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Patent Assignment Assignor Details
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Assignor Name : KOSTEK, SERGIO
Total Assignments: 8
Assignment: 1
Reel/Frame:005771/0229   Pages: 3
Recorded: 07/19/1991
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignor
1
KOSTEK, SERGIO
Exec Dt:
07/16/1991
Assignee
1
SCHLUMBERGER TECHNOLOGY CORPORATION
A CORPORATION OF TX
277 PARK AVE.,
NEW YORK, NEW YORK 10172
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5309404
NONE
07722321
Correspondence name and address
MARC D. FOODMAN
SCHLUMBERGER-DOLL RESEARCH
OLD QUARRY RD.
RIDGEFIELD, CT 06877-4108
Assignment: 2
Reel/Frame:006038/0261   Pages: 4
Recorded: 03/13/1992
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignors
1
KOSTEK, SERGIO
Exec Dt:
03/04/1992
2
CHANG, SHU-KUNG
Exec Dt:
03/04/1992
3
MCDANIEL, GORDON
Exec Dt:
02/24/1992
4
PLONA, THOMAS
Exec Dt:
03/04/1992
5
RANDALL, CURTIS
Exec Dt:
02/24/1992
Assignee
1
SCHLUMBERGER TECHNOLOGY CORPORATION
A CORPORATION OF TX
5000 GULF FREEWAY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5852587
NONE
07839969
Correspondence name and address
LETICIA V. SALAS
200 MACCO BLVD.
SUGAR LAND, TX 77478
Assignment: 3
Reel/Frame:006856/0745   Pages: 3
Recorded: 02/16/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
JOHNSON, DAVID L.
Exec Dt:
12/01/1993
2
KOSTEK, SERGIO
Exec Dt:
12/08/1993
3
NORRIS, ANDREW
Exec Dt:
12/01/1993
Assignee
1
SCHLUMBERGER-DOLL RESEARCH
OLD QUARRY ROAD
RIDGEFIELD, CONNECTICUT 06877-4108
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5485431
NONE
08154645
Correspondence name and address
SCHLUMBERGER-DOLL RESEARCH
LEONARD W. POJUNAS
OLD QUARRY ROAD
RIDGEFIELD, CT 06877-4108
Assignment: 4
Reel/Frame:006990/0707   Pages: 2
Recorded: 05/17/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
KOSTEK, SERGIO
Exec Dt:
04/13/1994
2
SINHA, BIKASH K.
Exec Dt:
04/13/1994
Assignee
1
SCHLUMBERGER TECHNOLOGY CORPORATION
SCHLUMBERGER-DOLL RESEARCH
OLD QUARRY ROAD
RIDGEFIELD, CONNECTICUT 06877-4108
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5398215
NONE
08225016
Correspondence name and address
SCHLUMBERGER-DOLL RESEARCH
LEONARD W. POJUNAS
OLD QUARRY ROAD
RIDGEFIELD, CT 06877-4108
Assignment: 5
Reel/Frame:007022/0230   Pages: 7
Recorded: 06/06/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
KOSTEK, SERGIO
Exec Dt:
05/09/1994
2
CHANG, SHU-KONG
Exec Dt:
06/02/1994
3
MCDANIEL, GORDON L.
Exec Dt:
05/19/1994
4
PLONA, THOMAS
Exec Dt:
05/18/1994
5
RANDALL, CURTIS
Exec Dt:
06/01/1994
6
MASSON, JEAN-PIERRE
Exec Dt:
06/02/1994
7
MAYES, JAMES C.
Exec Dt:
06/02/1994
8
HSU, KAI
Exec Dt:
06/02/1994
Assignee
1
SCHLUMBERGER TECHNOLOGY CORPORATION
5000 GULF FREEWAY
HOUSTON, TEXAS 77023
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5796677
NONE
08235625
Correspondence name and address
PATENT COUNSEL
ANADRILL SCHLUMBERGER
200 GILLINGHAM LANE
SUGAR LAND, TEXAS 77478
Assignment: 6
Reel/Frame:007136/0525   Pages: 3
Recorded: 09/19/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
SINHA, BIKASH K.
Exec Dt:
09/01/1994
2
KOSTEK, SERGIO
Exec Dt:
09/01/1994
Assignee
1
SCHLUMBERGER TECHNOLOGY CORPORATION
OLD QUARRY ROAD
RIDGEFIELD, CONNECTICUT 06877
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5475650
NONE
08298900
Correspondence name and address
PATENT DEPARTMENT
SCHLUMBERGER-DOLL RESEARCH
OLD QUARRY ROAD
RIDGEFIELD, CT 06877
ATTN: LEONARD W. POJUNAS
Assignment: 7
Reel/Frame:007136/0531   Pages: 4
Recorded: 09/19/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
D'ANGELO, RALPH
Exec Dt:
09/01/1994
2
KIMBALL, CHRISTOPHER V.
Exec Dt:
09/01/1994
3
KOSTEK, SERGIO
Exec Dt:
09/09/1994
4
PLONA, THOMAS J.
Exec Dt:
09/02/1994
5
WINKLER, KENNETH W.
Exec Dt:
09/07/1994
Assignee
1
SCHLUMBERGER TECHNOLOGY CORPORATION
OLD QUARRY ROAD
RIDGEFIELD, CONNECTICUT 06877
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5521882
NONE
08298919
Correspondence name and address
PATENT DEPARTMENT
SCHLUMBERGER-DOLL RESEARCH
OLD QUARRY ROAD
RIDGEFIELD, CT 06877
ATTN: LEONARD W. POJUNAS
Assignment: 8
Reel/Frame:007746/0155   Pages: 3
Recorded: 10/23/1995
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
HSU, CHUAR-JIAN
Exec Dt:
09/15/1995
2
JOHNSON, DAVID L.
Exec Dt:
09/15/1995
3
KOSTEK, SERGIO
Exec Dt:
09/16/1995
4
OUNADJELA, ABDERRHAMANE
Exec Dt:
09/12/1995
Assignee
1
SCHLUMBERGER TECHNOLOGY CORPORATION
OLD QUARRY ROAD
RIDGEFIELD, CONNECTICUT 06877
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5646379
NONE
08527736
Correspondence name and address
SCHLUMBERGER-DOLL RESEARCH
MARTIN D. HYDEN
PATENT DEPARTMENT
OLD QUARRY ROAD
RIDGEFIELD, CT 06877

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