Patent Assignment
Reel/Frame 003805/0851
Change of Name
Recorded: 1980-11-10
Pages: 5
Assignor
OIL BASE, INC.
Executed: 1980-10-08
Assignee
OBI-HUGHES, INC.
TEXAS
Covered Properties
(2)
Clayfree Aqueous Sea Water Drilling Fluid
Patent:
3,878,110 →
Application:
05/300,389 →
Apparatus and Method for Removing Hydrocarbons from Drill Cuttings
Patent:
4,222,988 →
Application:
05/903,304 →
Related Assignments
(3)
Other recorded transfers of the patents in this record — the chain of ownership.
Merger Effective Date 12/31/81 State of Incorp. Del.
Feb 24, 1982
From: OBI HUGHES INC.
To: HUGHES TOOL COMPANY
Reel/Frame 003960/0771 →
Change of Name Effective Date 8-26-80
Feb 24, 1982
From: OIL BASE, INC.
To: OBI-HUGHES, INC.,
Reel/Frame 003960/0777 →
Assignment of Assignors Interest.
Aug 8, 1988
From: HUGHES TOOL COMPANY
To: BAKER HUGHES INCORPORATED
Reel/Frame 005050/0861 →