Granted Patent
Utility
US 4,214,014 · App. 05/950,894
Method for surface treatment of contact lenses
Inventors:
Peter Hofer, Wolfgang Kohl
Patented Case
View Patent ↗
Granted: Jul 22, 1980
Filed: Oct 12, 1978
Inventors
Peter Hofer
Wolfgang Kohl
Assignee (at issue)
Titmus Eurocon Kontaktlinsen GmbH & Co. KG.
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.