Patent Assignment
Reel/Frame 006938/0086
Assignment of Assignor's Interest
Recorded: 1994-03-24
Pages: 2
Assignor
PATEL, ARVIND D.
Executed: 1994-03-24
Assignee
M-I DRILLING FLUIDS COMPANY
5950 NORTH COURE DRIVE, HOUSTON, TEXAS, 77072
Covered Property
(1)
Aqueous Based Drilling Fluid Additive and Composition
Patent:
5,639,715 →
Application:
08/217,432 →
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Change of Name
Aug 14, 1998
From: M-I DRILLING FLUIDS L.L.C., A DELAWARE LIMITED LIABILITY COMPANY
To: M-I L.L.C., A DELAWARE LIMITED LIABILITY COMPANY
Reel/Frame 009375/0719 →
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 L.L.C.
To: M-I HOLDINGS L.L.C.
Reel/Frame 025192/0511 →