Patent · US Active

Method for making a colored contact lens

US8703025B2 · kind B2 · utility

1Cited by

29References

11Claims

0Family size

Assignee

Novartis AG · CH

Inventors

Gabriela Cocora · Elsenfeld, DE
Axel Heinrich · Aschaffenburg, DE

Key dates

Filing date	Nov 2, 2010
Grant date	Apr 22, 2014
Priority date	—
Expiry date	Jan 18, 2031

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29D11/00038
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The present invention relates to a method for the manufacture of a contact lens with a printed image thereon, in particular a silicone hydrogel contact lens with a printed image thereon, comprising applying one or more ink drops to at least a portion of at least one molding surface of a lens mold, wherein each ink drop is sufficiently flat, that the forces exerted by the mold surface to the ink drop surface in the area where they make contact, are higher than the forces exerted by the flowing lens forming material to the facing surface of the ink drop, and wherein the ink material and the lens forming material are sufficiently immiscible or not miscible at all.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.