Patent Assignment
Reel/Frame 008006/0637
Assignment of Assignor's Interest
Recorded: 1996-06-27
Pages: 3
Assignor
AMERICAN COLLOID COMPANY
Executed: 1996-05-09
Assignee
ENGELHARD CORPORATION
101 WOOD AVENUE, ISELIN, NEW JERSEY, 08830
Covered Properties
(2)
Process for Acid Treating Clay for Improved Filtration
Patent:
4,717,699 →
Application:
06/815,704 →
Process of Acid Binding Fine Smectite Clay Particles into Granules
Patent:
5,330,946 →
Application:
08/011,273 →
Related Assignments
(3)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignors Interest.
Jan 2, 1986
From: MICKELSON, GRANT A.
To: AMERICAN COLLOID COMPANY, A CORP. OF DE.
Reel/Frame 004517/0362 →
Assignment of Assignors Interest.
Mar 18, 1993
From: HYNES, RUSSELL E.; NEBERGALL, ROBERT S.
To: AMERICAN COLLOID COMPANY A CORP. OF DELAWARE
Reel/Frame 006464/0185 →
Change of Name
Dec 18, 1995
From: AMERICAN COLLOID COMPANY
To: AMCOL INTERNATIONAL CORPORATION, A DELAWARE CORPORATION
Reel/Frame 007749/0264 →