Patent Assignment
Reel/Frame 049213/0972
Assignment of Assignor's Interest
Recorded: 2019-05-17
Pages: 6
Assignors
ZHANG, ZHIHUI
Executed: 2019-05-08
XU, YINGQING
Executed: 2019-05-08
XU, ZHIYUE
Executed: 2019-05-08
Assignee
BAKER HUGHES OILFIELD OPERATIONS LLC
17021 ALDINE WESTFIELD, HOUSTON, TEXAS, 77073
Covered Property
(1)
Wellbore Isolation Barrier Including Negative Thermal Expansion Material