Patent Assignment
Reel/Frame 004168/0571
Assignment of Assignors Interest.
Recorded: 1983-08-15
Pages: 1
Assignee
AMICON CORPORATION, A MA CORP.
25 HARTWELL AVE., LEXINGTON, MASSACHUSETTS, 02173
Covered Property
(1)
Centrifugal Microconcentrator and Methods for Its Use
Patent:
4,632,761 →
Application:
06/523,208 →
Related Assignments
(4)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest.
Nov 22, 1985
From: AMICON CORPORATION
To: W. R. GRACE & CO., A CORP OF CONNECTICUT
Reel/Frame 004480/0419 →
Merger
Aug 24, 1989
From: GRACE MERGER CORP. A CT CORP. (MERGED INTO); W. R. GRACE & CO. A CT. CORP.
To: W. R. GRACE & CO.-CONN.
Reel/Frame 005206/0001 →
Assignment of Assignors Interest.
Jan 8, 1993
From: W.R. GRACE & CO. -CONN.
To: AMICON, INC.
Reel/Frame 006376/0566 →
Assignment of Assignor's Interest
Jun 9, 1997
From: W.R. GRACE & CO.-CONN. AND AMICON,INC.
To: MILLIPORE INVESTMENT HOLDINGS LIMITED
Reel/Frame 008587/0224 →