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Patent Assignment Assignor Details
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Assignor Name : LOGAN, DEREK W.
Total Assignments: 18
Assignment: 1
Reel/Frame:009740/0933   Pages: 4
Recorded: 02/01/1999
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
LOGAN, DEREK W.
Exec Dt:
04/06/1998
2
DOPF, ANTHONY ROBERT
Exec Dt:
04/06/1998
3
CAMWELL, PAUL L.
Exec Dt:
04/06/1998
Assignee
1
RYAN ENERGY TECHNOLOGIES, INC.
4215 - 54TH AVENUE SE
CALGARY, ALBERTA T2C 2
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6050353
NONE
09044423
Correspondence name and address
LEE, MANN, SMITH, MCWILLIAMS, ET AL.
WILLIAM M. LEE, JR.
P.O. BOX 2786
CHICAGO, IL 60690-2786
Assignment: 2
Reel/Frame:009869/0107   Pages: 4
Recorded: 04/05/1999
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
LOGAN, DEREK W.
Exec Dt:
02/09/1999
2
DOPF, ANTHONY ROBERT
Exec Dt:
01/26/1999
3
CAMWELL, PAUL L.
Exec Dt:
01/26/1999
Assignee
1
RYAN ENERGY TECHNOLOGIES, INC.
4215 - 54TH AVENUE SE
CALGARY, ALBERTA, CANADA T2C 2
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6158532
NONE
09240140
Correspondence name and address
LEE, MANN, SMITH, ET AL.
WILLIAM M. LEE, JR.
P.O. BOX 2786
CHICAGO, IL 60690-2786
Assignment: 3
Reel/Frame:011316/0159   Pages: 6
Recorded: 11/20/2000
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
CAMWELL, PAUL L.
Exec Dt:
08/18/2000
2
SUTHERLAND, MICHAEL T.
Exec Dt:
08/17/2000
3
DOPF, ANTHONY ROBERT
Exec Dt:
08/17/2000
4
LOGAN, DEREK W.
Exec Dt:
08/24/2000
5
LISCOMBE, RANDALL S.
Exec Dt:
08/18/2000
Assignee
1
RYAN ENERGY TECHNOLOGIES INC.
4215 54TH STREET SE
CALGARY, ALBERTA, CANADA T2C 2
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6367323
NONE
09641092
Correspondence name and address
LEE, MANN, SMITH, ET AL
ATTN; WILLIAM M. LEE, JR.
P.O. BOX 2786
CHICAGO, IL 60690-2786
Assignment: 4
Reel/Frame:014474/0718   Pages: 8
Recorded: 09/05/2003
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
CAMWELL, PAUL L.
Exec Dt:
06/12/2003
2
SIEMENS, WENDALL L.
Exec Dt:
06/12/2003
3
LOGAN, DEREK W.
Exec Dt:
06/12/2003
4
LIU, JILI
Exec Dt:
06/12/2003
Assignee
1
EXTREME ENGINEERING LTD.
BAY 8, 6025 12TH STREET, S.E.
CALGARY, AB T2H 2K1, CANADA
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7462957
US20050052796
10655028
Correspondence name and address
D. DOAK HORNE
SUITE 1400, 700 - 2ND STREET S.W.
CALGARY, AB T2P 4V5 CANADA
Assignment: 5
Reel/Frame:014551/0688   Pages: 6
Recorded: 09/29/2003
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
DOPF, ANTHONY R.
Exec Dt:
09/12/2003
2
LOGAN, DEREK W.
Exec Dt:
09/15/2003
3
SWITZER, DAVID
Exec Dt:
09/12/2003
Assignee
1
EXTREME ENGINEERING LTD.
BAY 8, 6025 - 12TH STREET S.E.
CALGARY, AB, CANADA T2H 2K1
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6902414
US20050070141
10671835
Correspondence name and address
D. DOAK HORNE
SUITE 1400
700-2ND STREET SW
CALGARY, AB, CANADA T2P 4V5
Assignment: 6
Reel/Frame:017842/0518   Pages: 8
Recorded: 06/26/2006
Attorney Dkt #:A8105767US
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
DOPF, ANTHONY R.
Exec Dt:
05/17/2006
2
LOGAN, DEREK W.
Exec Dt:
05/17/2006
3
NEFF, TIMOTHY
Exec Dt:
05/17/2006
4
CAMWELL, PAUL L.
Exec Dt:
05/17/2006
Assignee
1
EXTREME ENGINEERING LTD.
5925 - 12TH STREET S.E.
BAY 14
CALGARY, CANADA T2H 2M3
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7821178
US20060261701
11431636
Correspondence name and address
MICHELE GAMBLE
700 - 2ND STREET S.W.
SUITE 1400
CALGARY, T2P 4V5 CANADA
Assignment: 7
Reel/Frame:026206/0612   Pages: 8
Recorded: 05/02/2011
Attorney Dkt #:SBERG2CIP
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
CAMWELL, PAUL L.
Exec Dt:
05/17/2006
2
DOPF, ANTHONY R.
Exec Dt:
05/17/2006
3
LOGAN, DEREK W.
Exec Dt:
05/17/2006
4
NEFF, TIMOTHY
Exec Dt:
05/17/2006
Assignee
1
EXTREME ENGINEERING LTD.
BAY 14, 5925-12TH STREET, S.E.
CALGARY, ALBERTA, CANADA T2H 2M3
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8624464
US20110227447
12886786
Correspondence name and address
RYAN A. SCHNEIDER
600 PEACHTREE STREET, NE, SUITE 5200
BANK OF AMERICA PLAZA
ATLANTA, GA 30308-2216
Assignment: 8
Reel/Frame:019585/0577   Pages: 5
Recorded: 07/20/2007
Attorney Dkt #:3435-78417-01
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
CAMWELL, PAUL L.
Exec Dt:
05/17/2007
2
SIEMENS, WENDALL L.
Exec Dt:
05/17/2007
3
LOGAN, DEREK W.
Exec Dt:
05/17/2007
Assignee
1
XACT DOWNHOLE TELEMETRY INC.
BAY 14, 5925 - 12TH STREET S.E.
CALGARY, ALBERTA, CANADA T2H 2M3
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20070257809
11786521
Correspondence name and address
JEFFREY B. HAENDLER
121 SW SALMON STREET
ONE WORLD TRADE CENTER, SUITE 1600
PORTLAND, OR 97204
Assignment: 9
Reel/Frame:021189/0286   Pages: 5
Recorded: 06/27/2008
Attorney Dkt #:3435-81039-01
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
CAMWELL, PAUL L.
Exec Dt:
05/23/2007
2
NEFF, JAMES M.
Exec Dt:
05/23/2007
3
LOGAN, DEREK W.
Exec Dt:
05/23/2007
Assignee
1
EXTREME ENGINEERING LTD.
BAY 14, 5925 - 12TH STREET S.E.
CALGARY, ALBERTA, CANADA T2H 2M3
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8115651
US20080253228
12082530
Correspondence name and address
JEFFREY B. HAENDLER
121 SW SALMON STREET
ONE WORLD TRADE CENTER, SUITE 1600
PORTLAND, OR 97204
Assignment: 10
Reel/Frame:020314/0026   Pages: 7
Recorded: 01/03/2008
Attorney Dkt #:EXTREME1
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
DOPF, ANTHONY R.
Exec Dt:
09/25/2007
2
LOGAN, DEREK W.
Exec Dt:
09/25/2007
3
CAMWELL, PAUL L.
Exec Dt:
09/25/2007
4
WHALEN, DAVID D.
Exec Dt:
09/25/2007
5
VERMEEREN, THOMAS H.
Exec Dt:
11/06/2007
Assignee
1
EXTREME ENGINEERING LTD.
BAY 14, 5925 - 12TH STREET S.E.
CALGARY, ALBERTA, CANADA T2H 2M3
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7900968
US20080191900
11674343
Correspondence name and address
RYAN A. SCHNEIDER
600 PEACHTREE STREET, N.E., SUITE 5200
TROUTMAN SANDERS LLP
ATLANTA, GA 30308-2216
Assignment: 11
Reel/Frame:024429/0514   Pages: 7
Recorded: 05/24/2010
Attorney Dkt #:EXTREME1DIV
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
DOPF, ANTHONY R.
Exec Dt:
09/25/2007
2
LOGAN, DEREK W.
Exec Dt:
09/25/2007
3
CAMWELL, PAUL L.
Exec Dt:
09/25/2007
4
WHALEN, DAVID D.
Exec Dt:
09/25/2007
5
VERMEEREN, THOMAS H.
Exec Dt:
11/06/2007
Assignee
1
EXTREME ENGINEERING LTD
BAY 14, 5925 - 12TH STREET S.E.
CALGARY, ALBERTA, T2H 2M3, CANADA
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20100043229
12609512
Correspondence name and address
RYAN A. SCHNEIDER
600 PEACHTREE STREET, N.E., SUITE 5200
BANK OF AMERICA PLAZA
ATLANTA, GA 30308-2216
Assignment: 12
Reel/Frame:025243/0189   Pages: 7
Recorded: 11/03/2010
Attorney Dkt #:EXTREME1CON
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
DOPF, ANTHONY R.
Exec Dt:
09/25/2007
2
LOGAN, DEREK W.
Exec Dt:
09/25/2007
3
CAMWELL, PAUL L.
Exec Dt:
09/25/2007
4
WHALEN, DAVID D.
Exec Dt:
09/25/2007
5
VERMEEREN, THOMAS H.
Exec Dt:
09/06/2007
Assignee
1
EXTREME ENGINEERING LTD.
BAY 14, 5925 - 12TH STREET S.E.
CALGARY
ALBERTA, T2H 2M3, CANADA
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8308199
US20110036557
12911261
Correspondence name and address
RYAN A. SCHNEIDER
600 PEACHTREE STREET, NE, SUITE 5200
BANK OF AMERICA PLAZA
ATLANTA, GA 30308-2216
Assignment: 13
Reel/Frame:020788/0597   Pages: 5
Recorded: 04/07/2008
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
DRUMHELLER, DOUGLAS S.
Exec Dt:
12/12/2007
2
CAMWELL, PAUL L
Exec Dt:
12/12/2007
3
DOPF, ANTHONY R.
Exec Dt:
12/12/2007
4
LOGAN, DEREK W.
Exec Dt:
12/12/2007
Assignee
1
XACT DOWNHOLE TELEMETRY INC.
BAY 14, 5925-12TH STREET S.E.
CALGARY, ALBERTA, CANADA T2H 2M3
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20070153629
11606818
Correspondence name and address
BRIAN Y. LEE
GOWLING LAFLEUR HENDERSON LLP
1055 DUNSMUIR STREET, #2300
VANCOUVER, BC V7X 1J1
Assignment: 14
Reel/Frame:026631/0537   Pages: 4
Recorded: 07/21/2011
Attorney Dkt #:SBERG1
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
DOPF, ANTHONY R.
Exec Dt:
04/14/2008
2
LOGAN, DEREK W.
Exec Dt:
04/09/2008
3
HOLMEN, GARRY
Exec Dt:
04/09/2008
Assignee
1
EXTREME ENGINEERING LTD.
BAY 14, 5825- 12TH STREET S.E.
CALGARY
ALBERTA, CANADA T2H 2M3
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8648733
US20110309949
12812440
Correspondence name and address
TROUTMAN SANDERS LLP
600 PEACHTREE ST NE
STE 5200
ATLANTA, GA 30308
Assignment: 15
Reel/Frame:024061/0397   Pages: 7
Recorded: 03/10/2010
Attorney Dkt #:3435-81346-02
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
DRUMHELLER, DOUGLAS S.
Exec Dt:
02/16/2010
2
CAMWELL, PAUL L.
Exec Dt:
02/11/2010
3
DOPF, ANTHONY R.
Exec Dt:
02/13/2010
4
LOGAN, DEREK W.
Exec Dt:
02/12/2010
Assignee
1
XACT DOWNHOLE TELEMETRY INC.
930 55TH AVENUE NE
CALGARY, ALBERTA, CANADA T2E 6Y4
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8270251
US20100157741
12645353
Correspondence name and address
JEFFREY B. HAENDLER
121 SW SALMON STREET
ONE WORLD TRADE CENTER, SUITE 1600
PORTLAND, OR 97204
Assignment: 16
Reel/Frame:029653/0001   Pages: 15
Recorded: 01/18/2013
Attorney Dkt #:92.1257 USNP ASSIGNMENT
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
HAUGVALDSTAD, KJELL
Exec Dt:
11/22/2011
2
LOGAN, DEREK W.
Exec Dt:
04/01/2012
3
DOPF, ANTHONY R.
Exec Dt:
04/15/2012
4
LOGAN, AARON
Exec Dt:
04/05/2012
5
UTTER, ROBERT
Exec Dt:
11/09/2011
Assignee
1
SCHLUMBERGER TECHNOLOGY CORPORATION
300 SCHLUMBERGER DRIVE
SUGAR LAND, TEXAS 77478
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
9004196
US20130032412
13266086
Correspondence name and address
SCHLUMBERGER - COE
WESTERNGECO 10001 RICHMOND AVE.
ROOM 3028
HOUSTON, TX 77042
Assignment: 17
Reel/Frame:029665/0718   Pages: 15
Recorded: 01/21/2013
Attorney Dkt #:92.1260US PCT ASSIGNMENT
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
CLARK, BRIAN
Exec Dt:
11/09/2011
2
TAHERIAN, REZA
Exec Dt:
05/23/2012
3
LOGAN, DEREK W.
Exec Dt:
04/01/2012
4
DOPF, ANTHONY R.
Exec Dt:
04/15/2012
5
LOGAN, AARON
Exec Dt:
04/05/2012
6
UTTER, ROBERT
Exec Dt:
06/05/2012
Assignee
1
SCHLUMBERGER TECHNOLOGY CORPORATION
300 SCHLUMBERGER DRIVE
SUGAR LAND, TEXAS 77478
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
9022144
US20130043874
13266080
Correspondence name and address
SCHLUMBERGER - COE
WESTERNGECO 10001 RICHMOND AVE.
ROOM 3028
HOUSTON, TX 77042
Assignment: 18
Reel/Frame:030037/0698   Pages: 16
Recorded: 03/19/2013
Attorney Dkt #:19.0594USNP ASSIGNMENT
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
LOGAN, DEREK W.
Exec Dt:
04/01/2012
2
DOPF, ANTHONY R.
Exec Dt:
04/15/2012
3
LOGAN, AARON
Exec Dt:
04/05/2012
4
UTTER, ROBERT
Exec Dt:
11/08/2011
5
CLARK, BRIAN
Exec Dt:
11/04/2011
6
TAHERIAN, REZA
Exec Dt:
05/23/2012
Assignee
1
SCHLUMBERGER TECHNOLOGY CORPORATION
300 SCHLUMBERGER DRIVE
SUGAR LAND, TEXAS 77478
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
9109403
US20120085583
13266064
Correspondence name and address
SCHLUMBERGER - COE
WESTERNGECO 10001 RICHMOND AVE.
ROOM 3028
HOUSTON, TX 77042

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