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Patent Assignment Assignor Details
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Assignor Name : KEFI, SLAHEDDINE
Total Assignments: 21
Assignment: 1
Reel/Frame:012414/0411   Pages: 5
Recorded: 11/30/2001
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
GARNIER, ANDRE
Exec Dt:
09/01/2001
2
KEFI, SLAHEDDINE
Exec Dt:
09/05/2001
3
MAROY, PIERRE
Exec Dt:
09/11/2001
4
SCHULZ, JOACHIM
Exec Dt:
11/14/2001
Assignee
1
SCHLUMBERGER TECHNOLOGY CORPORATION
110 SCHLUMBERGER DRIVE
SUGAR LAND, TEXAS 77478
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6874578
NONE
09914331
Correspondence name and address
SCHLUMBERGER TECHNOLOGY CORPORATION
IP DEPT., WELL STIMULATION
110 SCHLUMBERGER DRIVE, MD1
SUGAR LAND, TEXAS 77478
Assignment: 2
Reel/Frame:014377/0124   Pages: 3
Recorded: 03/01/2004
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
DROCHON, BRUNO
Exec Dt:
09/02/2003
2
KEFI, SLAHEDDINE
Exec Dt:
08/21/2003
Assignee
1
SCHLUMBERGER TECHNOLOGY CORPORATION
110 SCHLUMBERGER DRIVE, MD-1
SUGAR LAND, TEXAS 77478
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20040112255
10468042
Correspondence name and address
SCHLUMBERGER TECHNOLOGY CORPORATION
IP DEPT., WELL STIMULATION
110 SCHLUMBERGER DRIVE, MD1
SUGAR LAND, TX 77478
Assignment: 3
Reel/Frame:015484/0242   Pages: 6
Recorded: 12/23/2004
Attorney Dkt #:56.0812
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
FU, DIANKUI
Exec Dt:
10/20/2004
2
PANGA, MOHAN
Exec Dt:
10/13/2004
3
KEFI, SLAHEDDINE
Exec Dt:
10/18/2004
4
GARCIA-LOPEZ DE VICTORIA, MARIELIZ
Exec Dt:
10/14/2004
Assignee
1
SCHLUMBERGER TECHNOLOGY CORPORATION
110 SCHLUMBERGER DRIVE, MD-1
SUGAR LAND, TEXAS 77478
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7237608
US20060081370
10969110
Correspondence name and address
SCHLUMBERGER TECHNOLOGY CORPORATION
IP DEPT., WELL STIMULATION
110 SCHLUMBERGER DRIVE, MD1
SUGAR LAND, TX 77478
Assignment: 4
Reel/Frame:017085/0023   Pages: 8
Recorded: 01/30/2006
Attorney Dkt #:56.0876
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
FULLER, MICHAEL J.
Exec Dt:
11/29/2005
2
FU, DIANKUI
Exec Dt:
11/30/2005
3
GARCIA-LOPEZ DE VICTORIA, MARIELIZ
Exec Dt:
01/24/2006
4
KEFI, SLAHEDDINE
Exec Dt:
11/30/2005
5
PANGA, MOHAN K.R.
Exec Dt:
11/30/2005
Assignee
1
SCHLUMBERGER TECHNOLOGY CORPORATION
110 SCHLUMBERGER DRIVE, MD-1
SUGAR LAND, TEXAS 77478
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7575054
US20060118302
11280749
Correspondence name and address
SCHLUMBERGER TECHNOLOGY CORPORATION
IP DEPT., WELL STIMULATION
110 SCHLUMBERGER DRIVE, MD1
SUGAR LAND, TX 77478
Assignment: 5
Reel/Frame:023049/0001   Pages: 12
Recorded: 08/04/2009
Attorney Dkt #:57.0873 US NP
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
COCHET, THOMAS
Exec Dt:
07/28/2009
2
HUGHES, TREVOR
Exec Dt:
07/31/2009
3
KEFI, SLAHEDDINE
Exec Dt:
07/22/2009
4
LAFITTE, VALERIE
Exec Dt:
08/03/2009
5
TAN, KHOOI
Exec Dt:
07/31/2009
6
TUSTIN, GARY
Exec Dt:
07/23/2009
7
WANG, SHIYI
Exec Dt:
07/22/2009
Assignee
1
SCHLUMBERGER TECHNOLOGY CORPORATION
ONE HAMPSHIRE STREET
CAMBRIDGE, MASSACHUSETTS 02139
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8393395
US20100307744
12477442
Correspondence name and address
SCHLUMBERGER TECHNOLOGY CORPORATION
ONE HAMPSHIRE STREET
CAMBRIDGE, MA 02139
Assignment: 6
Reel/Frame:023049/0094   Pages: 11
Recorded: 08/04/2009
Attorney Dkt #:57.0858 US NP
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
LAFITTE, VALERIE
Exec Dt:
08/03/2009
2
HUGHES, TREVOR
Exec Dt:
07/31/2009
3
KEFI, SLAHEDDINE
Exec Dt:
07/22/2009
4
MILLER, MATTHEW
Exec Dt:
07/24/2009
5
TUSTIN, GARY
Exec Dt:
07/23/2009
6
WANG, SHIYI
Exec Dt:
07/22/2009
Assignee
1
SCHLUMBERGER TECHNOLOGY CORPORATION
ONE HAMPSHIRE STREET
CAMBRIDGE, MASSACHUSETTS 02139
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
9290689
US20100307745
12477502
Correspondence name and address
SCHLUMBERGER TECHNOLOGY CORPORATION
ONE HAMPSHIRE STREET
CAMBRIDGE, MA 02139
Assignment: 7
Reel/Frame:024853/0417   Pages: 10
Recorded: 08/18/2010
Attorney Dkt #:21.1764
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
SHINDGIKAR, NIKHIL
Exec Dt:
07/12/2010
2
LEE, JESSE
Exec Dt:
07/05/2010
3
KEFI, SLAHEDDINE
Exec Dt:
08/11/2010
4
CAMBUS-BRUNET, CHRYSTEL
Exec Dt:
07/02/2010
5
ERMEL, MICHEL
Exec Dt:
07/14/2010
Assignee
1
SCHLUMBERGER TECHNOLOGY CORPORATION
110 SCHLUMBERGER DRIVE
SUGAR LAND, TEXAS 77478
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8371381
US20100307747
12783232
Correspondence name and address
DAVID CATE
555 INDUSTRIAL BLVD
SUGAR LAND, TX 77478
Assignment: 8
Reel/Frame:025487/0269   Pages: 5
Recorded: 12/14/2010
Attorney Dkt #:21.1854
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
KEFI, SLAHEDDINE
Exec Dt:
10/15/2010
Assignee
1
SCHLUMBERGER TECHNOLOGY CORPORATION
110 SCHLUMBERGER DRIVE
SUGAR LAND, TEXAS 77478
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20120090835
12903529
Correspondence name and address
RACHEL E. GREENE
110 SCHLUMBERGER DR., MD-1
SUGAR LAND, TX 77478
Assignment: 9
Reel/Frame:025826/0881   Pages: 8
Recorded: 02/17/2011
Attorney Dkt #:21.1576
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
SHINDGIKAR, NIKHIL
Exec Dt:
12/09/2010
2
LEE, JESSE
Exec Dt:
01/06/2011
3
KEFI, SLAHEDDINE
Exec Dt:
12/06/2010
Assignee
1
SCHLUMBERGER TECHNOLOGY CORPORATION
110 SCHLUMBERGER DRIVE
SUGAR LAND, TEXAS 77478
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8689869
US20110139454
12997173
Correspondence name and address
DAVID CATE
110 SCHLUMBERGER DRIVE, MD-1
SUGAR LAND, TX 77478
Assignment: 10
Reel/Frame:026141/0499   Pages: 9
Recorded: 04/18/2011
Attorney Dkt #:21.1601
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
LEE, JESSE
Exec Dt:
03/28/2011
2
BOULARD, STEPHANE
Exec Dt:
03/30/2011
3
SHINDGIKAR, NIKHIL
Exec Dt:
03/25/2011
4
KEFI, SLAHEDDINE
Exec Dt:
03/28/2011
Assignee
1
SCHLUMBERGER TECHNOLOGY CORPORATION
110 SCHLUMBERGER DRIVE
SUGAR LAND, TEXAS 77478
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20110237465
13056217
Correspondence name and address
DAVID CATE
555 INDUSTRIAL BLVD
SUGAR LAND, TX 77478
Assignment: 11
Reel/Frame:027983/0043   Pages: 14
Recorded: 04/03/2012
Attorney Dkt #:21.1841 US ASSIGNMENT
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
AUZERAIS, FRANCOIS M
Exec Dt:
01/11/2012
2
OMERAGIC, DZEVAT
Exec Dt:
01/11/2012
3
KEFI, SLAHEDDINE
Exec Dt:
01/11/2012
4
HOMAN, DEAN M.
Exec Dt:
01/12/2012
5
HORKOWITZ, JOHN P.
Exec Dt:
01/25/2012
6
VIDICK, BENOIT
Exec Dt:
01/16/2012
7
MALARD, DOMINIQUE
Exec Dt:
02/17/2012
8
UTTER, ROBERT
Exec Dt:
01/11/2012
9
HAWTHORN, ANDREW
Exec Dt:
02/28/2012
Assignee
1
SCHLUMBERGER TECHNOLOGY CORPORATION
300 SCHLUMBERGER DRIVE
SUGAR LAND, TEXAS 77478
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20130160998
13335983
Correspondence name and address
SCHLUMBERGER - COE
WESTERNGECO 10001 RICHMOND AVE.
ROOM 3028
HOUSTON, TX 77042
Assignment: 12
Reel/Frame:028115/0164   Pages: 9
Recorded: 04/26/2012
Attorney Dkt #:21.1959 US ASSIGNMENT
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
LEE, JESSE C.
Exec Dt:
04/16/2012
2
BOULARD, STEPHANE
Exec Dt:
04/12/2012
3
SHINDGIKAR, NIKHIL
Exec Dt:
04/12/2012
4
KEFI, SLAHEDDINE
Exec Dt:
03/26/2012
Assignee
1
SCHLUMBERGER TECHNOLOGY CORPORATION
300 SCHLUMBERGER DRIVE
SUGAR LAND, TEXAS 77478
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8991497
US20120205102
13402866
Correspondence name and address
SCHLUMBERGER - COE
WESTERNGECO 10001 RICHMOND AVE.
ROOM 3028
HOUSTON, TX 77042
Assignment: 13
Reel/Frame:028464/0945   Pages: 10
Recorded: 06/28/2012
Attorney Dkt #:21.1876 US ASSIGNMENT
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
PERSHIKOVA, ELENA
Exec Dt:
06/12/2012
2
PORCHERIE, OLIVIER
Exec Dt:
06/15/2012
3
KEFI, SLAHEDDINE
Exec Dt:
06/13/2012
4
BOUBEGUIRA, YAMINA
Exec Dt:
06/27/2012
5
ACHTAL, HAFIDA
Exec Dt:
06/13/2012
Assignee
1
SCHLUMBERGER TECHNOLOGY CORPORATION
300 SCHLUMBERGER DRIVE
SUGAR LAND, TEXAS 77478
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8535437
US20120260829
13511640
Correspondence name and address
SCHLUMBERGER - COE
WESTERNGECO 10001 RICHMOND AVE.
ROOM 3028
HOUSTON, TX 77042
Assignment: 14
Reel/Frame:028465/0111   Pages: 10
Recorded: 06/28/2012
Attorney Dkt #:21.1879 US ASSIGNMENT
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
PERSHIKOVA, ELENA
Exec Dt:
06/12/2012
2
PORCHERIE, OLIVIER
Exec Dt:
06/11/2012
3
KEFI, SLAHEDDINE
Exec Dt:
06/13/2012
4
BOUBEGUIRA, YAMINA
Exec Dt:
06/27/2012
5
ACHTAL, HAFIDA
Exec Dt:
06/13/2012
Assignee
1
SCHLUMBERGER TECHNOLOGY CORPORATION
300 SCHLUMBERGER DRIVE
SUGAR LAND, TEXAS 77478
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
9206343
US20120267106
13511145
Correspondence name and address
SCHLUMBERGER - COE
WESTERNGECO 10001 RICHMOND AVE.
ROOM 3028
HOUSTON, TX 77042
Assignment: 15
Reel/Frame:028582/0976   Pages: 9
Recorded: 07/19/2012
Attorney Dkt #:21.1658 US ASSIGNMENT
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
KEFI, SLAHEDDINE
Exec Dt:
06/13/2012
2
LEE, JESSE C.
Exec Dt:
07/06/2012
3
BRUNET-CAMBUS, CHRYSTEL
Exec Dt:
06/12/2012
4
SHINDGIKAR, NIKHIL
Exec Dt:
06/18/2012
Assignee
1
SCHLUMBERGER TECHNOLOGY CORPORATION
300 SCHLUMBERGER DRIVE
SUGAR LAND, TEXAS 77478
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
9896612
US20120322695
13511144
Correspondence name and address
SCHLUMBERGER - COE
WESTERNGECO 10001 RICHMOND AVE.
ROOM 3028
HOUSTON, TX 77042
Assignment: 16
Reel/Frame:030937/0846   Pages: 12
Recorded: 07/25/2013
Attorney Dkt #:21.1876USPCT ASSIGNMENT
Conveyance: CORRECTIVE ASSIGNMENT TO CORRECT THE APPLICATION NUMBER OF 13511549 TO 13511640 PREVIOUSLY RECORDED ON REEL 028464 FRAME 0945. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT DOCUMENT.
Assignors
1
PERSIKOVA, ELENA
Exec Dt:
06/12/2012
2
PORCHERIE, OLIVIER
Exec Dt:
06/15/2012
3
KEFI, SLAHEDDINE
Exec Dt:
06/13/2012
4
BOUBEGUIRA, YAMINA
Exec Dt:
06/27/2012
5
ACHTAL, HAFIDA
Exec Dt:
06/13/2012
Assignee
1
SCHLUMBERGER TECHNOLOGY CORPORATION
300 SCHLUMBERGER DRIVE
SUGAR LAND, TEXAS 77478
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8535437
US20120260829
13511640
Correspondence name and address
SCHLUMBERGER - COE
WESTERNGECO 10001 RICHMOND AVE.
ROOM 3028
HOUSTON, TX 77042
Assignment: 17
Reel/Frame:033043/0924   Pages: 11
Recorded: 06/06/2014
Attorney Dkt #:IS13.3582 USNP ASSIGNMENT
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
BARRAL, QUENTIN
Exec Dt:
06/05/2014
2
CHOUGNET-SIRAPIAN, ALICE
Exec Dt:
06/02/2014
3
DARGAUD, BERNARD
Exec Dt:
06/02/2014
4
BENNANI, NORA
Exec Dt:
06/02/2014
5
ZAMORA, DOMINIQUE
Exec Dt:
06/05/2014
6
KEFI, SLAHEDDINE
Exec Dt:
06/02/2014
Assignee
1
SCHLUMBERGER TECHNOLOGY CORPORATION
300 SCHLUMBERGER DRIVE
SUGAR LAND, TEXAS 77478
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
9528365
US20140352948
14283234
Correspondence name and address
SCHLUMBERGER - COE
WESTERNGECO 10001 RICHMOND AVE.
ROOM 3028
HOUSTON, TX 77042
Assignment: 18
Reel/Frame:036116/0968   Pages: 8
Recorded: 07/16/2015
Attorney Dkt #:IS13.3459USPCT ASSIGNMENT
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
KEFI, SLAHEDDINE
Exec Dt:
05/22/2015
2
BENNANI, NORA
Exec Dt:
06/30/2015
3
TOMILINA, ELENA
Exec Dt:
07/05/2015
Assignee
1
SCHLUMBERGER TECHNOLOGY CORPORATION
300 SCHLUMBERGER DRIVE
SUGAR LAND, TEXAS 77478
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20150240142
14437498
Correspondence name and address
SCHLUMBERGER - COE
WESTERNGECO 10001 RICHMOND AVE.
ROOM 3028
HOUSTON, TX 77042
Assignment: 19
Reel/Frame:036789/0334   Pages: 5
Recorded: 10/14/2015
Attorney Dkt #:IS12.2533-US-PCT
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
KEFI, SLAHEDDINE
Exec Dt:
05/22/2015
Assignee
1
SCHLUMBERGER TECHNOLOGY CORPORATION
300 SCHLUMBERGER DRIVE
SUGAR LAND, TEXAS 77478
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20160060500
14783108
Correspondence name and address
KRISTINE DUMAS-SCARBER
10001 RICHMOND AVENUE
ROOM 4720
HOUSTON, TX 77042
Assignment: 20
Reel/Frame:036787/0645   Pages: 5
Recorded: 10/14/2015
Attorney Dkt #:IS12.3125-US-PCT
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
KEFI, SLAHEDDINE
Exec Dt:
10/13/2015
Assignee
1
SCHLUMBERGER TECHNOLOGY CORPORATION
300 SCHLUMBERGER DRIVE
SUGAR LAND, TEXAS 77478
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20160060502
14783532
Correspondence name and address
KRISTINE DUMAS-SCARBER
10001 RICHMOND AVENUE
ROOM 4720
HOUSTON, TX 77042
Assignment: 21
Reel/Frame:043167/0726   Pages: 9
Recorded: 08/02/2017
Attorney Dkt #:IS14.8854-US-PCT
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
BARRAL, QUENTIN
Exec Dt:
06/20/2017
2
DROGER, NICOLAS
Exec Dt:
06/19/2017
3
KEFI, SLAHEDDINE
Exec Dt:
06/20/2017
4
REGNAULT DE LA MOTHE, LOIC
Exec Dt:
06/21/2017
Assignee
1
SCHLUMBERGER TECHNOLOGY CORPORATION
300 SCHLUMBERGER DRIVE
SUGAR LAND, TEXAS 77478
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
11091686
US20180010032
15542973
Correspondence name and address
KRISTINE DUMAS-SCARBER
10001 RICHMOND AVENUE
ROOM 4720
HOUSTON, TX 77042

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