Vinyl alcohol ophthalmic lens molds, ophthalmic lenses molded therein, and related methods
US9676153B2 · kind B2 · utility
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15References
17Claims
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Key dates
| Filing date | Jun 13, 2011 |
| Grant date | Jun 13, 2017 |
| Priority date | — |
| Expiry date | Jul 3, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2207/109
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Ophthalmic lens molds made from at least one vinyl alcohol copolymers with high amorphous content, ophthalmic lenses including silicone hydrogel contact lenses formed using these molds, packaged ophthalmic lenses present in a solution comprising the at least one vinyl alcohol copolymer with high amorphous content, and related methods are described. The methods of manufacturing ophthalmic lenses can use wet demolding, delensing or demolding and delensing processes involving dissolving the molds in water or an aqueous solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.