Ophthalmic lens molds, ophthalmic lenses molded therein, and related methods
US9193118B2 · kind B2 · utility
4Cited by
15References
19Claims
0Family size
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Key dates
| Filing date | Jul 29, 2011 |
| Grant date | Nov 24, 2015 |
| Priority date | — |
| Expiry date | Nov 24, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/043
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Methods of manufacturing contact lenses using ophthalmic lens molds having a molding surface comprising a thermoplastic polymer, the molding surface having a percent polarity from 3% to 20% and a surface energy from about 25 mN/m to about 40 mN/m to cast mold a polymerizable composition having a surface tension from about 20 mN/m to about 25 mN/m, wherein a surface energy differential of the surface tension of the polymerizable composition less the surface energy of the molding surface less than or equal to zero (0); and silicone hydrogel contact lens bodies so manufactured are described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.