Patent Assignment
Reel/Frame 006359/0670
Assignment of Assignors Interest.
Recorded: 1992-12-17
Pages: 3
Assignor
ENVIRONMENTAL RESEARCH INSTITUTE OF MICHIGAN
Executed: 1992-12-15
Assignee
FIALA, WERNER J.
STAUDGASSE 88/11, A-1180 VIENNA, AUSTRALIA
Covered Property
(1)
Bifocal Ophthalmic Lens Constructed from Birefringent Material
Patent:
5,073,021 →
Application:
07/324,827 →
Related Assignments
(4)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest.
Mar 17, 1989
From: MARRON, JOSEPH C.
To: ERIM*, ANN ARBOR, MI A NON-PROFIT ORGANIZATION OF MI
Reel/Frame 005055/0617 →
Assignment of Assignors Interest.
Apr 1, 1993
From: FIALA, WERNER J.
To: BIFOCON OPTICS GMBH
Reel/Frame 006467/0517 →
Assignment of Assignor's Interest
Aug 12, 1999
From: ERIM INTERNATIONAL, INC.
To: ENVIRONMENTAL RESEARCH INSTITUTE OF MICHIGAN
Reel/Frame 010018/0582 →
Confirmatory Assignment
Aug 16, 1999
From: ENVIRONMENTAL RESEARCH INSTITUTE OF MICHIGAN
To: ERIM INTERNATIONAL, INC.
Reel/Frame 010018/0259 →