Patent Assignment
Reel/Frame 045390/0638
Corrective Assignment to Correct the Assignor and Assignee Previously Recorded at Reel: 042800 Frame: 0341. Assignor(S) Hereby Confirms the Assignment.
Recorded: 2018-02-22
Pages: 10
Assignor
HALLIBURTON ENERGY SERVICES, INC.
Executed: 2017-02-02
Assignees
PETROBRAS
AVENIDA REPUBLICA DO CHILE, NO. 65, RIO DE JANEIRO, BRAZIL
HALLIBURTON ENERGY SERVICES, INC.
3000 N. SAM HOUSTON PARKWAY E., HOUSTON, TEXAS, 77032
Covered Properties
(3)
Methods for Producing Fluid Migration Resistant Cement Slurries
Methods for Producing Fluid Invasion Resistant Cement Slurries
Modular Sensed Annular Well Apparatus for Cement Testing
Related Assignments
(4)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignor's Interest
May 27, 2014
From: KHAMMAR, MEROUANE; MARCHESINI, FLAVIO; SANTRA, ASHOK; PAIVA, MARIA DAS DORES
To: HALLIBURTON ENERGY SERVICES, INC.
Reel/Frame 032968/0567 →
Assignment of Assignor's Interest
Dec 30, 2014
From: RIBEIRO, SERGIO S.; MARCHESINI, FLAVIO H.
To: HALLIBURTON ENERGY SERVICES, INC.
Reel/Frame 034601/0454 →
Assignment of Assignor's Interest
Apr 9, 2015
From: MARCHESINI, FLAVIO H.; DE OLIVEIRA, RAFAEL MENEZES; KHAMMAR, MEROUANE; SANTRA, ASHOK K.
To: HALLIBURTON ENERGY SERVICES, INC.
Reel/Frame 035373/0648 →
Assignment of Assignor's Interest
Jun 23, 2017
From: PETROLEO BRASILEIRO S.A. - PETROBRAS
To: HALLIBURTON SERVICOS LTDA
Reel/Frame 042800/0341 →