Patent · US Active

Method for removing lens forming material deposited on a lens forming surface

US11759980B2 · kind B2 · utility

0Cited by

0References

5Claims

0Family size

Assignee

ALCON INC. · CH

Inventors

Stefan Kastl · Aschaffenburg, DE
Steffen Paulekuhn · Hanau, DE
Stephan Pirl · Obernburg, DE
Gabriela Cocora · Elsenfeld, DE

Key dates

Filing date	Oct 29, 2020
Grant date	Sep 19, 2023
Priority date	—
Expiry date	Oct 29, 2040

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29C2033/725
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A method of removing a lens forming material deposited on a lens forming surface (1) of a reusable glass mold for forming ophthalmic lenses, in particular contact lenses or intraocular lenses, comprises the steps of providing a plasma (2), exposing the lens forming surface (1) of the reusable glass mold to the plasma (2) for removing the lens forming material deposited on the lens forming surface (1). The plasma (2) is generated under atmospheric pressure and potential-free, or is generated under reduced pressure.

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