Method of manufacturing soft contact lens material
US4904708A · kind A · utility
2Cited by
8References
5Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | May 31, 1988 |
| Grant date | Feb 27, 1990 |
| Priority date | — |
| Expiry date | May 31, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/043
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Hydrophilic monomers in a supercooled, transparent state, are polymerized in the presence of water. The polymers have low levels of residual monomers and exhibit good mechanical strength. The process provides materials useful as contact lenses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.