IP Library › Assignment 026142/0984
Patent Assignment
Reel/Frame 026142/0984

Assignment of Assignor's Interest

Recorded: 2011-04-18 Pages: 4
Assignors
ZHANG, KEWEI
Executed: 2011-04-12
SHERMAN, SCOTT
Executed: 2011-04-12
Assignee
TRICAN WELL SERVICE LTD.
645-7TH AVENUE S.W., SUITE 2900, CALGARY, ALBERTA, T2P 4G8, CANADA
Covered Property (1)
Applications of Smart Fluids in Well Service Operations
Patent: 9,206,659 →
Application: 13/021,698 →
Publication: US 2011/0186297
Related Assignments (3)
Other recorded transfers of the patent in this record — the chain of ownership.
Security Interest Jan 13, 2016
From: TRICAN WELL SERVICE LTD.
To: COMPUTERSHARE TRUST COMPANY OF CANADA
Reel/Frame 037482/0702 →
Assignment of Assignor's Interest Dec 3, 2019
From: TRICAN WELL SERVICE LTD.
To: SHERMAN, SCOTT, SHER
Reel/Frame 051167/0954 →
Security Interest Jun 2, 2022
From: FEDORA, BRADLEY P.D.
To: OLYMPIA TRUST COMPANY
Reel/Frame 060087/0101 →