Molds for making ophthalmic devices
US6551531B1 · kind B1 · utility
106Cited by
10References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2000 |
| Grant date | Apr 22, 2003 |
| Priority date | — |
| Expiry date | Mar 22, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/808
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Ophthalmic lens are made by reacting a lens forming mixture in a mold to form a polymer. The polymer is then demolded from the mold and processed into a completed lens. The molds are made of at least two parts, a first part having a surface for forming the polymer into a portion of the lens and a second part having a surface for forming the polymer into a portion of the lens. The first and second parts of the mold each have different surface energies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.