Granted Patent
Utility
US 5,114,628 · App. 07/644,355
Method for the manufacture of contact lenses
Inventors:
Peter Hofer, Peter Hagmann, Gunther Krieg, Eberhard Vaas
Patented Case
View Patent ↗
Granted: May 19, 1992
Filed: Jan 23, 1991
Inventors
Peter Hofer
Peter Hagmann
Gunther Krieg
Eberhard Vaas
Assignee (at issue)
Ciba-Geigy
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.