Contact lens
US9869884B2 · kind B2 · utility
0Cited by
6References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 23, 2015 |
| Grant date | Jan 16, 2018 |
| Priority date | — |
| Expiry date | Nov 23, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C2202/16
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A contact lens constructed to limit the water transmissibility of at least one area of the lens while maintaining at least a minimum oxygen transmissibility. The water transmissibility maximum and oxygen permeability minimum are achieved by a predetermined lens thickness of a single lens material or by the use of two or more material layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.