Patent Assignment Abstract of Title
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Total Assignments:
3
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Patent #:
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Issue Dt:
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06/14/2005
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Application #:
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10275295
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Filing Dt:
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03/31/2003
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Publication #:
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Pub Dt:
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09/11/2003
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Inventors:
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Kewei Zhang, Bill Oneil
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Title:
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FRACTURING WITH VISCOELASTIC SURFACTANT BASED FLUID
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Assignment:
1
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ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
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| 645-7TH AVENUE S.W. |
| CALGARY, ALBERTA, CANADA T2P 4G8 |
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| EUGENE F. DERENYI |
| STIKEMAN ELLIOTT LLP |
| 1600-50 O'CONNOR STREET |
| OTTAWA, ONTARIO K1P 6L2 |
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Assignment:
2
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SECURITY INTEREST (SEE DOCUMENT FOR DETAILS).
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| 600, 530 - 8TH AVENUE S.W. |
| CALGARY, ALBERTA, CANADA T2P 3S8 |
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| ANNIE AYMOND-NORTON ROSE FULBRIGHT USLLP |
| 1301 MCKINNEY STREET |
| HOUSTON, TX 77010 |
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Assignment:
3
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SECURITY INTEREST (SEE DOCUMENT FOR DETAILS).
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| 520 - 3RD AVENUE SW |
| SUITE 4000 |
| CALGARY, CANADA T2P 0R3 |
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| NORTON ROSE FULBRIGHT CANADA LLP |
| 2500-1 PLACE VILLE-MARIE |
| MONTRÉAL, PQC H3B 1R1 |
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