Method for surface treatment of contact lenses

US4214014A · kind A · utility

Assignee

• Titmus Eurocon Kontaktlinsen GmbH & Co. KG.

Inventors

• Peter Hofer · Liestal, CH
• Wolfgang Kohl · Kleinwallstadt, DE

Key dates

• Filing date: Oct 12, 1978
• Grant date: Jul 22, 1980
• Expiry date: Oct 12, 1998

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B29L2011/00
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

Surface treatment for hard or dehydrated hydrophilic contact lenses, to reduce the deposit of impurities thereon, comprising subjecting the lens, after shaping and polishing, to a gas discharge, e.g., in an oxygen atmosphere.