Process for making a soft contact lens of natural proteinaceous polymer(s)
US4650616A · kind A · utility
21Cited by
5References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 17, 1984 |
| Grant date | Mar 17, 1987 |
| Priority date | — |
| Expiry date | Jul 17, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/043
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A starting solution comprising one or more noncrystalline natural proteinaceous polymers of animal or vegetable origin is molded and gelled in a lens shaped mold and then removed from the mold. Thereafter the gel is crosslinked by immersion in a liquid containing a crosslinking agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.