Patent Assignment
Reel/Frame 046839/0452
Assignment of Assignor's Interest
Recorded: 2018-09-11
Pages: 9
Assignors
CHINWANGSO, PAWILAI
Executed: 2016-09-12
ZHANG, HUI
Executed: 2016-09-06
SUI, CHANGPING
Executed: 2016-09-08
PAUFERRO, PAULO, JR.
Executed: 2016-09-06
Assignee
M-I L.L.C.
5950 NORTH COURSE DRIVE, HOUSTON, TEXAS, 77072
Covered Property
(1)
Reversible Oil-Based Mud
Related Assignments
(1)
Other recorded transfers of the patent in this record — the chain of ownership.