exec Dt:
03/27/2003
19
Exec Dt:
04/03/2003
Assignee
1
10200 BELLAIRE BOULEVARD
HOUSTON, TEXAS 77072
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
12486400
Correspondence name and address
COLLIN A. ROSE
P.O. BOX 3267
HOUSTON, TX 77253-3267
Assignment: 12
Reel/Frame:014241/0368   Pages: 7
Recorded: 01/07/2004
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
Exec Dt:
08/15/2003
2
Exec Dt:
08/15/2003
3
Exec Dt:
08/15/2003
Assignee
1
3000 NORTH SAM HOUSTON PARKWAY EAST
BUILDING J
HOUSTON, TEXAS 770032
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
10641102
Correspondence name and address
TERRENCE N. KUHARCHUK
1501 - 10060 JASPER AVE.
EDMONTON, ALBERTA, CANADA T5J 3R8
Assignment: 13
Reel/Frame:018872/0723   Pages: 4
Recorded: 02/09/2007
Attorney Dkt #:7043-X07-019
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
Exec Dt:
02/06/2007
2
Exec Dt:
02/06/2007
Assignee
1
LYNWORTH HOUSE
54 HIGH STREET
PRESTBURY, CHELTENHEM, UNITED KINGDOM GL 52 3AU
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
11672995
Correspondence name and address
FLEIT KAIN GIBBONS GUTMAN BONGINI&BIANCO
21355 E. DIXIE HIGHWAY
SUITE 115
MIAMI, FL 33180
Assignment: 14
Reel/Frame:018995/0851   Pages: 3
Recorded: 03/12/2007
Attorney Dkt #:ASSIGNMENT
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
Exec Dt:
03/08/2007
2
Exec Dt:
03/08/2007
Assignee
1
UNIT 600, ASHCHURCH BUSINESS CENTRE, ALEXANDRA WAY, ASHCHURCH
TEWKESBURY, UNITED KINGDOM GL20 8TD
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
11630610
Correspondence name and address
WEATHERFORD INTERNATIONAL, INC.
515 POST OAK BLVD.
SUITE 600
HOUSTON, TX 77027
Assignment: 15
Reel/Frame:019664/0093   Pages: 3
Recorded: 08/08/2007
Attorney Dkt #:7043-X07-027
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
Exec Dt:
07/27/2007
2
Exec Dt:
07/27/2007
Assignee
1
LYNWORTH HOUSE, 54 HIGH STREET, PRESTBURY
CHELTENHAM, UNITED KINGDOM GL523AU
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
11772324
Correspondence name and address
PAUL D. BIANCO
21355 EAST DIXIE HIGHWAY, SUITE 115
MIAMI, FL 33180
Assignment: 16
Reel/Frame:022870/0533   Pages: 3
Recorded: 06/24/2009
Attorney Dkt #:135-0092US
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
Exec Dt:
07/11/2008
2
Exec Dt:
07/10/2008
Assignee
1
ASHCHURCH BUSINESS CENTRE, ALEXANDRA WAY
UNIT 600
ASHCHURCH, TEWKESBURY, UNITED KINGDOM GL20 8GA
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
12480104
Correspondence name and address
WONG, CABELLO, LUTSCH, RUTHERFORD & BRUC
20333 SH 249 6TH FLOOR
HOUSTON, TX 77070
Assignment: 17
Reel/Frame:029126/0888   Pages: 3
Recorded: 10/15/2012
Attorney Dkt #:135-0092USC
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
Exec Dt:
07/11/2008
2
Exec Dt:
07/10/2008
Assignee
1
ASHCHURCH BUSINESS CENTRE, ALEXANDRA WAY
UNIT 600
ASHCHURCH, TEWKESBURY, UNITED KINGDOM GL20, 8GA
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
13651545
Correspondence name and address
WONG, CABELLO, LUTSCH, RUTHERFORD & BRUC
20333 STATE HIGHWAY 249
SUITE 600
HOUSTON, TX 77070
Assignment: 18
Reel/Frame:022183/0265   Pages: 3
Recorded: 01/30/2009
Attorney Dkt #:SMAR007
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
Exec Dt:
01/08/2009
Assignee
1
UNIT 600, ASHCHURCH BUSINESS CENTRE
ALEXANDRA WAY, ASHCHURCH
TEWKESBURY, UNITED KINGDOM GL20 8GA
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
12279484
Correspondence name and address
MARK A. OATHOUT
3701 KIRBY DRIVE
SUITE 960
HOUSTON, TX 77098
Assignment: 19
Reel/Frame:022155/0146   Pages: 5
Recorded: 01/26/2009
Attorney Dkt #:SMAR006
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
Exec Dt:
01/20/2009
2
Exec Dt:
01/20/2009
Assignee
1
UNIT 600, ASHCHURCH BUSINESS CENTRE
ALEXANDRA WAY, ASHCHURCH
TEWKESBURY, UNITED KINGDOM GL20 8GA
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
11627555
Correspondence name and address
MARK A. OATHOUT
3701 KIRBY DRIVE
SUITE 960
HOUSTON, TX 77098
Assignment: 20
Reel/Frame:029870/0519   Pages: 5
Recorded: 02/25/2013
Attorney Dkt #:205-432US
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
Exec Dt:
03/08/2012
2
Exec Dt:
02/29/2012
Assignee
1
UNIT 600, ASHCHURCH BUSINESS CENTRE
ALEXANDRA WAY, ASHCHURCH, TEWKESBURY, UNITED KINGDOM GL20 8GA
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
13776185
Correspondence name and address
(WEATHERFORD) WONG CABELLO LUTSCH RUTHER
20333 TOMBALL PARKWAY, 6TH FLOOR
HOUSTON, TX 77070
Assignment: 21
Reel/Frame:038681/0085   Pages: 5
Recorded: 05/23/2016
Attorney Dkt #:205-0432USD
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
Exec Dt:
03/08/2012
2
Exec Dt:
02/29/2012
Assignee
1
ASHCHURCH BUSINESS CENTRE, ALEXANDRA WAY
UNIT 600
ASHCHURCH, TEWSKBURY, GREAT BRITAIN GL20 8GA
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
15161441
Correspondence name and address
WEATHERFORD/PRECISION C/O BLANK ROME LLP
717 TEXAS AVENUE, SUITE 1400
HOUSTON, TX 77002
Assignment: 22
Reel/Frame:029985/0097   Pages: 5
Recorded: 03/13/2013
Attorney Dkt #:205-0439US (5583-US)
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
Exec Dt:
03/15/2012
2
Exec Dt:
03/16/2012
Assignee
1
UNIT 600, ASHCHURCH BUSINESS CENTRE
ALEXANDRA WAY
ASHCHURCH, TEWKESBURY, UNITED KINGDOM GL20 8GA
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
13799755
Correspondence name and address
(WEATHERFORD) WONG CABELLO LUTSCH RUTHER
20333 TOMBALL PARKWAY, 6TH FLOOR
HOUSTON, TX 77070
Assignment: 23
Reel/Frame:035058/0834   Pages: 5
Recorded: 02/20/2015
Attorney Dkt #:205-0575US
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
Exec Dt:
08/24/2012
2
Exec Dt:
08/28/2012
Assignee
1
UNIT 600, ASHCHURCH BUSINESS CENTRE
ALEXANDRA WAY, ASHCHURCH
TEWKESBURY, GREAT BRITAIN GL20 8GA
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
14422841
Correspondence name and address
(WEATHERFORD) WONG CABELLO LUTSCH RUTHER
20333 TOMBALL PARKWAY, 6TH FLOOR
HOUSTON, TX 77070

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