Contact lens mold
US4209289A · kind A · utility
47Cited by
5References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 14, 1979 |
| Grant date | Jun 24, 1980 |
| Priority date | — |
| Expiry date | May 14, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/808
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A two piece contact lens mold having a pair of blunt, continuous mating surfaces extending around the periphery of the mold cavity is disclosed. Parameters for mold materials and important dimensions are also disclosed. The mold can produce finished contact lenses which do not require further machining.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.