IP Library › Assignment 034601/0454
Patent Assignment
Reel/Frame 034601/0454

Assignment of Assignor's Interest

Recorded: 2014-12-30 Pages: 3
Assignors
RIBEIRO, SERGIO S.
Executed: 2013-10-30
MARCHESINI, FLAVIO H.
Executed: 2013-10-30
Assignee
HALLIBURTON ENERGY SERVICES, INC.
3000 N. SAM HOUSTON PARKWAY E., HOUSTON, TEXAS, 77032-3219
Covered Property (1)
Modular Sensed Annular Well Apparatus for Cement Testing
Patent: 9,939,419 →
Application: 14/411,994 →
Publication: US 2016/0274078
Related Assignments (2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest Jun 23, 2017
From: PETROLEO BRASILEIRO S.A. - PETROBRAS
To: HALLIBURTON SERVICOS LTDA
Reel/Frame 042800/0341 →
Corrective Assignment to Correct the Assignor and Assignee Previously Recorded at Reel: 042800 Frame: 0341. Assignor(S) Hereby Confirms the Assignment. Feb 22, 2018
From: HALLIBURTON ENERGY SERVICES, INC.
To: PETROBRAS; HALLIBURTON ENERGY SERVICES, INC.
Reel/Frame 045390/0638 →