skip navigationU S P T O SealUnited States Patent and Trademark Office AOTW logo
Home|Site Index|Search|Guides|Contacts|eBusiness|eBiz alerts|News|Help
Assignments on the Web > Patent Query
Patent Assignment Assignor Details
NOTE:Results display only for issued patents and published applications. For pending or abandoned applications please consult USPTO staff.

Assignor Name : TCHAKAROV, BORISLAV J.
Total Assignments: 24
Assignment: 1
Reel/Frame:008471/0004   Pages: 3
Recorded: 04/21/1997
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
EARL, LEON M.
Exec Dt:
01/12/1996
2
TCHAKAROV, BORISLAV J.
Exec Dt:
01/12/1996
Assignee
1
BOB FOURNET COMPANY, THE
311 WALL STREET
LAFAYETTE, LOUISIANA 70506
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5660238
NONE
08585799
Correspondence name and address
JESSE D. LAMBERT
P.O. BOX 3507
102 VERSAILLES BOULEVARD
SUITE 600
LAFAYETTE, LA 70502
Assignment: 2
Reel/Frame:008728/0077   Pages: 2
Recorded: 07/16/1997
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
TCHAKAROV, BORISLAV J.
Exec Dt:
07/07/1997
Assignee
1
COMPUTALOG LIMITED
2140, 53 8THG AVENUE, G.W.
CALGARY, ALBERTA, CANADA T2P 3
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5836388
NONE
08893330
Correspondence name and address
FELSMAN, BRADLEY, GUNTER & DILLON, LLP
JAMES E. BRADLEY
9505 ARBORETUM BLVD., #350
AUSTIN, TX 78759
Assignment: 3
Reel/Frame:008737/0431   Pages: 2
Recorded: 08/07/1997
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
TCHAKAROV, BORISLAV J.
Exec Dt:
07/28/1997
Assignee
1
COMPUTALOG LIMITED
2140, 53 8TH AVENUE, GW
CALGARY, ALBERTA, CANADA T2P 3
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5934378
NONE
08908402
Correspondence name and address
FELSMAN, BRADLEY, ET AL
JAMES E. BRADLEY
3600 ESSEX, STE. 1120
HOUSTON, TX 77027
Assignment: 4
Reel/Frame:008788/0917   Pages: 2
Recorded: 08/19/1997
Conveyance: SEE RECORDING AT REEL 010232, FRAME 0502. RE-RECORD TO CORRECT SERIAL NUMBER THAT WAS ERRONEOUSLY ASSIGNED BY THE PATENT AND TRADEMARK OFFICE.
Assignors
1
TCHAKAROV, BORISLAV J.
Exec Dt:
08/06/1997
2
SEUTTER, DANIEL C.
Exec Dt:
08/14/1997
Assignee
1
COMPUTALOG LIMITED
2140, 53 8TH AVENUE, GW
CALGARY, ALBERTA, CANADA T2P 3
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6002643
NONE
08917624
Correspondence name and address
FELSMAN, BRADLEY, GUNTER ET AL.
JAMES E. BRADLEY
9505 ARBORETUM BLVD., #350
AUSTIN, TX 78759
Assignment: 5
Reel/Frame:009145/0940   Pages: 3
Recorded: 04/23/1998
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
TCHAKAROV, BORISLAV J.
Exec Dt:
04/22/1998
2
DIFOGGIO, ROCCO
Exec Dt:
04/22/1998
3
FORGANG, STANISLAV W.
Exec Dt:
04/22/1998
4
FANINI, OTTO N.
Exec Dt:
04/22/1998
5
HUNZIKER, JAMES C.
Exec Dt:
04/22/1998
6
CIVAROLO, MARCELO F.
Exec Dt:
04/22/1998
Assignee
1
WESTERN ATLAS INTERNATIONAL, INC.
P.O. BOX 1407
10205 WESTHEIMER ROAD
HOUSTON, TEXAS 77042
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6218662
NONE
09065159
Correspondence name and address
RICHARD A. FAGIN
P.O. BOX 1407
10205 WESTHEIMER ROAD
HOUSTON, TX 77042-3115
Assignment: 6
Reel/Frame:014236/0616   Pages: 5
Recorded: 07/07/2003
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
ITSKOVICH, GREGORY
Exec Dt:
06/09/2003
2
BESPALOV, ALEXANDER
Exec Dt:
06/09/2003
3
TCHAKAROV, BORISLAV J.
Exec Dt:
05/28/2003
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX
SUITE 1200
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6903553
US20040046560
10388871
Correspondence name and address
MADAN MOSSMAN & SRIRAM, P.C.
G. MICHAEL ROEBUCK
2603 AUGUSTA
SUITE 700
HOUSTON, TX 77057
Assignment: 7
Reel/Frame:014622/0056   Pages: 5
Recorded: 10/27/2003
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
ITSKOVICH, GREGORY
Exec Dt:
06/09/2003
2
BESPALOV, ALEXANDER
Exec Dt:
06/09/2003
3
TCHAKAROV, BORISLAV J.
Exec Dt:
05/28/2003
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX, SUITE 1200
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6937022
US20040046561
10610943
Correspondence name and address
MADAN, MOSSMAN & SRIRAM, P.C.
G. MICHAEL ROEBUCK
2603 AUGUSTA, SUITE 700
HOUSTON, TEXAS 77057
Assignment: 8
Reel/Frame:014452/0239   Pages: 3
Recorded: 09/04/2003
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
HUNZIKER, JAMES C.
Exec Dt:
08/11/2003
2
TCHAKAROV, BORISLAV J.
Exec Dt:
08/11/2003
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
SUITE 1200
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20050030036
10635250
Correspondence name and address
MADAN MOSSMAN & SRIRAM P.C.
SHAWN HUNTER
2603 AUGUSTA, SUITE 700
HOUSTON, TX 77057
Assignment: 9
Reel/Frame:017350/0061   Pages: 4
Recorded: 03/17/2006
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
TCHAKAROV, BORISLAV J.
Exec Dt:
04/26/2005
2
JUNGHANS, PAUL G.
Exec Dt:
04/26/2005
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7921913
US20070095543
11264547
Correspondence name and address
KEITH R. DERRINGTON
FROST BANK BUILDING
6750 WEST LOOP SOUTH, SUITE 920
BELLAIRE, TEXAS 77401
Assignment: 10
Reel/Frame:018044/0807   Pages: 4
Recorded: 08/01/2006
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
HUNZIKER, JAMES C.
Exec Dt:
07/10/2006
2
TCHAKAROV, BORISLAV J.
Exec Dt:
07/10/2006
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX
SUITE 1200
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7649357
US20060273799
11417418
Correspondence name and address
MADAN MOSSMAN & SRIRAM, P.C.
2603 AUGUSTA, SUITE 700
HOUSTON, TX 77057
Assignment: 11
Reel/Frame:018541/0432   Pages: 3
Recorded: 11/16/2006
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
TCHAKAROV, BORISLAV J.
Exec Dt:
11/15/2006
Assignee
1
BAKER HUGHES INCORPORATED
2929 ALLEN PARKWAY, SUITE 2100
HOUSTON, TEXAS 77019-2118
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7762328
US20080078241
11540032
Correspondence name and address
MADAN, MOSSMAN & SRIRAM, P.C.
2603 AUGUSTA, SUITE 700
HOUSTON, TX 77057
Assignment: 12
Reel/Frame:020267/0846   Pages: 7
Recorded: 12/17/2007
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
TCHAKAROV, BORISLAV J.
Exec Dt:
10/22/2007
2
REITTINGER, PETER W.
Exec Dt:
10/24/2007
3
GALVAN-SANCHEZ, FRANCISCO
Exec Dt:
10/24/2007
Assignee
1
BAKER HUGHES INC.
SUITE 2100
2929 ALLEN PARKWAY
HOUSTON, TEXAS 77019-2118
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7716978
US20090107666
11924940
Correspondence name and address
TODD A. BYNUM
SUITE 130
16815 ROYAL CREST DRIVE
HOUSTON, TX 77058
Assignment: 13
Reel/Frame:024365/0831   Pages: 8
Recorded: 05/11/2010
Attorney Dkt #:005355.700196
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
TCHAKAROV, BORISLAV J.
Exec Dt:
02/05/2008
2
HUNZIKER, JAMES C.
Exec Dt:
02/05/2008
3
AZEEMUDDIN, MOHAMMED
Exec Dt:
01/31/2008
4
PHAN, QUAN V.
Exec Dt:
02/05/2008
5
ONG, SEE H.
Exec Dt:
02/14/2008
Assignee
1
BAKER HUGHES INCORPORATED
2929 ALLEN PARKWAY
SUITE 100
HOUSTON, TEXAS 77019-2118
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8171990
US20100051347
12323187
Correspondence name and address
KEITH R. DERRINGTON
P.O. BOX 61389
HOUSTON, TX 77002-2781
Assignment: 14
Reel/Frame:022550/0483   Pages: 6
Recorded: 04/15/2009
Attorney Dkt #:584-46450-US
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
TCHAKAROV, BORISLAV J.
Exec Dt:
02/11/2009
2
AZEEMUDDIN, MOHAMMED
Exec Dt:
02/10/2009
3
ONG, SEE H.
Exec Dt:
02/10/2009
Assignee
1
BAKER HUGHES INCORPORATED
2929 ALLEN PARKWAY, SUITE 2100
HOUSTON, TEXAS 77019-2118
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8141419
US20090133486
12323128
Correspondence name and address
KEITH R. DERRINGTON
P. O. BOX 61389
HOUSTON, TX 77208-1389
Assignment: 15
Reel/Frame:023491/0337   Pages: 5
Recorded: 11/09/2009
Attorney Dkt #:594-43847-USCP1
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
PHAN, QUAN V.
Exec Dt:
11/03/2009
2
TCHAKAROV, BORISLAV J.
Exec Dt:
11/06/2009
Assignee
1
BAKER HUGHES INCORPORATED
2929 ALLEN PARKWAY
SUITE 2100
HOUSTON, TEXAS 77019-2118
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7673704
US20080078582
11601403
Correspondence name and address
MOSSMAN KUMAR & TYLER PC
11200 WESTHEIMER ROAD
SUITE 900
HOUSTON, TX 77042-3229
Assignment: 16
Reel/Frame:033132/0170   Pages: 5
Recorded: 06/18/2014
Attorney Dkt #:WRT009NP/218528
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
TCHAKAROV, BORISLAV J.
Exec Dt:
06/18/2014
Assignee
1
WELL RESOLUTIONS TECHNOLOGY
19408 PARK ROW
STE. 330
HOUSTON, TEXAS 77048
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
9851465
US20140368350
14308393
Correspondence name and address
ANDREWS KURTH L.L.P.
600 TRAVIS, SUITE 4200
HOUSTON, TX 77002
Assignment: 17
Reel/Frame:033191/0466   Pages: 4
Recorded: 06/26/2014
Attorney Dkt #:217553/WRT004NP
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
WANG, TSILI
Exec Dt:
06/25/2014
2
TCHAKAROV, BORISLAV J.
Exec Dt:
06/25/2014
Assignee
1
WELL RESOLUTIONS TECHNOLOGY
19408 PARK ROW, STE 330
HOUSTON, TEXAS 77048
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
9638819
US20140368200
14307293
Correspondence name and address
ANDREWS KURTH L.L.P.
600 TRAVIS, SUITE 4200
HOUSTON, TX 77002
Assignment: 18
Reel/Frame:048982/0983   Pages: 6
Recorded: 04/24/2019
Attorney Dkt #:0266016
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
WANG, TSILI
Exec Dt:
03/30/2017
2
TCHAKAROV, BORISLAV J.
Exec Dt:
03/30/2017
Assignee
1
WELL RESOLUTIONS TECHNOLOGY
19408 PARK ROW
SUITE 330
HOUSTON, TEXAS 77084
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
10337322
US20180024266
15466220
Correspondence name and address
HUNTON ANDREWS KURTH LLP
600 TRAVIS ST.
SUITE 4200
HOUSTON, TX 77002
Assignment: 19
Reel/Frame:046516/0394   Pages: 4
Recorded: 07/31/2018
Attorney Dkt #:032240.0278517.014NP
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
TCHAKAROV, BORISLAV J.
Exec Dt:
07/30/2018
2
WANG, TSILI
Exec Dt:
07/31/2018
Assignee
1
WELL RESOLUTIONS TECHNOLOGY
19408 PARK ROW
SUITE 330
HOUSTON, TEXAS 77084
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
10072490
US20180258751
15937459
Correspondence name and address
HUNTON ANDREWS KURTH LLP
600 TRAVIS ST.
SUITE 4200
HOUSTON, TX 77002
Assignment: 20
Reel/Frame:063635/0050   Pages: 4
Recorded: 05/12/2023
Attorney Dkt #:111545.0000026
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
TCHAKAROV, BORISLAV J.
Exec Dt:
05/21/2020
2
WANG, TSILI
Exec Dt:
05/21/2020
Assignee
1
WELL RESOLUTIONS TECHNOLOGY
16670 PARK ROW
SUITE 100
HOUSTON, UNITED STATES 77084
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20220341310
17741033
Correspondence name and address
HUNTON AK LLP
200 PARK AVENUE
NEW YORK, NY 10166
Assignment: 21
Reel/Frame:056587/0909   Pages: 4
Recorded: 06/18/2021
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
TCHAKAROV, BORISLAV J.
Exec Dt:
09/28/2020
Assignee
1
WELL RESOLUTIONS TECHNOLOGY
16670 PARK ROW
HOUSTON, TEXAS 77084
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20210079782
17023849
Correspondence name and address
HUNTON ANDREWS KURTH LLP
600 TRAVIS ST.
SUITE 4200
HOUSTON, TX 77002
Assignment: 22
Reel/Frame:055669/0275   Pages: 5
Recorded: 03/22/2021
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
TCHAKAROV, BORISLAV J.
Exec Dt:
03/22/2021
2
WANG, TSILI
Exec Dt:
03/22/2021
Assignee
1
WELL RESOLUTIONS TECHNOLOGY
16670 PARK ROW
SUITE 100
HOUSTON, TEXAS 77084
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
11098572
US20200182037
16790384
Correspondence name and address
HUNTON ANDREWS KURTH LLP
600 TRAVIS ST.
SUITE 4200
HOUSTON, TX 77002
Assignment: 23
Reel/Frame:056339/0323   Pages: 4
Recorded: 05/24/2021
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
TCHAKAROV, BORISLAV J.
Exec Dt:
05/21/2021
2
WANG, TSILI
Exec Dt:
05/21/2021
Assignee
1
WELL RESOLUTIONS TECHNOLOGY
16670 PARK ROW
HOUSTON, TEXAS 77084
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
11326437
US20210032971
17072913
Correspondence name and address
HUNTON ANDREWS KURTH LLP
600 TRAVIS ST.
SUITE 4200
HOUSTON, TX 77002
Assignment: 24
Reel/Frame:063288/0951   Pages: 3
Recorded: 04/11/2023
Attorney Dkt #:111545.0000029
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
TCHAKAROV, BORISLAV J.
Exec Dt:
01/16/2023
Assignee
1
WELL RESOLUTION TECHNOLOGY
16670 PARK ROW
SUITE 100
HOUSTON, TEXAS 77084
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
11725462
NONE
17963643
Correspondence name and address
HUNTON AK LLP
200 PARK AVENUE
NEW YORK, NY 10166

Search Results as of: 05/31/2024 10:17 AM
If you have any comments or questions concerning the data displayed, contact PRD / Assignments at 571-272-3350. v.2.6
Web interface last modified: August 25, 2017 v.2.6
| .HOME | INDEX| SEARCH | eBUSINESS | CONTACT US | PRIVACY STATEMENT