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Assignee Name : CALFRAC WELL SERVICES LTD.
Total Assignments: 16
Assignment: 1
Reel/Frame:012196/0216   Pages: 4
Recorded: 09/28/2001
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
ALLAN, TRAVIS L.
Exec Dt:
08/10/2001
2
AMIN, JUNID
Exec Dt:
08/07/2001
3
OLSON, ALAN K.
Exec Dt:
08/07/2001
4
PIERCE, RONALD G.
Exec Dt:
08/07/2001
Assignees
1
CALFRAC WELL SERVICES LTD.
#300, 513 8TH AVE. S.W.
CALGARY, ALBERTA, CANADA T2P 1
2
CHEMERGY LTD.
#2, 4816 35B STREET, S.E.
CALGARY, ALBERTA, CANADA T2P 1
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6844297
US20020039972
09924115
Correspondence name and address
HOFFMAN, WASSON & GITLER, P.C.
STEWART L. GITLER
2361 JEFFERSON DAVIS HIGHWAY, SUITE 522
ARLINGTON, VIRGINIA 22202
Assignment: 2
Reel/Frame:012390/0561   Pages: 4
Recorded: 12/28/2001
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
ALLAN, TRAVIS L.
Exec Dt:
12/06/2001
2
AMIN, JUNAD
Exec Dt:
12/06/2001
3
OLSON, ALAN K.
Exec Dt:
12/06/2001
4
PIERCE, RONALD G.
Exec Dt:
12/06/2001
5
BOBIER, DWIGHT M.
Exec Dt:
12/06/2001
Assignees
1
CALFRAC WELL SERVICES LTD.
#300, 513-8TH AVENUE, SW
CALGARY, ALBERTA, CANADA T2P 1
2
CHEMERGY LTD.
#2, 4816 - 35B STREET, SE
CALGARY, ALBERTA, CANADA T2B 3
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6838418
US20020065359
09966750
Correspondence name and address
HOFFMAN, WASSON & GITLER, PC
STEWART L. GITLER
2361 JEFFERSON DAVIS HIGHWAY
SUITE 522
ARLINGTON, VA 22202
Assignment: 3
Reel/Frame:015473/0722   Pages: 3
Recorded: 12/17/2004
Attorney Dkt #:A-9158
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
HAMILTON, BRENDA
Exec Dt:
12/05/2004
Assignee
1
CALFRAC WELL SERVICES LTD.
411-8 AVENUE S.W.
CALGARY, ALBERTA, CANADA T2P 1E3
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7841397
US20060000620
10880600
Correspondence name and address
HOFFMAN, WASSON & GITLER, P.C.
STEWART L. GITLER
2461 S. CLARK STREET
CRYSTAL CENTER 2 - SUITE 522
ARLINGTON, VA 22202
Assignment: 4
Reel/Frame:017079/0660   Pages: 3
Recorded: 11/29/2005
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
HAMILTON, BRENDON
Exec Dt:
12/05/2004
Assignee
1
CALFRAC WELL SERVICES LTD.
411-8 AVENUE S.W.
CALGARY, ALBERTA, CANADA T2P 1E3
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7841397
US20060000620
10880600
Correspondence name and address
STEWART L. GTTLER
HOFFMAN, WASSON & GITLER, P.C.
CRYSTAL CENTER 2-SUITE 522
2461 S. CLARK STREET
ARLINGTON, VA 22202
Assignment: 5
Reel/Frame:020555/0320   Pages: 5
Recorded: 02/26/2008
Attorney Dkt #:A-7.RCE; A-7519 ET AL.
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
CHEMERGY LTD.
Exec Dt:
01/31/2008
Assignee
1
CALFRAC WELL SERVICES LTD.
411-8 AVENUE S.W.
CALGARY, ALBERTA, CANADA T2P 1E3
Properties
 
Pat #
Pub #
Intl #
App #
 
Pat #
Pub #
Intl #
App #
 
Pat #
Pub #
Intl #
App #
 
6844297
US20020039972
09924115
 
6838418
US20020065359
09966750
 
7399732
US20060178277
10739114
Correspondence name and address
STEWART L. GITLER
HOFFMAN, WASSON & GITLER, P.C.
2461 SOUTH CLARK STREET
SUTIE 522
ARLINGTON, VA 22202
Assignment: 6
Reel/Frame:021122/0022   Pages: 2
Recorded: 06/19/2008
Attorney Dkt #:44609-58
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
BRINE-ADD FLUIDS LTD.
Exec Dt:
06/10/2008
Assignee
1
CALFRAC WELL SERVICES LTD.
411 - 8 AVENUE SW
CALGARY, CANADA T2P 1E3
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7422061
US20070102160
11164010
Correspondence name and address
ROSEANN B. CALDWELL, BENNETT JONES LLP
4500 BANKERS HALL EAST
855-2ND STREET SW
CALGARY, T2P 4K7 CANADA
Assignment: 7
Reel/Frame:025492/0067   Pages: 4
Recorded: 12/14/2010
Attorney Dkt #:A-11656
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
BOBIER, DWIGHT M.
Exec Dt:
07/23/2009
2
BATTENFELDER, DONALD ROBERT
Exec Dt:
07/20/2009
3
WISE, LESLIE M.
Exec Dt:
07/15/2009
Assignee
1
CALFRAC WELL SERVICES LTD.
411 - 8TH AVE., S.W.
CALGARY, ALBERTA, CANADA T2P 1E3
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8672032
US20100326663
12801820
Correspondence name and address
WELSH FLAXMAN & GITLER LLC
SUITE 100
2000 DUKE STREET
ALEXANDRIA, VA 22314
Assignment: 8
Reel/Frame:024827/0267   Pages: 10
Recorded: 08/12/2010
Attorney Dkt #:2472-005 US
Conveyance: MERGER (SEE DOCUMENT FOR DETAILS).
Assignor
1
CENTURY OILFIELD SERVICES, INC.
Exec Dt:
01/01/2010
Assignee
1
CALFRAC WELL SERVICES LTD.
855 - 2ND STREET SW
SUITE 4500
CALGARY, CANADA T2P 4K7
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7810570
US20070295508
11552889
Correspondence name and address
GOODWIN MCKAY
602 - 12TH AVENUE SW
SUITE 222, PARKSIDE PLACE
CALGARY, T2R 1J3 CANADA
Assignment: 9
Reel/Frame:025104/0722   Pages: 8
Recorded: 10/07/2010
Attorney Dkt #:2691-0014
Conveyance: MERGER (SEE DOCUMENT FOR DETAILS).
Assignor
1
CENTURY OILFIELD SERVICES INC.
Exec Dt:
01/01/2010
Assignee
1
CALFRAC WELL SERVICES LTD.
4500, 855 - 2ND STREET S.W.
CALGARY, CANADA T2P 4K7
Properties
 
Pat #
Pub #
Intl #
App #
 
Pat #
Pub #
Intl #
App #
 
Pat #
Pub #
Intl #
App #
 
8211834
US20100101796
12457559
 
NONE
US20100044048
12458763
 
8387699
US20100044049
12509544
Correspondence name and address
BRIAN SIRITZKY
4300 WILSON BLVD.
7TH FLR.; DAVIDSON BERQUIST
ARLINGTON, VA 22203
Assignment: 10
Reel/Frame:030649/0706   Pages: 10
Recorded: 06/20/2013
Attorney Dkt #:2691-0021
Conveyance: MERGER (SEE DOCUMENT FOR DETAILS).
Assignors
1
CENTURY OILFIELD SERVICES, INC.
Exec Dt:
01/01/2010
2
CALFRAC WELL SERVICES LTD.
Exec Dt:
01/01/2010
Assignee
1
CALFRAC WELL SERVICES LTD.
4500, 855 - 2ND STREET S.W.
CALGARY, CANADA T2P 4K7
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20130157904
13768188
Correspondence name and address
BRIAN SIRITZKY
4300 WILSON BLVD.
7TH FLOOR
ARLINGTON, VA 22203
Assignment: 11
Reel/Frame:029416/0325   Pages: 5
Recorded: 12/06/2012
Attorney Dkt #:MOFF-005
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
PIERCE, RONALD
Exec Dt:
11/16/2011
2
BOBIER, DWIGHT
Exec Dt:
11/24/2011
Assignee
1
CALFRAC WELL SERVICES LTD.
411-8TH AVENUE SW
CALGARY, AB, CANADA T2P 1E3
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20130137609
13687334
Correspondence name and address
WELSH FLAXMAN & GITLER LLC
2000 DUKE STREET
SUITE 100
ALEXANDRIA, VA 22314
Assignment: 12
Reel/Frame:029446/0300   Pages: 3
Recorded: 12/11/2012
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
PIERCE, RONALD
Exec Dt:
12/09/2011
2
BOBIER, DWIGHT
Exec Dt:
12/09/2011
Assignee
1
CALFRAC WELL SERVICES LTD.
411-8TH AVENUE S.W.
CALGARY, AB, CANADA T2P 1E3
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20130153232
13710959
Correspondence name and address
WELSH FLAXMAN & GITLER LLC
2000 DUKE STREET, SUITE 100
ALEXANDRIA, VA 22314
Assignment: 13
Reel/Frame:029446/0629   Pages: 3
Recorded: 12/11/2012
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
PIERCE, RONALD
Exec Dt:
12/09/2011
2
BOBIER, DWIGHT
Exec Dt:
12/09/2011
Assignee
1
CALFRAC WELL SERVICES LTD.
411-8TH AVENUE S.W.
CALGARY, AB, CANADA T2P 1E3
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
9365764
US20130153234
13711008
Correspondence name and address
WELSH FLAXMAN & GITLER LLC
2000 DUKE STREET, SUITE 100
ALEXANDRIA, VA 22314
Assignment: 14
Reel/Frame:031610/0350   Pages: 2
Recorded: 11/15/2013
Attorney Dkt #:409084-5
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
RHODES, GEORGE W.
Exec Dt:
10/23/2013
Assignee
1
CALFRAC WELL SERVICES LTD.
411-8TH AVENUE S.W.
CALGARY, CANADA T2P 1E3
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20140116141
14062178
Correspondence name and address
MALCOLM J. MACDONALD
1727 KING STREET, SUITE 105
ALEXANDRIA, VA 22314
Assignment: 15
Reel/Frame:035817/0855   Pages: 3
Recorded: 06/10/2015
Attorney Dkt #:MOFF-009
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ZOTSKINE, YOUSSOUF
Exec Dt:
01/17/2014
Assignee
1
CALFRAC WELL SERVICES LTD.
411-8TH AVENUE S.W.
CALGARY, AB, CANADA T2P 1E3
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20150361777
14735748
Correspondence name and address
WELSH FLAXMAN & GITLER LLC
2000 DUKE STREET, SUITE 100
ALEXANDRIA, VA 22314
Assignment: 16
Reel/Frame:035809/0235   Pages: 4
Recorded: 06/09/2015
Attorney Dkt #:MOFF-008
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
SINCLAIR-SMITH, KYLE
Exec Dt:
08/18/2014
2
ALIBHAI, REHAN
Exec Dt:
08/18/2014
3
ZOTSKINE, YOUSSOUF
Exec Dt:
08/19/2014
Assignee
1
CALFRAC WELL SERVICES LTD.
411-8TH AVENUE S.W.
CALGARY, AB, CANADA T2P 1E3
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20160362969
14734389
Correspondence name and address
WELSH FLAXMAN & GITLER LLC
2000 DUKE STREET, SUITE 100
ALEXANDRIA, VA 22314

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