Patent Assignment
Reel/Frame 004123/0592
Assignment of Assignors Interest.
Recorded: 1983-05-03
Pages: 2
Assignee
ALCON PHARMACEUTICALS LIMITED
6330 CHAM, SWITZERLAND
Covered Property
(1)
Treatment Process for Rendering Corneal Contact Lenses Hydrophilic
Patent:
4,409,258 →
Application:
06/260,674 →
Related Assignments
(2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest.
Jul 7, 1988
From: CIBA-GEIGY AG, A SWISS COMPANY
To: CIBA-GEIGY CORPORATION, A CO. OF NY
Reel/Frame 004940/0559 →
Assignment of Assignors Interest.
May 10, 1991
From: CIBA-GEIGY CORPORATION, A NY COMPANY
To: CIBA VISION CORPORATION A COMPANY OF DE
Reel/Frame 005699/0274 →