Polar thermoplastic ophthalmic lens molds, ophthalmic lenses molded therein, and related methods
US9156214B2 · kind B2 · utility
9Cited by
15References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2011 |
| Grant date | Oct 13, 2015 |
| Priority date | — |
| Expiry date | Oct 30, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D11/00115
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Ophthalmic lens molds made from one or more thermoplastic polymers with average polarities from about 1% to about 7%, ophthalmic lenses including silicone hydrogel contact lenses molded using these less polar thermoplastic polymers, and related methods are described. When the molds are used to cast mold silicone hydrogel contact lenses, the resulting polymerized lens bodies have ophthalmically acceptably wettable surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.