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Patent Assignment Assignor Details
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Assignor Name : SAWDON, CHRISTOPHER ALAN
Total Assignments: 11
Assignment: 1
Reel/Frame:007731/0104   Pages: 2
Recorded: 07/31/1995
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
SAWDON, CHRISTOPHER ALAN
Exec Dt:
01/06/1995
Assignee
1
DOWELL SCHLUMBERGER INCORPORATED
P.O. BOX 4610
HOUSTON, TEXAS 77478
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5627143
NONE
08379608
Correspondence name and address
WOLF, GREENFIELD & SACKS
DAVID M. DRISCOLL
FEDERAL RESERVE PLAZA
600 ATLANTIC AVENUE
BOSTON, MA 02210
Assignment: 2
Reel/Frame:008221/0202   Pages: 4
Recorded: 07/29/1996
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
SAWDON, CHRISTOPHER ALAN
Exec Dt:
07/02/1996
Assignee
1
DOWELL
A DIVISION OF SCHLUMBERGER TECHNOLOGY CORP
110 SCHLUMBERGER DRIVE
SUGAR LAND, TEXAS 77478
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5962375
NONE
08646245
Correspondence name and address
PATENT COUNSEL
DOWELL
110 SCHLUMBERGER DRIVE
SUGAR LAND, TX 77478
ATTN: ALBERT J. ADAMCIK
Assignment: 3
Reel/Frame:021353/0374   Pages: 3
Recorded: 07/30/2008
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
DUNCUM, SIMON
Exec Dt:
01/30/2007
2
SAWDON, CHRISTOPHER ALAN
Exec Dt:
01/23/2007
Assignee
1
BP EXPLORATION OPERATING COMPANY LIMITED
CHERTSEY ROAD, SUNBURY-ON-THAMES
MIDDLESEX, UNITED KINGDOM TW16 7BP
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7854277
US20090008095
12223391
Correspondence name and address
LEONARD C. MITCHARD
NIXON & VANDERHYE P.C.
901 NORTH GLEBE ROAD, 11TH FLOOR
ARLINGTON, VIRGINIA 22203
Assignment: 4
Reel/Frame:022044/0032   Pages: 2
Recorded: 12/23/2008
Attorney Dkt #:CLM-608-590
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
DUNCUM, SIMON NEIL
Exec Dt:
05/22/2007
2
SAWDON, CHRISTOPHER ALAN
Exec Dt:
05/24/2007
Assignee
1
BP EXPLORATION OPERATING COMPANY LIMITED
CHERTSEY ROAD, SUNBURY-ON-THAMES
MIDDLESEX, UNITED KINGDOM TW16 7BP
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7943554
US20100016179
12308743
Correspondence name and address
LEONARD C. MITCHARD
NIXON & VANDERHYE P.C.
901 NORTH GLEBE ROAD
11TH FLOOR
ARLINGTON, VA 22203
Assignment: 5
Reel/Frame:022055/0299   Pages: 2
Recorded: 12/23/2008
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
DUNCUM, SIMON NEIL
Exec Dt:
06/19/2007
2
SAWDON, CHRISTOPHER ALAN
Exec Dt:
06/21/2007
Assignee
1
BP EXPLORATION OPERATING COMPANY LIMITED
CHERTSEY ROAD, SUNBURY-ON-THAMES
MIDDLESEX, UNITED KINGDOM TW16 7BP
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7919437
US20090247428
12308760
Correspondence name and address
LEONARD C. MITCHARD
NIXON & VANDERHYE P.C.
901 NORTH GLEBE ROAD
11TH FLOOR
ARLINGTON, VA 22203
Assignment: 6
Reel/Frame:022901/0757   Pages: 2
Recorded: 07/01/2009
Attorney Dkt #:LCM608-595
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
SAWDON, CHRISTOPHER ALAN
Exec Dt:
08/03/2007
Assignee
1
EP EXPLORATION OPERATING COMPANY LIMITED
CHERTSEY ROAD, SUNBURY-ON-THAMES
MIDDLESEX, UNITED KINGDOM TW16 7BP
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20090291861
12309928
Correspondence name and address
NIXON & VANDERHYE
901 NORTH GLEBE ROAD, 11TH FLOOR
ARLINGTON, VA 22203
Assignment: 7
Reel/Frame:022933/0063   Pages: 3
Recorded: 07/08/2009
Attorney Dkt #:LCM-608-595
Conveyance: CORRECTIVE ASSIGNMENT TO CHANGE ASSIGNEE NAME TO "BP EXPLORATION OPERATING COMPANY LIMITED" PREVIOUSLY RECORDED AT REEL 022901 FRAME 0757.
Assignor
1
SAWDON, CHRISTOPHER ALAN
Exec Dt:
08/03/2007
Assignee
1
BP EXPLORATION OPERATING COMPANY LIMITED
CHERTSEY ROAD, SUNBURY-ON-THAMES
MIDDLESEX, UNITED KINGDOM TW16 7BP
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20090291861
12309928
Correspondence name and address
LEONARD C. MITCHARD
NIXON & VANDERHYE P.C.
901 NORTH GLEBE ROAD
11TH FLOOR
ARLINGTON, VA 22203
Assignment: 8
Reel/Frame:023160/0894   Pages: 9
Recorded: 08/28/2009
Attorney Dkt #:57.0539 US PCT
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
SAWDON, CHRISTOPHER ALAN
Exec Dt:
01/18/2008
2
LADVA, HERMANT KUMAR JETHALAL
Exec Dt:
01/08/2008
3
JONES, TIMOTHY GARETH JOHN
Exec Dt:
01/11/2008
4
TUSTIN, GARY JOHN
Exec Dt:
01/11/2008
Assignee
1
SCHLUMBERGER TECHNOLOGY CORPORATION
ONE HAMPSHIRE STREET
CAMBRIDGE, MASSACHUSETTS 02139
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8122959
US20100065273
11993353
Correspondence name and address
SCHLUMBERGER TECHNOLOGY CORPORATION
ONE HAMPSHIRE STREET
CAMBRIDGE, MA 02139
Assignment: 9
Reel/Frame:026305/0607   Pages: 2
Recorded: 05/19/2011
Attorney Dkt #:LCM-608-683
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
SAWDON, CHRISTOPHER ALAN
Exec Dt:
04/15/2011
Assignee
1
BP EXPLORATION OPERATING COMPANY LIMITED
CHERTSEY ROAD, SUNBURY-ON-THAMES
MIDDLESEX, UNITED KINGDOM TW16 7BP
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20110146983
12737548
Correspondence name and address
NIXON & VANDERHYE
901 NORTH GLEBE ROAD, 11TH FLOOR
ARLINGTON, VA 22203
Assignment: 10
Reel/Frame:031562/0366   Pages: 3
Recorded: 11/07/2013
Attorney Dkt #:LCM-608-752
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
ASTON, MARK SHELTON
Exec Dt:
11/29/2011
2
GEORGE, MARY ANN
Exec Dt:
05/23/2011
3
SAWDON, CHRISTOPHER ALAN
Exec Dt:
12/02/2011
Assignee
1
BP EXPLORATION OPERATING COMPANY LIMITED
CHERTSEY ROAD, SUNBURY ON THAMES
MIDDLESEX, UNITED KINGDOM TW16 7BP
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20140076635
14116222
Correspondence name and address
NIXON & VANDERHYE
901 NORTH GLEBE ROAD, 11TH FLOOR
ARLINGTON, VA 22203
Assignment: 11
Reel/Frame:028424/0087   Pages: 2
Recorded: 06/22/2012
Attorney Dkt #:LCM-608-649
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
SAWDON, CHRISTOPHER ALAN
Exec Dt:
06/21/2012
Assignee
1
BP EXPLORATION OPERATING COMPANY LIMITED
CHERTSEY ROAD, SUNBURY ON THAMES
MIDDLESEX, UNITED KINGDOM TW16 7BP
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8242059
US20100248996
12734033
Correspondence name and address
NIXON & VANDERHYE
901 NORTH GLEBE ROAD, 11TH FLOOR
ARLINGTON, VA 22203

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