Ophthalmic device molds formed from highly amorphous vinyl alcohol polymer, ophthalmic devices molded therein, and related methods
US9664925B2 · kind B2 · utility
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14Claims
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Key dates
| Filing date | Jun 13, 2011 |
| Grant date | May 30, 2017 |
| Priority date | — |
| Expiry date | Jun 7, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2207/109
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Ophthalmic device molds made from at least one highly amorphous vinyl alcohol polymer, ophthalmic devices such as ocular inserts and contact lenses and including silicone hydrogel devices formed using these molds, and related methods are described. The methods of manufacturing ophthalmic devices can use dry or wet demolding processes, or dry or wet delensing processes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.