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 : HOPMANN, DON A.
Total Assignments: 11
Assignment: 1
Reel/Frame:013136/0503   Pages: 7
Recorded: 07/22/2002
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
MAXIT, JORGE O.
Exec Dt:
06/24/2002
2
AHMAD, IZHAR
Exec Dt:
06/24/2002
3
HOPMANN, DON A.
Exec Dt:
06/17/2002
4
COUSIN, DAN
Exec Dt:
06/17/2002
5
GIBSON, TERRY A.
Exec Dt:
07/09/2002
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE, SUITE 1200
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6798350
US20020179303
10126802
Correspondence name and address
MADAN, MOSSMAN & SIRIRAM, P.C.
WILLIAM E. SCHMIDT
2603 AUGUSTA DRIVE
SUITE 700
HOUSTON, TX 77057-5640
Assignment: 2
Reel/Frame:013853/0402   Pages: 9
Recorded: 03/17/2003
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
BUSSEAR, TERRY R.
Exec Dt:
02/25/2003
2
CARMODY, MICHAEL A.
Exec Dt:
01/06/2003
3
JENNINGS, STEVE L.
Exec Dt:
02/28/2003
4
HOPMANN, DON A.
Exec Dt:
02/28/2003
5
ZISK, EDWARD J. JR.
Exec Dt:
01/21/2003
6
NORRIS, MICHAEL
Exec Dt:
01/14/2003
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX, SUITE 1200
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7104331
US20030127232
10289714
Correspondence name and address
MADAN, MOSSMAN & SRIRAM, P.C.
WILLIAM E. SCHMIDT
2603 AUGUSTA, SUITE 700
HOUSTON, TX 77057
Assignment: 3
Reel/Frame:022088/0880   Pages: 9
Recorded: 01/12/2009
Attorney Dkt #:D5407-392
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
HOPMANN, DON A.
Exec Dt:
11/04/2008
2
COUSIN, DANIEL M.
Exec Dt:
11/05/2008
3
YERIAZARIAN, LEVON H
Exec Dt:
11/04/2008
4
FRANCO, JUAN P.
Exec Dt:
12/01/2008
5
AHMED, JASSER J.
Exec Dt:
11/04/2008
6
RANJAN, PRIYESH
Exec Dt:
11/04/2008
Assignee
1
BAKER HUGHES INCORPORATED
2929 ALLEN PARKWAY
HOUSTON, TEXAS 77019-2118
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8237443
US20090128141
12264318
Correspondence name and address
GARY R. MAZE
3200 SOUTHWEST FREEWAY, SUITE 3150
HOUSTON, TX 77027
Assignment: 4
Reel/Frame:021963/0052   Pages: 7
Recorded: 12/11/2008
Attorney Dkt #:274-45846-US(BAO0209US2)
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
RANJAN, PRIYESH
Exec Dt:
11/17/2008
2
HOPMANN, DON A.
Exec Dt:
11/17/2008
3
MENDEZ, LUIS E.
Exec Dt:
11/17/2008
4
STOESZ, CARL W.
Exec Dt:
11/17/2008
Assignee
1
BAKER HUGHES INCORPORATED
2929 ALLEN PARKWAY
SUITE 2100
HOUSTON, TEXAS 77019-2118
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20090151790
12271267
Correspondence name and address
KEITH J. MURPHY, CANTOR COLBURN LLP
20 CHURCH STREET
22ND FLOOR
HARTFORD, CT 06103
Assignment: 5
Reel/Frame:024296/0409   Pages: 7
Recorded: 04/27/2010
Attorney Dkt #:ILC4-49276-US (BAO0379US)
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
HOPMANN, DON A.
Exec Dt:
03/22/2010
2
MENDEZ, LUIS E.
Exec Dt:
03/22/2010
3
DUPHORNE, DARIN
Exec Dt:
03/30/2010
4
WILLAUER, DARRIN
Exec Dt:
03/23/2010
Assignee
1
BAKER HUGHES INCORPORATED
2929 ALLEN PARKWAY
SUITE 2100
HOUSTON, TEXAS 77019-2118
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8602658
US20110194817
12701131
Correspondence name and address
CANTOR COLBURN LLP, KEITH J. MURPHY
20 CHURCH STREET
22ND FLOOR
HARTFORD, CT 06103
Assignment: 6
Reel/Frame:024473/0766   Pages: 5
Recorded: 06/02/2010
Attorney Dkt #:ILC4-49274-US
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
HOPMANN, DON A.
Exec Dt:
04/06/2010
2
MENDEZ, LUIS E.
Exec Dt:
04/06/2010
Assignee
1
BAKER HUGHES INCORPORATED
2929 ALLEN PARKWAY
SUITE 2100
HOUSTON, TEXAS 77019-2118
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8397828
US20110232921
12731826
Correspondence name and address
CANTOR COLBURN LLP
20 CHURCH STREET
22ND FLOOR
HARTFORD, CT 06103
Assignment: 7
Reel/Frame:027123/0732   Pages: 8
Recorded: 10/26/2011
Attorney Dkt #:SSV4-52515-US (BAO0845US)
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
SLOAN, JAMES T.
Exec Dt:
08/17/2011
2
GARR, RONALD J.
Exec Dt:
08/17/2011
3
MCDANIEL, ROBERT
Exec Dt:
08/17/2011
4
HOPMANN, DON A.
Exec Dt:
08/17/2011
5
SCHNEIDER, DAVID E.
Exec Dt:
08/17/2011
Assignee
1
BAKER HUGHES INCORPORATED
2929 ALLEN PARKWAY
SUITE 2100
HOUSTON, TEXAS 77019-2118
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
9133687
US20130043039
13210999
Correspondence name and address
CANTOR COLBURN LLP, KEITH J. MURPHY
20 CHURCH STREET
22ND FLOOR
HARTFORD, CT 06103
Assignment: 8
Reel/Frame:049402/0095   Pages: 4
Recorded: 06/07/2019
Attorney Dkt #:WFT-6559-US
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
CILLI, OTAVIO MAFFUD
Exec Dt:
04/30/2019
2
HOPMANN, DON A.
Exec Dt:
04/30/2019
Assignee
1
WEATHERFORD TECHNOLOGY HOLDINGS, LLC
2000 ST. JAMES PLACE
HOUSTON, TEXAS 77056
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
11125346
US20200347945
16398480
Correspondence name and address
SMITH IP SERVICES, P.C.
P.O. BOX 997
ROCKWALL, TX 75087
Assignment: 9
Reel/Frame:053528/0656   Pages: 4
Recorded: 08/18/2020
Attorney Dkt #:WFT-6599-US
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
HOPMANN, DON A.
Exec Dt:
09/03/2019
2
WOLTERS, SEBASTIAAN
Exec Dt:
09/05/2019
Assignee
1
WEATHERFORD TECHNOLOGY HOLDINGS, LLC
2000 ST. JAMES PLACE
HOUSTON, TEXAS 77056
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
11371318
US20210062614
16996492
Correspondence name and address
SMITH IP SERVICES, P.C.
P.O. BOX 997
ROCKWALL, TX 75087
Assignment: 10
Reel/Frame:059892/0767   Pages: 4
Recorded: 05/11/2022
Attorney Dkt #:WFT-6599-US-C1
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
HOPMANN, DON A.
Exec Dt:
09/03/2019
2
WOLTERS, SEBASTIAAN
Exec Dt:
09/05/2019
Assignee
1
WEATHERFORD TECHNOLOGY HOLDINGS, LLC
2000 ST. JAMES PLACE
HOUSTON, TEXAS 77056
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20220316299
17741839
Correspondence name and address
SMITH IP SERVICES, P.C.
P.O. BOX 997
ROCKWALL, TX 75087
Assignment: 11
Reel/Frame:060289/0968   Pages: 5
Recorded: 06/23/2022
Attorney Dkt #:WFT-6683-US
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
MHASKAR, NAUMAN H.
Exec Dt:
05/17/2022
2
HOPMANN, DON A.
Exec Dt:
03/25/2022
3
WOLTERS, SEBASTIAAN J.
Exec Dt:
03/29/2022
Assignee
1
WEATHERFORD TECHNOLOGY HOLDINGS, LLC
2000 ST. JAMES PLACE
HOUSTON, TEXAS 77056
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
11933415
US20230304594
17704193
Correspondence name and address
SMITH IP SERVICES, P.C.
P.O. BOX 997
ROCKWALL, SC 75087

Search Results as of: 05/26/2024 12:03 PM
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