Mold halves and molding assembly for making contact lenses
US5540410A · kind A · utility
69Cited by
5References
30Claims
0Family size
Inventors
Key dates
| Filing date | Jun 10, 1994 |
| Grant date | Jul 30, 1996 |
| Priority date | — |
| Expiry date | Jun 10, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/808
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Disclosed are mold halves useful in molding a contact lens by polymerization of a polymerizable composition disposed between the mold halves. The mold halves are of rigid thermoplastic, preferably polystyrene, transparent to ultraviolet light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.