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Patent Assignment Assignor Details
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Assignor Name : LEVIN, STEWART A.
Total Assignments: 9
Assignment: 1
Reel/Frame:005380/0592   Pages: 2
Recorded: 07/16/1990
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignor
1
LEVIN, STEWART A.
Exec Dt:
07/10/1990
Assignee
1
MOBIL OIL CORPORATION, A NY CORP.
NEW YORK
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5051960
NONE
07553061
Correspondence name and address
CHARLES J. SPECIALE
MOBIL OIL CORP.,
OFFICE OF PATENT COUNSEL
3225 GALLOWS ROAD
FAIRFAX, VA 22037
Assignment: 2
Reel/Frame:013817/0001   Pages: 3
Recorded: 02/26/2003
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
LEVIN, STEWART A.
Exec Dt:
02/21/2003
Assignee
1
LANDMARK GRAPHICS CORPORATION
15150 MEMORIAL DRIVE
HOUSTON, TEXAS 77079
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6735527
NONE
10374368
Correspondence name and address
MEYERTONS, HOOD, KIVLIN ET AL.
JEFFREY C. HOOD
P.O. BOX 398
AUSTIN, TX 78767-0398
Assignment: 3
Reel/Frame:021119/0034   Pages: 3
Recorded: 06/19/2008
Attorney Dkt #:33849-199
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
LEVIN, STEWART A.
Exec Dt:
03/24/2008
Assignee
1
LANDMARK GRAPHICS CORPORATION, A HALLIBURTON COMPANY
P. O. BOX 42806
HOUSTON, TEXAS 77242
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7843766
US20090238041
12054159
Correspondence name and address
CRAIN CATON & JAMES
1401 MCKINNEY, STE. 1700
ATTN: WILLIAM P. JENSEN
HOUSTON, TX 77010
Assignment: 4
Reel/Frame:022734/0137   Pages: 3
Recorded: 05/26/2009
Attorney Dkt #:5460-01604
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
LEVIN, STEWART A.
Exec Dt:
05/22/2009
Assignee
1
LANDMARK GRAPHICS CORPORATION
2107 CITYWEST BLVD., BLDG. 2
HOUSTON, TEXAS 77042-3051
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8045417
US20090228255
12471918
Correspondence name and address
MEYERTONS, HOOD, KIVLIN, KOWERT & GOETZE
P.O. BOX 398
AUSTIN, TX 78767-0398
Assignment: 5
Reel/Frame:026812/0047   Pages: 3
Recorded: 08/26/2011
Attorney Dkt #:5460-02000
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
LEVIN, STEWART A.
Exec Dt:
05/22/2009
Assignee
1
LANDMARK GRAPHICS CORPORATION
2101 CITYWEST BLVD., BLDG. 2
HOUSTON, TEXAS 77042
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8233351
US20110313667
13218489
Correspondence name and address
MEYERTONS, HOOD, KIVLIN, KOWERT & GOETZE
P.O. BOX 398
AUSTIN, TX 78767-0398
Assignment: 6
Reel/Frame:024375/0340   Pages: 7
Recorded: 05/12/2010
Attorney Dkt #:17908-0017001
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
CULLICK, ALVIN S.
Exec Dt:
04/06/2010
2
FARABEE, LELDON M.
Exec Dt:
04/14/2010
3
WARPINSKI, NORM R.
Exec Dt:
04/07/2010
4
SHELLEY, ROBERT F.
Exec Dt:
04/13/2010
5
LEVIN, STEWART A.
Exec Dt:
04/30/2010
Assignee
1
HALLIBURTON ENERGY SERVICES, INC.
10200 BELLAIRE BLVD.
HOUSTON, TEXAS 77072
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20110277996
12777965
Correspondence name and address
FISH & RICHARDSON P.C.
1717 MAIN
SUITE 5000
DALLAS, TX 75201
Assignment: 7
Reel/Frame:024934/0583   Pages: 8
Recorded: 09/02/2010
Attorney Dkt #:2009-IP-028211U1
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
LEVIN, STEWART A.
Exec Dt:
07/02/2010
2
DUSTERHOFT, RON G.
Exec Dt:
07/01/2010
3
LONGBOTTOM, JIM
Exec Dt:
09/01/2010
4
WARPINSKI, NORMAN R.
Exec Dt:
06/30/2010
5
VICK, JAMES D., JR.
Exec Dt:
06/30/2010
Assignee
1
HALLIBURTON ENERGY SERVICES, INC.
10200 BELLAIRE BOULEVARD
HOUSTON, TEXAS 77072
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20120055669
12874917
Correspondence name and address
JOHN W. WUSTENBERG
P.O. BOX 1431
DUNCAN, OK 73536
Assignment: 8
Reel/Frame:027181/0374   Pages: 5
Recorded: 11/04/2011
Attorney Dkt #:33849-125
Conveyance: CORRECTIVE ASSIGNMENT TO CORRECT THE ASSIGNEE PREVIOUSLY RECORDED ON REEL 020509 FRAME 0884. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT.
Assignor
1
LEVIN, STEWART A.
Exec Dt:
05/23/2011
Assignee
1
LANDMARK GRAPHICS CORPORATION
P. O. BOX 42806
HOUSTON, TEXAS 77242
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7702463
US20090157322
11954596
Correspondence name and address
CRAIN CATON & JAMES
1401 MCKINNEY, SUITE 1700
HOUSTON, TX 77010
Assignment: 9
Reel/Frame:027181/0665   Pages: 5
Recorded: 11/06/2011
Attorney Dkt #:33849-199
Conveyance: CORRECTIVE ASSIGNMENT TO CORRECT THE ASSIGNEE PREVIOUSLY RECORDED ON REEL 021119 FRAME 0034. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT.
Assignor
1
LEVIN, STEWART A.
Exec Dt:
05/23/2011
Assignee
1
LANDMARK GRAPHICS CORPORATION
P. O. BOX 42806
HOUSTON, TEXAS 77242
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7843766
US20090238041
12054159
Correspondence name and address
CRAIN CATON & JAMES
1401 MCKINNEY, SUITE 1700
ATTN: W. P. JENSEN
HOUSTON, TX 77010

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