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Patent Assignment Assignor Details
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Assignor Name : BARTEL, ROGER P.
Total Assignments: 12
Assignment: 1
Reel/Frame:004915/0066   Pages: 1
Recorded: 07/18/1988
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignors
1
BARTEL, ROGER P.
Exec Dt:
04/19/1988
2
RODNEY, PAUL F.
Exec Dt:
04/19/1988
Assignee
1
NL INDUSTRIES, INC., 3000 NORTH BELT EAST, HOUSTON, TEXAS 77032 A CORP. OF NEW JERSEY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4940943
NONE
07183695
Correspondence name and address
WILLIAM E. JOHNSON, JR.
BROWNING, BUSHMAN, ZAMECKI & ANDERSON
5718 WESTHEIMER, SUITE 1800
HOUSTON, TX 77057
Assignment: 2
Reel/Frame:005865/0305   Pages: 4
Recorded: 09/30/1991
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignors
1
BARTEL, ROGER P.
Exec Dt:
09/26/1991
2
RAO, M. VIKRAM
Exec Dt:
09/26/1991
3
RODNEY, PAUL F.
Exec Dt:
09/26/1991
Assignee
1
BAROID TECHNOLOGY, INC. A CORP. OF DELAWARE
3000 N. SAM HOUSTON PKWY EAST
HOUSTON, TEXAS 77032
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5278507
NONE
07715401
Correspondence name and address
WILLIAM E. JOHNSON, JR.
BROWNING, BUSHMAN, ANDERSON & BROOKHART
5718 WESTHEIMER, STE. 1800
HOUSTON, TX 77057
Assignment: 3
Reel/Frame:009786/0641   Pages: 4
Recorded: 02/26/1999
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
BARTEL, ROGER P.
Exec Dt:
01/15/1999
Assignee
1
DRESSER INDUSTRIES, INC.
2001 ROSS AVENUE
DALLAS, TEXAS 75201
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6191561
NONE
09231739
Correspondence name and address
COX & SMITH INCORPORATED
COURTENAY B. ALLEN
112 EAST PECAN STREET, SUITE 1800
SAN ANTONIO, TEXAS 78205
Assignment: 4
Reel/Frame:009896/0865   Pages: 5
Recorded: 04/06/1999
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
PRAMMER, MANFRED G.
Exec Dt:
03/08/1999
2
DUDLEY, JAMES H.
Exec Dt:
03/08/1999
3
MAZAK, PETER
Exec Dt:
03/08/1999
4
GOODMAN, GEORGE D.
Exec Dt:
03/08/1999
5
MORYS, MARIAN
Exec Dt:
03/08/1999
6
JONES, DALE A.
Exec Dt:
03/15/1999
7
BARTEL, ROGER P.
Exec Dt:
03/15/1999
8
CHEN, CHEN-KANG DAVID
Exec Dt:
03/15/1999
9
LARRONDE, MICHAEL L.
Exec Dt:
03/15/1999
10
RODNEY, PAUL F.
Exec Dt:
03/15/1999
11
SMAARDYK, JOHN E.
Exec Dt:
03/15/1999
Assignee
1
NUMAR CORPORATION
508 LAPP ROAD
MALVERN, PENNSYLVANIA 19355
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6268726
NONE
09232072
Correspondence name and address
PENNIE & EDMONDS LLP
FRANCIS E. MORRIS
1155 AVENUE OF THE AMERICAS
NEW YORK, NY 10036
Assignment: 5
Reel/Frame:012049/0478   Pages: 5
Recorded: 07/31/2001
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
PRAMMER, MANFRED G.
Exec Dt:
03/08/1999
2
DUDLEY, JAMES H.
Exec Dt:
03/08/1999
3
MASAK, PETER
Exec Dt:
03/08/1999
4
GOODMAN, GEORGE D.
Exec Dt:
03/08/1999
5
MORYS, MARIAN
Exec Dt:
03/08/1999
6
JONES, DALE A.
Exec Dt:
03/15/1999
7
BARTEL, ROGER P.
Exec Dt:
03/15/1999
8
CHEN, CHEN-KANG DAVID
Exec Dt:
03/15/1999
9
LARRONDE, MICHAEL L.
Exec Dt:
03/15/1999
10
RODNEY, PAUL F.
Exec Dt:
03/15/1999
11
SMAARDYK, JOHN E.
Exec Dt:
03/15/1999
Assignee
1
NUMAR CORPORATION
508 LAPP ROAD
MALVERN, PENNSYLVANIA 19355
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6362619
US20010045829
09919129
Correspondence name and address
PENNIE & EDMONDS LLP
FRANCIS E. MORRIS
1155 AVENUE OF THE AMERICAS
NEW YORK, NY 10036
Assignment: 6
Reel/Frame:011350/0786   Pages: 3
Recorded: 12/07/2000
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
BARTEL, ROGER P.
Exec Dt:
11/06/2000
Assignee
1
HALLIBURTON ENERGY SERVICES, INC.
4100 CLINTON DRIVE, BLDG. 1, 6TH FL.
HOUSTON, TEXAS 77020
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6831571
US20010029780
09732286
Correspondence name and address
CONLEY, ROSE & TAYON, P.C.
MARK E. SCOTT
P.O. BOX 3267
HOUSTON, TEXAS 77253-3267
Assignment: 7
Reel/Frame:017855/0756   Pages: 3
Recorded: 06/29/2006
Attorney Dkt #:135-0042US
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
BARTEL, ROGER P.
Exec Dt:
06/29/2006
2
WU, JIAN-QUN
Exec Dt:
06/29/2006
Assignee
1
PRECISION ENERGY SERVICES, LTD.
4200 150-6TH AVENUE, S.W.
CALGARY, CANADA T2P3Y7
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7353613
US20070011895
11427435
Correspondence name and address
J. DAVID CABELLO
20333 SH 249 SUITE 600
HOUSTON, TX 77070
Assignment: 8
Reel/Frame:022153/0493   Pages: 4
Recorded: 01/26/2009
Attorney Dkt #:135-0087US
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
FARLEY, STEVEN REID
Exec Dt:
01/08/2009
2
LARRONDE, MICHAEL LOUIS
Exec Dt:
01/08/2009
3
BARTEL, ROGER P.
Exec Dt:
01/08/2009
4
MAULDIN, CHARLES LEE
Exec Dt:
01/08/2009
5
AIELLO, ROBERT ANTHONY
Exec Dt:
01/08/2009
Assignee
1
PRECISION ENERGY SERVICES, INC.
500 WINSCOTT ROAD
FORT WORTH, TEXAS 76126
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20100163308
12344873
Correspondence name and address
WONG, CABELLO, LUTSCH, RUTHERFORD & BRUC
20333 SH 249
SUITE 600
HOUSTON, TX 77070
Assignment: 9
Reel/Frame:025606/0884   Pages: 4
Recorded: 01/10/2011
Attorney Dkt #:135-0087USD/4708-US-DIV1
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
FARLEY, STEVEN REID
Exec Dt:
01/08/2009
2
LARRONDE, MICHAEL LOUIS
Exec Dt:
01/08/2009
3
BARTEL, ROGER P.
Exec Dt:
01/08/2009
4
MAULDIN, CHARLES LEE
Exec Dt:
01/08/2009
Assignee
1
PRECISION ENERGY SERVICES, INC.
500 WINSCOTT ROAD
FORT WORTH, TEXAS 76126
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20110108327
12986823
Correspondence name and address
WONG, CABELLO, LUTSCH, RUTHERFORD & BRUC
20333 SH 249 6TH FLOOR
HOUSTON, TX 77070
Assignment: 10
Reel/Frame:026905/0458   Pages: 3
Recorded: 09/14/2011
Attorney Dkt #:135-0087USC
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
FARLEY, STEVEN REID
Exec Dt:
01/08/2009
2
LARRONDE, MICHAEL LOUIS
Exec Dt:
01/08/2009
3
BARTEL, ROGER P.
Exec Dt:
01/08/2009
4
MAULDIN, CHARLES LEE
Exec Dt:
01/08/2009
5
AIELLO, ROBERT ANTONY
Exec Dt:
01/08/2009
Assignee
1
PRECISION ENERGY SERVICES, INC.
500 WINSCOTT ROAD
FORT WORTH, TEXAS 76126
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8881844
US20120000709
13232805
Correspondence name and address
(WEATHERFORD) WONG CABELLO LUTSCH RUTHER
20333 TOMBALL PARKWAY, 6TH FLOOR
HOUSTON, TX 77070
Assignment: 11
Reel/Frame:029140/0492   Pages: 3
Recorded: 10/16/2012
Attorney Dkt #:135-0109US
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
BARTEL, ROGER P.
Exec Dt:
10/14/2012
Assignee
1
PRECISION ENERGY SERVICES, INC.
500 WINSCOTT ROAD
FORT WORTH, TEXAS 76126
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
10480304
US20130092439
13651138
Correspondence name and address
(WEATHERFORD) WONG CABELLO LUTSCH RUTHER
20333 TOMBALL PARKWAY, 6TH FLOOR
HOUSTON, TX 77070
Assignment: 12
Reel/Frame:034952/0415   Pages: 3
Recorded: 02/12/2015
Attorney Dkt #:205-0467US
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
BARTEL, ROGER P.
Exec Dt:
02/11/2015
2
MAULDIN, CHARLES LEE
Exec Dt:
02/11/2015
Assignee
1
WEATHERFORD TECHNOLOGY HOLDINGS, LLC
2000 ST. JAMES PLACE
HOUSTON, TEXAS 77056
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
10100630
US20150226050
14621007
Correspondence name and address
(WEATHERFORD) WONG CABELLO LUTSCH RUTHER
20333 TOMBALL PARKWAY, 6TH FLOOR
HOUSTON, TX 77070

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