Patent Assignment
Reel/Frame 048120/0100
Assignment of Assignor's Interest
Recorded: 2019-01-24
Pages: 3
Assignors
ZAZULA, RENNIE K.
Executed: 2015-01-20
BIRD, DEAN M.
Executed: 2015-01-20
CROSSWHITE, DONALD T.
Executed: 2015-01-20
Assignee
NATIONAL OILWELL VARCO CANADA ULC
6621 45TH STREET, LEDUC, ALBERTA, T9E 7E3, CANADA
Covered Property
(1)
Systems, Apparatuses, and Methods for Treating Drilling Fluid
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Corrective Assignment to Correct the Assignee's Name Previously Recorded at Reel: 048120 Frame: 0100. Assignor(S) Hereby Confirms the Assignment.
Nov 17, 2020
From: ZAZULA, RENNIE K.; BIRD, DEAN M.; CROSSWHITE, DONALD T.
To: VARCO CANADA ULC
Reel/Frame 054451/0314 →
Merger
Nov 11, 2021
From: VARCO CANADA ULC
To: NOV CANADA ULC
Reel/Frame 058518/0106 →
Merger
Nov 11, 2021
From: DRECO ENERGY SERVICES ULC
To: NOV CANADA ULC
Reel/Frame 058838/0015 →