Fiber collagen contact lens
US4268131A · kind A · utility
44Cited by
5References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 11, 1979 |
| Grant date | May 19, 1981 |
| Priority date | — |
| Expiry date | Apr 11, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Soft contact lenses are made from purified fiber collagen and mixtures of such fiber with purified solubilized collagen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.