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 : SIERRA, LEOPOLDO
Total Assignments: 12
Assignment: 1
Reel/Frame:016631/0420   Pages: 5
Recorded: 05/31/2005
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
SIERRA, LEOPOLDO
Exec Dt:
04/12/2005
2
BLAUCH, MATTHEW E.
Exec Dt:
04/05/2005
3
DALRYMPLE, ELDON D.
Exec Dt:
04/04/2005
4
PARKER, MARK A.
Exec Dt:
04/01/2005
5
EOFF, LARRY S.
Exec Dt:
04/01/2005
6
REDDY, BAIRIREDDY R.
Exec Dt:
04/01/2005
Assignee
1
HALLIBURTON ENERGY SERVICES, INC.
10200 BELLAIRE BLVD.
HOUSTON, TEXAS 77072
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8631869
US20050199396
11102062
Correspondence name and address
ROBERT A. KENT
HALLIBURTON ENERGY SERVICES
2600 S. 2ND STREET
DUNCAN, OK 73536-0440
Assignment: 2
Reel/Frame:016920/0809   Pages: 3
Recorded: 08/26/2005
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
SIERRA, LEOPOLDO
Exec Dt:
08/15/2005
Assignee
1
HALLIBURTON ENERGY SERVICES, INC.
10200 BELLAIRE BLVD.
HOUSTON, TEXAS 77072
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7493957
US20070012445
11183028
Correspondence name and address
ROBERT A. KENT
HALLIBURTON ENERGY SERVICES
2600 S. 2ND STREET
DUNCAN, OK 73536-0440
Assignment: 3
Reel/Frame:018409/0413   Pages: 4
Recorded: 10/10/2006
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
SIERRA, LEOPOLDO
Exec Dt:
09/25/2006
2
EOFF, LARRY S.
Exec Dt:
08/04/2006
Assignee
1
HALLIBURTON ENERGY SERVICES, INC.
10200 BELLAIRE BLVD.
HOUSTON, TEXAS 77072
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8181703
US20060283592
11485199
Correspondence name and address
ROBERT A. KENT
HALLIBURTON ENERGY SERVICES, INC.
2600 S. 2ND STREET
DUNCAN, OK 73536-0440
Assignment: 4
Reel/Frame:023155/0224   Pages: 9
Recorded: 08/20/2009
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
SIERRA, LEOPOLDO
Exec Dt:
07/31/2009
2
EAST, JR., LOYD E.
Exec Dt:
07/23/2009
3
SOLIMAN, MOHAMED Y.
Exec Dt:
07/23/2009
Assignee
1
HALLIBURTON ENERGY SERVICES, INC.
10200 BELLAIRE BLVD.
HOUSTON, TEXAS 77072
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8104535
US20110042083
12583441
Correspondence name and address
ROBERT A. KENT
HALLIBURTON ENERGY SERVICES, INC.
2600 S. 2ND STREET
DUNCAN, OK 73536-0440
Assignment: 5
Reel/Frame:028215/0179   Pages: 5
Recorded: 05/16/2012
Attorney Dkt #:086108-0641
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
SIERRA, LEOPOLDO
Exec Dt:
07/31/2009
2
EAST, JR., LOYD E.
Exec Dt:
07/23/2009
3
SOLIMAN, MOHAMED Y.
Exec Dt:
07/23/2009
Assignee
1
HALLIBURTON ENERGY SERVICES, INC.
10200 BELLAIRE BOULEVARD
HOUSTON, TEXAS 77072
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8307893
US20120160484
13337072
Correspondence name and address
ROBERT A. KENT
HALLIBURTON ENERGY SERVICES, INC.
2600 S. 2ND STREET
DUNCAN, OK 73536-0440
Assignment: 6
Reel/Frame:024025/0380   Pages: 3
Recorded: 03/03/2010
Attorney Dkt #:2009-IP-023152U1
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
SIERRA, LEOPOLDO
Exec Dt:
02/27/2010
2
BAKHITRAYOV, ALBERT
Exec Dt:
02/27/2010
Assignee
1
HALLIBURTON ENERGY SERVICES, INC.
10200 BELLAIRE BLVD.
HOUSTON, TEXAS 77072
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20110214857
12717020
Correspondence name and address
HALLIBURTON ENERGY SERVICES, INC.
2600 S. 2ND STREET
ATTN. ROBERT A. KENT
DUNCAN, OK 73536
Assignment: 7
Reel/Frame:032673/0229   Pages: 3
Recorded: 04/15/2014
Attorney Dkt #:2009-IP-023152U1D1
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
SIERRA, LEOPOLDO
Exec Dt:
02/27/2010
2
BAKHITRAYOV, ALBERT
Exec Dt:
02/27/2010
Assignee
1
HALLIBURTON ENERGY SERVICES, INC.
10200 BELLAIRE BOULEVARD
HOUSTON, TEXAS 77072
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20140224489
14252872
Correspondence name and address
BOOTH ALBANESI SCHROEDER
1601 ELM STREET, SUITE 1950
DALLAS, TX 75201
Assignment: 8
Reel/Frame:029439/0001   Pages: 11
Recorded: 12/10/2012
Attorney Dkt #:086108-0957
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
NGUYEN, PHILIP D.
Exec Dt:
11/27/2012
2
WEAVER, JIMMIE D.
Exec Dt:
11/27/2012
3
SANDERS, MICHAEL W.
Exec Dt:
11/27/2012
4
BRYANT, JASON E.
Exec Dt:
11/30/2012
5
EAST, LOYD E.
Exec Dt:
12/03/2012
6
IZQUIERDO, GUILLERMO ANTONIO
Exec Dt:
12/04/2012
7
SIERRA, LEOPOLDO
Exec Dt:
11/28/2012
8
HUNTER, TIMOTHY H.
Exec Dt:
11/27/2012
Assignee
1
HALLIBURTON ENERGY SERVICES, INC.
10200 BELLAIRE BOULEVARD
HOUSTON, TEXAS 77072
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20140144633
13687186
Correspondence name and address
ROBERT A. KENT
HALLIBURTON ENERGY SERVICES, INC.
2600 S. 2ND STREET
DUNCAN, OK 73536
Assignment: 9
Reel/Frame:029439/0253   Pages: 11
Recorded: 12/10/2012
Attorney Dkt #:086108-0958
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
NGUYEN, PHILIP D.
Exec Dt:
11/27/2012
2
WEAVER, JIMMIE D.
Exec Dt:
11/27/2012
3
SANDERS, MICHAEL W.
Exec Dt:
11/27/2012
4
BRYANT, JASON E.
Exec Dt:
11/30/2012
5
EAST, LOYD E.
Exec Dt:
12/03/2012
6
IZQUIERDO, GUILLERMO ANTONIO
Exec Dt:
12/04/2012
7
SIERRA, LEOPOLDO
Exec Dt:
11/28/2012
8
HUNTER, TIMOTHY H.
Exec Dt:
11/27/2012
Assignee
1
HALLIBURTON ENERGY SERVICES, INC.
10200 BELLAIRE BOULEVARD
HOUSTON, TEXAS 77072
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20140144634
13687265
Correspondence name and address
ROBERT A. KENT
HALLIBURTON ENERGY SERVICES, INC.
2600 S. 2ND STREET
DUNCAN, OK 73536
Assignment: 10
Reel/Frame:029439/0406   Pages: 11
Recorded: 12/10/2012
Attorney Dkt #:091721-0109
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
NGUYEN, PHILIP D.
Exec Dt:
11/27/2012
2
WEAVER, JIMMIE D.
Exec Dt:
11/27/2012
3
SANDERS, MICHAEL W.
Exec Dt:
11/27/2012
4
BRYANT, JASON E.
Exec Dt:
11/30/2012
5
EAST, LOYD E.
Exec Dt:
12/03/2012
6
IZQUIERDO, GUILLERMO ANTONIO
Exec Dt:
12/04/2012
7
SIERRA, LEOPOLDO
Exec Dt:
11/28/2012
8
HUNTER, TIMOTHY H.
Exec Dt:
11/27/2012
Assignee
1
HALLIBURTON ENERGY SERVICES, INC.
10200 BELLAIRE BOULEVARD
HOUSTON, TEXAS 77072
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20140144635
13687308
Correspondence name and address
ROBERT A. KENT
HALLIBURTON ENERGY SERVICES, INC.
2600 S. 2ND STREET
DUNCAN, OK 73536
Assignment: 11
Reel/Frame:049457/0384   Pages: 6
Recorded: 06/13/2019
Attorney Dkt #:2019IPM103012U1US 01000
Conveyance: CORRECTIVE ASSIGNMENT TO CORRECT THE NAME OF THE FIRST ASSIGNOR ON THE COVER SHEET PREVIOUSLY RECORDED AT REEL: 049431 FRAME: 0186. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT.
Assignors
1
SIERRA, LEOPOLDO
Exec Dt:
05/25/2019
2
EOFF, LARRY STEVEN
Exec Dt:
05/29/2019
Assignee
1
HALLIBURTON ENERGY SERVICES, INC.
3000 N. SAM HOUSTON PARKWAY E.
HOUSTON, TEXAS 77032-3219
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
10808515
NONE
16436536
Correspondence name and address
CONLEY ROSE P.C.
5601 GRANITE PARKWAY
SUITE 500
PLANO, TX 75024
Assignment: 12
Reel/Frame:050885/0288   Pages: 5
Recorded: 10/31/2019
Attorney Dkt #:2069464-0768PTUS
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
NGUYEN, PHILIP D.
Exec Dt:
10/24/2019
2
MONTALVO, JANETTE CORTEZ
Exec Dt:
10/24/2019
3
SIERRA, LEOPOLDO
Exec Dt:
10/29/2019
Assignee
1
HALLIBURTON ENERGY SERVICES, INC.
3000 N. SAM HOUSTON PARKWAY E.
HOUSTON, TEXAS 77032
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
10920558
US20210010360
16510663
Correspondence name and address
ROBERT HILTON
1750 TYSONS BOULEVARD, SUITE 1800
TYSONS, VA 22102

Search Results as of: 05/27/2024 01:05 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