Casting cup assembly for forming an ophthalmic device
US9884435B2 · kind B2 · utility
0Cited by
5References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2013 |
| Grant date | Feb 6, 2018 |
| Priority date | — |
| Expiry date | Mar 6, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Disclosed in this specification is a casting cup assembly comprising frontcurve and basecurve molds which of which includes a ring that circumscribes the respective concave and convex mold surface. When the casting cup is assembled, the rings align and minimize de-centering and tilting of the concave and convex mold surfaces which, in turn, reduces edge defects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.