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Patent Assignment Assignor Details
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Assignor Name : TETZLAFF, STEVEN K.
Total Assignments: 25
Assignment: 1
Reel/Frame:007488/0922   Pages: 4
Recorded: 05/08/1995
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
BARRUS, DONALD J.
Exec Dt:
04/11/1995
2
TETZLAFF, STEVEN K.
Exec Dt:
04/28/1995
Assignee
1
BAKER HUGHES INCORPORATED
P.O. BOX 4740
HOUSTON, TEXAS 77210
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5501580
NONE
08437205
Correspondence name and address
JAMES E. BRADLEY
FELSMAN, BRADLEY, GUNTER & DILLON, LLP
2600 CONTINENTAL PLAZA, SUITE 2600
777 MAIN STREET
FORT WORTH, TX 76102
Assignment: 2
Reel/Frame:008460/0157   Pages: 5
Recorded: 01/29/1997
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
TETZLAFF, STEVEN K.
Exec Dt:
01/24/1997
2
DILLON, DAVID B.
Exec Dt:
01/24/1997
3
SHANAHAN, STEPHEN T.
Exec Dt:
01/24/1997
Assignee
1
BAKER HUGHES INCORPORATED
P.O. BOX 4740
HOUSTON, TEXAS 77210
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5842521
NONE
08790945
Correspondence name and address
FELSMAN, BRADLEY, GUNTER & DILLON, LLP
JAMES E. BRADLEY
3600 ESSEX, SUITE 1120
HOUSTON, TX 77027
Assignment: 3
Reel/Frame:008708/0867   Pages: 3
Recorded: 09/11/1997
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
TETZLAFF, STEVEN K.
Exec Dt:
09/05/1997
Assignee
1
BAKER HUGHES INCORPORATED
#1200
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5954483
NONE
08927253
Correspondence name and address
FELSMAN, BRADLEY, GUNTER & DILLON, LLP
JAMES E. BRADLEY
3600 ESSEX
SUITE 1120
HOUSTON, TX 77027
Assignment: 4
Reel/Frame:009130/0690   Pages: 5
Recorded: 03/26/1998
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
TETZLAFF, STEVEN K.
Exec Dt:
03/11/1998
2
DILLON, DAVID B.
Exec Dt:
03/13/1998
3
KANADY, EDWARD C.
Exec Dt:
03/23/1998
4
OLSON, DAVID L.
Exec Dt:
03/11/1998
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX DRIVE, #1200
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5988992
NONE
09048419
Correspondence name and address
FELSMAN, BRADLEY, GUNTER & DILLON, LLP
JAMES E. BRADLEY
3600 ESSEX, SUITE 1120
HOUSTON, TEXAS 77027
Assignment: 5
Reel/Frame:010654/0790   Pages: 6
Recorded: 03/06/2000
Conveyance: (CORRECTIVE ASSIGNMENT) TO CORRECT THE INVENTOR'S NAME, PREVIOUSLY RECORDED ON 09-27-99 AT REEL 010278 FRAME 0175.
Assignor
1
TETZLAFF, STEVEN K.
Exec Dt:
09/24/1999
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE, #1200
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6328111
NONE
09406316
Correspondence name and address
FELSMAN BRADLEY VADEN GUNTER & DILLON
JAMES E. BRADLEY
ONE RIVERWAY, SUITE 1100
HOUSTON, TEXAS 77056
Assignment: 6
Reel/Frame:010721/0484   Pages: 4
Recorded: 03/24/2000
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
DILLON, DAVID B.
Exec Dt:
03/24/2000
2
OLSON, DAVID L.
Exec Dt:
03/21/2000
3
TETZLAFF, STEVEN K.
Exec Dt:
03/24/2000
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE, #1200
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6289990
NONE
09534686
Correspondence name and address
FELSMAN, BRADLEY, VADEN, ET AL
JAMES E. BRADLEY
ONE RIVERWAY, SUITE 1100
HOUSTON, TX 77056
Assignment: 7
Reel/Frame:012719/0085   Pages: 5
Recorded: 12/18/2001
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
OLSON, DAVID L.
Exec Dt:
12/06/2001
2
TETZLAFF, STEVEN K.
Exec Dt:
12/06/2001
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE, #1200
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6702027
US20030111230
10023676
Correspondence name and address
BRACEWELL & PATTERSON, L.L.P.
JAMES E. BRADLEY
711 LOUISIANA, SUITE 2900
HOUSTON, TEXAS 77002
Assignment: 8
Reel/Frame:016922/0186   Pages: 8
Recorded: 08/25/2005
Attorney Dkt #:104-395757
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
TETZLAFF, STEVEN K.
Exec Dt:
08/23/2005
2
PARMETER, LARRY J.
Exec Dt:
08/23/2005
3
DOTY, ED L.
Exec Dt:
08/23/2005
4
COYLE, ROB A.
Exec Dt:
08/23/2005
5
WALLACE, THOMSON H.
Exec Dt:
07/18/2005
6
DALRYMPLE, LARRY V.
Exec Dt:
07/18/2005
7
NEUROTH, DAVID H.
Exec Dt:
08/02/2005
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE, #1200
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7611339
US20070046115
11211896
Correspondence name and address
JAMES E. BRADLEY
BRACEWELL & GIULIANI LLP
P.O. BOX 61389
HOUSTON, TEXAS 77208-1389
Assignment: 9
Reel/Frame:019845/0110   Pages: 4
Recorded: 09/17/2007
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
PARMETER, LARRY J.
Exec Dt:
09/11/2007
2
LEAMY, BRETT D.
Exec Dt:
09/11/2007
3
TETZLAFF, STEVEN K.
Exec Dt:
09/11/2007
4
YINGST, BRAD E.
Exec Dt:
09/11/2007
Assignee
1
BAKER HUGHES INC.
2929 ALLEN PARKWAY, SUITE 2100
HOUSTON, TEXAS 77019
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7575458
US20080064269
11853965
Correspondence name and address
JAMES E. BRADLEY
BRACEWELL & GIULIANI LLP
P.O. BOX 61389
HOUSTON, TX 77208-1389
Assignment: 10
Reel/Frame:021552/0150   Pages: 3
Recorded: 09/18/2008
Attorney Dkt #:104-47151
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
TETZLAFF, STEVEN K.
Exec Dt:
09/18/2008
2
ROBINSON, LANCE T.
Exec Dt:
09/18/2008
Assignee
1
BAKER HUGHES INCORPORATED
2929 ALLEN PARKWAY, SUITE 2100
HOUSTON, TEXAS 77019
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7921908
US20100065280
12233309
Correspondence name and address
BRACEWELL & GIULIANI LLP
P.O. BOX 61389
HOUSTON, TX 77208-1389
Assignment: 11
Reel/Frame:022466/0178   Pages: 5
Recorded: 03/30/2009
Attorney Dkt #:104-47869-US
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
TETZLAFF, STEVEN K.
Exec Dt:
03/27/2009
2
BIERIG, KEVIN R.
Exec Dt:
03/27/2009
3
THOMPSON, JOSEPH SCOTT
Exec Dt:
03/27/2009
Assignee
1
BAKER HUGHES INCORPORATED
2929 ALLEN PARKWAY, SUITE 2100
HOUSTON, TEXAS 77019
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20100243263
12413243
Correspondence name and address
KEITH R. DERRINGTON
P. O. BOX 61389
HOUSTON, TX 77208-1389
Assignment: 12
Reel/Frame:022769/0743   Pages: 5
Recorded: 06/02/2009
Attorney Dkt #:104-48047-US
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
BROWN, DONN J.
Exec Dt:
05/29/2009
2
WILSON, BROWN LYLE
Exec Dt:
05/29/2009
3
TETZLAFF, STEVEN K.
Exec Dt:
05/29/2009
4
MACK, JOHN J.
Exec Dt:
05/29/2009
Assignee
1
BAKER HUGHES INCORPORATED
2929 ALLEN PARKWAY, SUITE 2100
HOUSTON, TEXAS 77019
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8079418
US20100300695
12476831
Correspondence name and address
JAMES E. BRADLEY (9010RF.045531)
BRACEWELL & GIULIANI LLP, P.O. BOX 61389
HOUSTON, TX 77208-1389
Assignment: 13
Reel/Frame:023417/0958   Pages: 6
Recorded: 10/23/2009
Attorney Dkt #:104-17917-US
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
TETZLAFF, STEVEN K.
Exec Dt:
10/22/2009
2
SHETH, KETANKUMAR K.
Exec Dt:
10/22/2009
3
KNAPP, JOHN M.
Exec Dt:
10/22/2009
4
BROOKBANK, EARL B.
Exec Dt:
10/22/2009
5
PRANGER, WILLIAM F.
Exec Dt:
10/21/2009
6
TRAN, THIEN Q.
Exec Dt:
10/22/2009
7
O'BRYAN, SURESHA R.
Exec Dt:
10/21/2009
Assignee
1
BAKER HUGHES INCORPORATED
2929 ALLEN PARKWAY
SUITE 2100
HOUSTON, TEXAS 77019
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8358043
US20100102648
12605221
Correspondence name and address
BRACEWELL & GIULIANI LLP
P.O. BOX 61389
HOUSTON, TX 77208-1389
Assignment: 14
Reel/Frame:023835/0618   Pages: 6
Recorded: 01/22/2010
Attorney Dkt #:SYS4-47869-US-CP1
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
TETZLAFF, STEVEN K.
Exec Dt:
01/22/2010
2
BIERIG, KEVIN R.
Exec Dt:
01/22/2010
3
THOMPSON, JOSEPH SCOTT
Exec Dt:
01/22/2010
Assignee
1
BAKER HUGHES INCORPORATED
2929 ALLEN PARKWAY, SUITE 2100
HOUSTON, TEXAS 77019
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8397822
US20100243264
12692342
Correspondence name and address
BRACEWELL & GIULIANI LLP
P.O. BOX 61389
HOUSTON, TX 77208-1389
Assignment: 15
Reel/Frame:024803/0943   Pages: 5
Recorded: 08/06/2010
Attorney Dkt #:ESP4-47549
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
SHETH, KETANKUMAR K.
Exec Dt:
08/05/2010
2
TETZLAFF, STEVEN K.
Exec Dt:
08/05/2010
Assignee
1
BAKER HUGHES INCORPORATED
2929 ALLEN PARKWAY
SUITE 2100
HOUSTON, TEXAS 77019
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8439119
US20110042101
12852343
Correspondence name and address
BRACEWELL & GIULIANI LLP
P.O. BOX 61389
HOUSTON, TX 77208-1389
Assignment: 16
Reel/Frame:026129/0711   Pages: 5
Recorded: 04/14/2011
Attorney Dkt #:SYS4-51554-US
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
TETZLAFF, STEVEN K.
Exec Dt:
04/13/2011
2
CRAIG, CHAD A.
Exec Dt:
04/13/2011
Assignee
1
BAKER HUGHES INCORPORATED
2929 ALLEN PARKWAY
SUITE 2100
HOUSTON, TEXAS 77019-2118
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8845308
US20120263610
13086503
Correspondence name and address
JAMES E. BRADLEY
BRACEWELL & GIULIANI LLP
P. O. BOX 61389
HOUSTON, TX 77208-1389
Assignment: 17
Reel/Frame:026218/0759   Pages: 3
Recorded: 05/03/2011
Attorney Dkt #:9010RF.045565-SYS4-50593
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
TETZLAFF, STEVEN K.
Exec Dt:
05/03/2011
Assignee
1
BAKER HUGHES INCORPORATED
2929 ALLEN PARKWAY
SUITE 2100
HOUSTON, TEXAS 77019-2118
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8651837
US20110274565
13099946
Correspondence name and address
BRACEWELL & GIULIANI LLP
P.O. BOX 61389
HOUSTON, TX 77208-1389
Assignment: 18
Reel/Frame:026457/0815   Pages: 8
Recorded: 06/17/2011
Attorney Dkt #:MOT4-51335-US (045591)
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
MARTINEZ, IGNACIO
Exec Dt:
06/10/2011
2
BROWN, DONN J.
Exec Dt:
06/10/2011
3
MACK, JOHN J.
Exec Dt:
06/09/2011
4
TETZLAFF, STEVEN K.
Exec Dt:
06/09/2011
5
MERRILL, DAN A.
Exec Dt:
06/09/2011
Assignee
1
BAKER HUGHES INCORPORATED
2929 ALLEN PARKWAY
SUITE 2100
HOUSTON, TEXAS 77019-2118
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8708675
US20110247788
13163395
Correspondence name and address
JAMES E. BRADLEY
BRACEWELL & GIULIANI LLP
P.O. BOX 61389
HOUSTON, TX 77208-1389
Assignment: 19
Reel/Frame:026485/0816   Pages: 6
Recorded: 06/22/2011
Attorney Dkt #:BAKR01301
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
TETZLAFF, STEVEN K.
Exec Dt:
06/13/2011
2
BEBAK, KEN
Exec Dt:
06/15/2011
3
MCCOY, ROBERT H.
Exec Dt:
06/21/2011
4
ROBINSON, LANCE T.
Exec Dt:
06/13/2011
Assignee
1
BAKER HUGHES INCORPORATED
2929 ALLEN PARKWAY
SUITE 2100
HOUSTON, TEXAS 77019
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8821137
US20110311375
13166511
Correspondence name and address
MARK L. BERRIER
3811 BEE CAVES RD.
SUITE 204
AUSTIN, TX 78746
Assignment: 20
Reel/Frame:026840/0643   Pages: 8
Recorded: 08/31/2011
Attorney Dkt #:CBL4-50785-US
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
FREY, JEFFREY G.
Exec Dt:
08/30/2011
2
LINGENFELTER, DONALD RAY
Exec Dt:
08/30/2011
3
GLASSCOCK, TERRY L.
Exec Dt:
08/30/2011
4
TETZLAFF, STEVEN K.
Exec Dt:
08/30/2011
5
CRAIG, CHAD A.
Exec Dt:
08/30/2011
Assignee
1
BAKER HUGHES INCORPORATED
2929 ALLEN PARKWAY
SUITE 2100
HOUSTON, TEXAS 77019
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8382508
US20130052055
13222978
Correspondence name and address
BRACEWELL & GIULIANI LLP
P.O. BOX 61389
HOUSTON, TX 77208-1389
Assignment: 21
Reel/Frame:027182/0283   Pages: 6
Recorded: 11/07/2011
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
TETZLAFF, STEVEN K.
Exec Dt:
10/19/2011
2
BEARDEN, JOHN
Exec Dt:
10/19/2011
3
BEBAK, KEN
Exec Dt:
10/19/2011
4
MILNE, WILLIAM H.
Exec Dt:
10/19/2011
Assignee
1
BAKER HUGHES INCORPORATED
2929 ALLEN PARKWAY, SUITE 2100
HOUSTON, TEXAS 77019-2118
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8985972
US20120118563
13290170
Correspondence name and address
BRACEWELL & GIULIANI LLP
P.O. BOX 61389
HOUSTON, TX 77208-1389
Assignment: 22
Reel/Frame:027238/0756   Pages: 4
Recorded: 11/16/2011
Attorney Dkt #:SYS4-51517-9010RF045579
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
TETZLAFF, STEVEN K.
Exec Dt:
11/04/2011
2
ROBINSON, LANCE
Exec Dt:
11/04/2011
Assignee
1
BAKER HUGHES INCORPORATED
2929 ALLEN PARKWAY
SUITE 2100
HOUSTON, TEXAS 77019-2118
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
9080436
US20120152563
13297979
Correspondence name and address
BRACEWELL & GIULIANI LLP
P.O. BOX 61389
HOUSTON, TX 77208-1389
Assignment: 23
Reel/Frame:027550/0527   Pages: 4
Recorded: 01/18/2012
Attorney Dkt #:9010RF.045613
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
BEBAK, KENNETH T.
Exec Dt:
01/13/2012
2
TETZLAFF, STEVEN K.
Exec Dt:
01/13/2012
Assignee
1
BAKER HUGHES INCORPORATED
2929 ALLEN PARKWAY, SUITE 2100
HOUSTON, TEXAS 77019-2118
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8844636
US20130180730
13352580
Correspondence name and address
BRACEWELL & GIULIANI LLP
P.O. BOX 61389
HOUSTON, TX 77208-1389
Assignment: 24
Reel/Frame:030885/0688   Pages: 7
Recorded: 07/26/2013
Attorney Dkt #:SYS4-55517_US
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
TETZLAFF, STEVEN K.
Exec Dt:
07/26/2013
2
ADAMS, DAN L.
Exec Dt:
07/26/2013
3
MAY, DEWAYNE
Exec Dt:
07/26/2013
4
DINKINS, WALTER R.
Exec Dt:
07/26/2013
5
PYRON, STEVEN W.
Exec Dt:
07/26/2013
Assignee
1
BAKER HUGHES INCORPORATED
2929 ALLEN PARKWAY, SUITE 2100
HOUSTON, TEXAS 77019-2118
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20150027728
13952100
Correspondence name and address
STEVE ROSENBLATT
P.O. BOX 421239
HOUSTON, TX 77242
Assignment: 25
Reel/Frame:031047/0485   Pages: 9
Recorded: 08/20/2013
Attorney Dkt #:SLS4-55121-US
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
WILSON, BROWN LYLE
Exec Dt:
08/06/2013
2
BROOKBANK, EARL B.
Exec Dt:
08/06/2013
3
SHETH, KETANKUMAR K.
Exec Dt:
08/06/2013
4
TETZLAFF, STEVEN K.
Exec Dt:
08/06/2013
5
RUTTER, RISA
Exec Dt:
08/06/2013
6
O'BRYAN, SURESHA R.
Exec Dt:
08/20/2013
Assignee
1
BAKER HUGHES INCORPORATED
2929 ALLEN PARKWAY
SUITE 2100
HOUSTON, TEXAS 77019
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8830471
US20140168638
13971293
Correspondence name and address
SHAWN HUNTER / BAKER HUGHES FILINGS
P.O. BOX 270110
HOUSTON, TX 77277-0110

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