Thermal curing methods and systems for forming contact lenses
US8376735B2 · kind B2 · utility
0Cited by
19References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2012 |
| Grant date | Feb 19, 2013 |
| Priority date | — |
| Expiry date | Apr 20, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2011/0041
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Contact lens curing systems and methods are described. A contact lens curing system includes an oven that has a plurality of curing zones, a mold advancement system for moving contact lens mold assemblies between the plurality of zones, and a controlled atmosphere in the curing zones that provides a substantially chemically inert environment in which contact lens precursor materials can be polymerized in contact mold assemblies located in the curing zones. Methods of producing contact lenses include curing contact lens precursor materials in contact lens mold assemblies in the lens curing system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.