Patent Assignment
Reel/Frame 008645/0791
Assignment of Assignor's Interest
Recorded: 1997-06-23
Pages: 2
Assignor
PATEL, ARVIND D.
Executed: 1997-06-23
Assignee
M-1 DRILLING FLUIDS L.L.C.
5950 NORTH COURSE DRIVE, HOUSTON, TEXAS, 77072
Covered Property
(1)
Oil-Based Drilling Fluid
Patent:
5,888,944 →
Application:
08/880,266 →
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Oct 26, 2010
From: M-I HOLDINGS L.L.C.
To: M-I L.L.C.
Reel/Frame 025192/0491 →
Change of Name
Oct 26, 2010
From: M-I DRILLING FLUIDS L.L.C.
To: M-I L.L.C.
Reel/Frame 025192/0508 →
Change of Name
Oct 26, 2010
From: M-I L.L.C.
To: M-I HOLDINGS L.L.C.
Reel/Frame 025192/0511 →