Method for producing contact lenses
US11358353B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 14, 2017 |
| Grant date | Jun 14, 2022 |
| Priority date | — |
| Expiry date | Jan 23, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2105/0061
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention provides a method producing contact lenses, comprising the step of: separating the mold into the male and female mold halves, with the silicone hydrogel contact lens adhered on one of the male and female mold halves; bring a shaped ultrasonic horn in direct contact with at least one area of a non-optical surface of the female mold half or the male mold half having the molded silicone hydrogel contact lens attached thereon; and applying a ultrasonic vibrational energy to the at least one area of the non-optical surface of the female mold half or the male mold half having the molded silicone hydrogel contact lens attached thereon so as to separate the molded silicone hydrogel contact lens from the mold half attached thereon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.