Patent Assignment
Reel/Frame 012155/0285
Change of Name
Recorded: 2001-09-10
Pages: 2
Assignor
NOWSCO-FRACMASTER COMPANY
Executed: 2000-05-23
Assignee
BJ SERVICES COMPANY CANADA
1300 801-6TH AVENUE, S.W., CALGARY, ALBERTA, T2P 4L8, CANADA
Covered Property
(1)
Foam-Fluid for Fracturing Subterranean Formations
Patent:
6,410,489 →
Application:
09/474,149 →
Related Assignments
(4)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Dec 29, 1999
From: ZHANG, KEWEI; PIERCE, RON; LITT, NICOLE DEANNE; GUPTA, D.V. SATYANARAYANA
To: NOWSCO-FRACMASTER LTD.
Reel/Frame 010498/0250 →
Certificate of Amendment
Sep 10, 2001
From: NOWSCO-FRACMASTER, LTD.
To: NOWSCO-FRACMASTER COMPANY
Reel/Frame 012155/0330 →
Assignment of Assignor's Interest
Feb 13, 2012
From: BAKER HUGHES CANADA COMPANY
To: BAKER HUGHES INCORPORATED
Reel/Frame 027695/0065 →
Certificate of Amalgamation
Feb 13, 2012
From: BJ SERVICES COMPANY CANADA
To: BAKER HUGHES CANADA COMPANY
Reel/Frame 027697/0211 →