Ophthalmic device molds formed from vinyl alcohol copolymer, ophthalmic devices molded therein, and related methods
US9616626B2 · kind B2 · utility
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15References
13Claims
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Key dates
| Filing date | Jun 13, 2011 |
| Grant date | Apr 11, 2017 |
| Priority date | — |
| Expiry date | Dec 10, 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 vinyl alcohol copolymer and having a static sessile drop contact angle of less than 70 degrees, 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.