Contact lens
US4561737A · kind A · utility
7Cited by
1References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 8, 1982 |
| Grant date | Dec 31, 1985 |
| Priority date | — |
| Expiry date | Apr 8, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A contact lens has a rear surface, a front surface and a peripheral edge surface extending between the front and rear surfaces. The peripheral edge surface extends generally forwardly and obliquely from the rear surface to the front surface. The invention is more particularly, but not exclusively, applicable to flexible contact lenses, such as contact lenses manufactured of silicone and similar materials, for example.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.