Method for making silicone hydrogel contact lenses
US11433630B2 · kind B2 · utility
0Cited by
14References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2019 |
| Grant date | Sep 6, 2022 |
| Priority date | — |
| Expiry date | May 20, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2105/0061
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention generally relates to a method for producing silicone hydrogel contact lenses having less optical defects or free of optical defects by subjecting the extraction tray for the formed silicone hydrogel contact lenses to a reciprocating lowering and raising motion thereof to obtain the silicone hydrogel contact lenses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.