Oxygen permeable hard contact lens
US4508884A · kind A · utility
34Cited by
12References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 25, 1983 |
| Grant date | Apr 2, 1985 |
| Priority date | — |
| Expiry date | May 25, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/043
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Oxygen permeable hard contact lenses from the copolymerization of ethylenically unsaturated silicone ester; sterically hindered or bulky aliphatic ester of ethylenically unsaturated carboxylic acid, and hydrophilic monomer; and method for the polymerization thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.