Colored contact lenses and method of making same
US6743438B2 · kind B2 · utility
7Cited by
5References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 9, 2001 |
| Grant date | Jun 1, 2004 |
| Priority date | — |
| Expiry date | Aug 12, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2985
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Optical lenses and methods of preparing the same, in which an active material encapsulated in resin capsules is impregnated in said lens, adjacent an optical surface thereof. The active material may be a coloring material for producing a printed color pattern in the iris or other areas of the lens, or it may be a therapeutic agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.