Method for cast molding contact lenses
US6582631B1 · kind B1 · utility
6Cited by
2References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 9, 2000 |
| Grant date | Jun 24, 2003 |
| Priority date | — |
| Expiry date | Jun 25, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/808
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An improved method of cast molding contact lenses, wherein a lens forming mixture is cured in the lens-shaped cavity formed between molding surfaces of a male and female mold sections, wherein the improvement comprises at least one of sections is injection molded from a metallocene-catalyzed thermoplastic polyolefin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.