Method of making plastic molds for molding contact lenses
US5456864A · kind A · utility
29Cited by
23References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 24, 1994 |
| Grant date | Oct 10, 1995 |
| Priority date | — |
| Expiry date | Jan 24, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/808
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An improved method for forming plastic molds for casting articles having an optical surface such as contact lenses employs a plastic tool having an optically smooth surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.